FSc Notes Chemistry 12th

FSc Notes Chemistry 12th

2nd year Chemistry Notes, Short Questions, Numericals, Multiple Choice Questions (MCQs), Long Questions

Chapter Name Ex MCQs & Extra MCQs Ex Questions & Extra SQs
Ch 1 Periodic Classification of Elements and Periodicity MCQs Ex Questions
Ch 2 S-Block Elements MCQs Ex Questions
Ch 3 Group IIIA and Group IVA Elements MCQs Ex Questions
Ch 4 Group VA and Group VIA Elements MCQs Ex Questions
Ch 5 The Halogens and The Noble Gases MCQs Ex Questions
Ch 6 Transition Elements MCQs Ex Questions
Ch 7 Fundamental Principles of Organic Chemistry MCQs Ex Questions
Ch 8 Aliphatic Hydrocarbons MCQs Ex Questions
Ch 9 Aromatic Hydrocarbons MCQs Ex Questions
Ch 10 Alkyl Halides MCQs Ex Questions
Ch 11 Alcohols, Phenols and Ethers MCQs Ex Questions
Ch 12 Aldehydes and Ketones MCQs Ex Questions
Ch 13 Carboxylic Acids MCQs Ex Questions
Ch 14 Macromolecules MCQs Ex Questions
Ch 15 Common Chemical Industries in Pakistan MCQs Ex Questions
Ch 16 Environmental Chemistry MCQs Ex Questions

All MCQs of Chemistry 12th are given below. If you want to review questions you can do so by clicking the above links.

Category: Chemistry 12th Ex

Chemistry 12th Ch 1-16  Ex

Chemistry 12th Ch 1 Periodic Classification of Elements and Periodicity Ex MCQs

TCA Notes Chemistry 12th Ch 1 Periodic Classification of Elements and Periodicity Ex MCQs

You can prepare these MCQs below before attempting.

1 / 21

Keeping in view the size of atoms, which orders is the correct one:

2 / 21

Mark the correct statements:

3 / 21

Mark the correct statements:

4 / 21

Mark the correct statements:

5 / 21

Which statement is Incorrect:

6 / 21

Which statement is correct:

7 / 21

Mark the correct statement:

8 / 21

Mark the correct statement:

9 / 21

Mark the correct statement:

10 / 21

Mark the correct statement:

11 / 21

Mark the correct statement:

12 / 21

In Mendeleev's periodic table elements Be, Mg, Zn and Cd are placed in the same group.

13 / 21

The second and third periods contain eighteen elements each.

14 / 21

Alkaline earth metals are present in Group IIA.

15 / 21

Metals are present in the top right corner of the periodic table.

16 / 21

Metalloids are present in the lower half of Groups IVA, VA and VIA.

17 / 21

Hydrogen forms uni-negative ion like halogens.

18 / 21

Oxidation state of an element is related to the number of period it belongs.

19 / 21

Diamond is a good conductor of electricity.

20 / 21

Melting points of halogens decrease down the group.

21 / 21

Zinc oxide is an example of amphoteric oxide.

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Chemistry 12th Ch 2 S-Block Elements Ex MCQs

TCA Notes Chemistry 12th Ch 2 S-Block Elements Ex MCQs

You can prepare these MCQs below before attempting.

1 / 20

Which one of the following does not belong to alkaline-earth metals:

2 / 20

The oxides of beryllium are:

3 / 20

Which ion will have the maximum value of heat of hydration:

  1. Na+
  2. Cs2+
  3. Ba2+
  4. Mg2+

4 / 20

Which one of the following is not an alkali metals:

5 / 20

Which of the following sulphates is not soluble in water:

6 / 20

The element cesium bears resemblance with:

7 / 20

Saltpetre has the chemical formula:

  1. KNO3
  2. KNO2
  3. Na2B4O7
  4. Na2CO3.H2O

8 / 20

The mineral CaSO4.2H2O has the general name:

9 / 20

Down's cell is used to prepare:

10 / 20

Which element is deposited at the cathode during the electrolysis of brine diaphragm cell:

  1. H2
  2. Na
  3. Cl2
  4. O2

11 / 20

Group IA elements are called alkali metals because their chlorides are alkaline in nature.

12 / 20

Alkali metals are very good conductor of electricity.

13 / 20

The hydroxides of alkali metals and alkaline-earth metals are soluble in water.

14 / 20

Plaster of Paris is a hemihydrate.

15 / 20

Alkali metals have low melting and boiling points as compared to those of alkaline-earth metals.

16 / 20

Lithium carbonate is decomposed to its oxide, but the carbonates of the other alkali metals are stable towards heat.

17 / 20

All alkali metal sulphates are insoluble in water.

18 / 20

Lithium combines with nitrogen to form lithium nitride but other alkali metals do not react with nitrogen.

19 / 20

Trona is a mineral of lithium.

20 / 20

Alkaline-earth metals are stronger reducing agents than alkali metals.

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Chemistry 12th Ch 3 Group IIIA and Group IVA Elements Ex MCQs

TCA Notes Chemistry 12th Ch 3 Group IIIA and Group IVA Elements Ex MCQs

You can prepare these MCQs below before attempting.

1 / 20

Which metal is used in the thermit process because of its activity:

2 / 20

Aluminum oxide is:

3 / 20

Chemical composition of colemanite is:

  1. Ca2B6O11.5H2O
  2. CaB4O7. 4H2O
  3. Na2B4O7.4H2O
  4. CaNaB5O9.8H2O

4 / 20

Which element forms ion with charge +3:

5 / 20

Which electronic configuration corresponds to an element of group IIIA of the periodic table:

  1. 1s2, 2s2, 2p6, 3s2, 3p1 1s2
  2. 1s2, 2s2, 2p6, 3s2, 3p6 3s2
  3. 1s2, 2s2, 2p6
  4. 1s2, 2s2, 2p6, 3s2, 3p3 

6 / 20

Which element among the following belongs to group IVA of the periodic table:

7 / 20

Boric acid cannot be used:

8 / 20

Which of the following elements is not present abundantly in earth's crust:

9 / 20

Tincal is a mineral of:

10 / 20

The chief ore of aluminum is:

  1. Na3AIF6
  2. Al2O3.2H2O
  3. Al2O3
  4. Al2O3.H2O

11 / 20

Boron always uses all the three of its valence electrons for bonding purposes.

12 / 20

Diaspore is an ore of carbon.

13 / 20

Emerald is an ore of aluminum that has the chemical formula Al2O3.2SiO2. 2H2O.

14 / 20

An aqueous solution of borax is feebly acidic in nature.

15 / 20

In case of borax bead test of cupric oxide, the beads are colored blue in the reducing flame.

16 / 20

Boric acid can be titrated with sodium hydroxide.

17 / 20

Carbon and silicon are the only non-metals in group IVA.

18 / 20

PbO is commonly known as litharge.

19 / 20

Basic lead carbonate is a reddish brown pigment.

20 / 20

Aluminum oxide (AI2O3) is also called bauxite.

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Chemistry 12th Ch 4 Group VA and Group VIA Elements Ex MCQs

TCA Notes Chemistry 12th Ch 4 Group VA and Group VIA Elements Ex MCQs

You can prepare these MCQs below before attempting.

1 / 19

Out of all the elements of group VA, the highest ionization energy is possessed by:

2 / 19

Among group VA elements, the most electronegative element is:

3 / 19

Oxidation of NO in air produces:

  1. N2O
  2. N2O3
  3. N2O4
  4. N2O5

4 / 19

The brown gas formed, when metal reduces HNO3 to:

  1. N2O5
  2. N2O3
  3. NO2
  4. NO

5 / 19

Laughing gas is chemically:

  1. NO
  2. N2O
  3. NO2
  4. N2O4

6 / 19

Out of all the elements of group VIA, the highest melting and boiling points is shown by the element:

7 / 19

SO2 is not absorbed in water directly to form H2SO4 because:

  1. The reaction does not go to completion
  2. The reaction is quite slow
  3. The reaction is highly exothermic
  4. SO3 is insoluble in water

8 / 19

Which catalyst is used in contact process:

  1. Fe2O3
  2. V2O5
  3. SO3
  4. Ag2O

9 / 19

Which of the following specie has the maximum number of unpaired electrons:

  1. O2
  2. O2+1
  3. O2-2
  4. O2+2

10 / 19

The metallic character in group VA and VIA elements increases down the group.

11 / 19

The elements of group VA exhibit maximum oxidation state of +5.

12 / 19

lionization energy of phosphorus is greater than that of nitrogen.

13 / 19

The electronegativity of oxygen is greater than all other elements of group und VIA.

14 / 19

V2O5 is used as a catalyst for the oxidation of SO2 to SO3.

15 / 19

The oxides of nitrogen arc basic in nature.

16 / 19

Aqua regia is prepared by mixing 3 parts of conc. HNO3 with one part of co HCl.

17 / 19

TNT is prepared by the reaction of nitric acid with toluene.

18 / 19

P2O3 when reacts with cold water gives phosphorus acid and with hot water gives phosphoric acid.

19 / 19

Sulphur occurs in many organic compounds of animal and vegetable origins.

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Chemistry 12th Ch 5 The Halogens and The Noble Gases Ex MCQs

TCA Notes Chemistry 12th Ch 5 The Halogens and The Noble Gases Ex MCQs

You can prepare these MCQs below before attempting.

1 / 20

Which of the following hydrogen halide is the weakest acid in solution:

2 / 20

Chlorine heptaoxide (Cl2O7) reacts with water to form:

3 / 20

Hydrogen bond is the strongest between the molecules of:

4 / 20

Which halogen will react spontaneously with Au(s) to produce Au3+:

  1. Br
  2. F2
  3. I2
  4. Cl2

5 / 20

The anhydride of HCIO4 is:

  1. CIO3
  2. CIO2
  3. Cl2O5
  4. Cl2O7

6 / 20

Bleaching powder may be produced by passing chlorine over:

7 / 20

Which is the strongest acid:

  1. HCIO
  2. HCIO2
  3. HCIO3
  4. HCIO4

8 / 20

Which halogen occurs naturally in a positive oxidation state:

9 / 20

An element that has a high ionization energy and tends to be chemically inactive would most likely to be:

10 / 20

Which of the following represents the correct electronic configuration of the outermost energy level of an element of zero (VIIIA) group in the ground state:

  1. s2p2
  2. s2p4
  3. s2p5
  4. s2p6

11 / 20

HF is used for etching glass.

12 / 20

HI is weaker reducing agent as compared to HF.

13 / 20

Bleaching powder is completely soluble in water.

14 / 20

The formula of perchloric acid is HClO3.

15 / 20

On warming, aqueous KOCl disproportionate as follows. 3KOCI → 2KCI + KCIO3.

16 / 20

α-particles emitted by radioactive elements are ions of radon.

17 / 20

Radon is the only one of the noble gases that is radioactive.

18 / 20

The molecules of the noble gases are all monoatomic.

19 / 20

Argon is used to fill electric bulbs.

20 / 20

The noble gas which is present in the largest amount in atmosphere is krypton.

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Chemistry 12th Ch 6 Transition Elements Ex MCQs

TCA Notes Chemistry 12th Ch 6 Transition Elements Ex MCQs

You can prepare these MCQs below before attempting.

1 / 20

Which of the following is a non-typical transition element:

2 / 20

Which of the following is a typical transition metal:

3 / 20

f-Block elements are also called:

4 / 20

The strength of binding energy of transition elements depends upon:

5 / 20

Group VIB of transition elements contains:

6 / 20

Which is the formula of tetraammine chloro-nitro-platinum (IV) sulphate:

  1. [PtCl(NH3)(NO2)4]SO4
  2. [PtNO2ClNH3)4]SO4
  3. [PtCl(NO2)(NH3)4]SO4
  4. [Pt(NH3)4(NO2)Cl]SO4

7 / 20

The percentage of carbon in different types of iron products is in the order of:

8 / 20

The colour of transition metal complexes is due to:

9 / 20

Coordination number of Pt in [PtCl(NO2)(NH3)4]2 is:

10 / 20

The total number of transition element is:

11 / 20

A substance which is attracted into a magnetic field is said to be diamagnetic.

12 / 20

Compounds of the transition elements are mostly coloured.

13 / 20

Fe3+ ions are blue when hydrated.

14 / 20

An extreme case of paramagnetism is called diamagnetism.

15 / 20

Tin plating is used to protect iron sheets from corrosion.

16 / 20

In galvanizing, zinc prevents corrosion of iron.

17 / 20

Tin plated iron gets rusted more rapidly when the protective coating is damaged than the unplated iron.

18 / 20

The name of anionic ligands in a complex ends in suffix 'O'.

19 / 20

Pig iron contains greater percentage of carbon than steel.

20 / 20

Complex compounds having dsp2 hybridization have tetrahedral geometry.

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Chemistry 12th Ch 7 Fundamental Principles of Organic Chemistry Ex MCQs

TCA Notes Chemistry 12th Ch 7 Fundamental Principles of Organic Chemistry Ex MCQs

You can prepare these MCQs below before attempting.

1 / 18

The state of hybridization of carbon atom in methane is:

  1. sp3
  2. sp2
  3. sp
  4. dsp2

2 / 18

In t-butyl alcohol, the tertiary carbon is bonded to:

3 / 18

Which set of hybrid orbitals has planar triangular shape:

  1. sp3
  2. sp
  3. sp2
  4. dsp2

4 / 18

The chemist who synthesized urea from ammonium cyanate was:

5 / 18

Linear shape is associated with which set of hybrid orbitals:

  1. sp
  2. sp2
  3. sp2
  4. dsp2

6 / 18

A double bond consists of:

7 / 18

Ethers show the phenomenon of:

8 / 18

Select from the following the one which is alcohol:

  1. CH3-CH2-OH
  2. CH3-O-CH3
  3. CH3COOH
  4. CH3-CH2-Br

9 / 18

There are three possıble isomers for pentane.

10 / 18

Alkynes do not show the phenomenon of cis-trans isomerism.

11 / 18

Organic compounds cannot be synthesized from inorganic compounds.

12 / 18

All close chain compounds are aromatic in nature.

13 / 18

The functional group present in amides is called an amino group.

14 / 18

Government of Pakistan is trying to use coal for power generation.

15 / 18

Crude petroleum is subjected to fractional sublimation in order to separate it into different fractions.

16 / 18

A bond between carbon and hydrogen serves as a functional group for alkanes.

17 / 18

o-nitrotoluene and p-nitrotoluene are the examples of functional group isomerism.

18 / 18

Almost all the chemical reactions taking place in our body are inorganic in nature.

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Chemistry 12th Ch 8 Aliphatic Hydrocarbons Ex MCQs

TCA Notes Chemistry 12th Ch 8 Aliphatic Hydrocarbons Ex MCQs

You can prepare these MCQs below before attempting.

1 / 19

Preparation of vegetable ghee involves:

2 / 19

Formula of chloroform is:

  1. CH3Cl
  2. CCl4
  3. CH2Cl2
  4. CHCl3

3 / 19

The presence of a double bond in a compound is the sign of:

4 / 19

Vinyl acetylene combines with HCl to form:

5 / 19

The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with the rule:

6 / 19

Synthetic rubber is made by polymerization of:

7 / 19

β-β'-dichloroethyl sulphide is commonly known as:

8 / 19

When methane reacts with Cl2 in the presence of diffused light the products obtained:

9 / 19

Which one of the following gases is used for artificial ripening of fruits:

10 / 19

Addition of HX to unsymmetrical alkanes takes place according to Markownikov's rule.

11 / 19

Methane reacts with bromine water and its colour is discharged.

12 / 19

Mustard gas is a blistering agent.

13 / 19

Methane is also called marsh gas.

14 / 19

Ethyne is a saturated compound.

15 / 19

Bayer's reagent is used to locate a double bond in an alkene.

16 / 19

Alkanes usually undergo substitution reactions.

17 / 19

Benzene is a polymer of ethene.

18 / 19

Acrylonitrile can be obtained from ethyne.

19 / 19

Ethyne is more reactive towards electrophilic reagents than ethene.

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Chemistry 12th Ch 9 Aromatic Hydrocarbons Ex MCQs

TCA Notes Chemistry 12th Ch 9 Aromatic Hydrocarbons Ex MCQs

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1 / 20

The benzene molecule contains:

2 / 20

Aromatic hydrocarbons are the derivatives of:

3 / 20

Which of the following acid can be used as a catalyst in Friedel-Crafts reactions:

  1. AlCl3
  2. HNO3
  3. BeCl2
  4. NaCl

4 / 20

Benzene cannot undergo:

5 / 20

Amongst the following the compounds that can be most readily sulphonated is:

6 / 20

During nitration of benzene, the active nitrating agent is:

  1. NO3
  2. NO2+
  3. NO2
  4. HNO3

7 / 20

Which compound is the most reactive one:

8 / 20

The electrophile in aromatic sulphonation is:

  1. H2SO4
  2. HSO4
  3. SO3
  4. SO3+

9 / 20

Aromatic compounds burn with sooty flame because:

10 / 20

The conversion of n-hexane into benzene by heating in the presence of Pt is called:

11 / 20

Benzene is more reactive than alkene and less reactive than alkane.

12 / 20

Benzene has a pentagonal structure.

13 / 20

The C-C bond length in benzene molecule is 1.397 $\mathring{A}$.

14 / 20

The state of hybridization of carbon in benzene molecule is sp3.

15 / 20

There are six sigma bonds in benzene molecule.

16 / 20

Halogenonium ion produced in electrophilic substitution reactions is a powerful electrophile.

17 / 20

In electrophile substitution reactions, addition products are favorable.

18 / 20

Sulphonation is carried out when benzene is heated with conc. HNO3.

19 / 20

In ozonolysis benzene directly gives glyoxal.

20 / 20

Benzene has five resonance contributing structures.

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Chemistry 12th Ch 10 Alkyl Halides Ex MCQs

TCA Notes Chemistry 12th Ch 10 Alkyl Halides Ex MCQs

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1 / 20

In primary alkyl halides, the halogen atom is attached to a carbon which is further attached to how many carbon atoms:

2 / 20

The reactivity order of alkyl halides for a particular alkyl group is:

3 / 20

When CO2 is made to react with ethyl magnesium lodide, followed by acid hydrolysis, the product formed is:

4 / 20

Grignard reagent is reactive due to:

5 / 20

SN2 reactions can be best carried out with:

6 / 20

Elimination biomolecular reactions involve:

7 / 20

For which mechanisms, the first step involved is the same:

  1. E1 and E2
  2. E2and SN2
  3. SN1 and SN2
  4. E1 and SN1

8 / 20

Alkyl halides are considered to be very reactive compounds towards nucleophiles, because:

9 / 20

The rate of E1 reaction depends upon:

10 / 20

Which one of the following is not a nucleophile:

  1. H2O
  2. H2S
  3. BF3
  4. NH3

11 / 20

In secondary alkyl halides, the halogen atom is attached to a carbon which is further attached to two carbon atoms directly.

12 / 20

Alcohols react with thionyl chloride in ether as solvent to give alkyl halides.

13 / 20

Order of reactivity of alkyl halides for a particular alkyl group is: Iodide > Bromide > Chloride > Fluoride.

14 / 20

In SN2 reactions the attacking nucleophile always attacks from the side in which the leaving group is attached.

15 / 20

Methylmagnesium iodide on hydrolysis yields ethyl alcohol.

16 / 20

Primary, secondary and tertiary amines react with Grignard reagents in the same way.

17 / 20

The reactions of secondary alkyl halides may follow both SN1 and SN2 mechanisms.

18 / 20

SN1 mechanism is a one stage process involving a simultaneous bond breakage and bond formation.

19 / 20

In β-elimination reactions, the two atoms or groups attached to two adjacent carbon atoms are lost under the influence of an electrophile.

20 / 20

The reactivity order of alkyl halides is determined by the strength of carbon-halogen bond.

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Chemistry 12th Ch 11 Alcohols, Phenols and Ethers Ex MCQs

TCA Notes Chemistry 12th Ch 11 Alcohols, Phenols and Ethers Ex MCQs

You can prepare these MCQs below before attempting.

1 / 20

Which compound shows hydrogen bonding:

  1. C2H6
  2. C2H5Cl
  3. CH3-O-CH2
  4. C2H5OH

2 / 20

Which compound shows maximum hydrogen bonding with water.

  1. CH3OH
  2. C2H5OH
  3. CH3-O-CH3
  4. C6H5OH

3 / 20

Which compound is more soluble in water:

  1. C2H5OH
  2. C6H5OH
  3. CH3COCH3
  4. n-Hexanol

4 / 20

Which compound will have the maximum repulsion with H2O:

  1. C6H6
  2. CH2H5
  3. CH3CH2CH2OH
  4. CH2-O-CH2

5 / 20

Ethanol can be converted into ethanoic acid by:

6 / 20

Which enzyme is not involved in fermentation:

7 / 20

Which compound is called a universal solvent:

  1. H2O
  2. CH3OH
  3. C2H5OH
  4. CH3-O-CH3

8 / 20

Methyl alcohol is not used:

9 / 20

Rectified spirit contains alcohol about:

10 / 20

According to Lewis concept ethers behave as:

11 / 20

Methylated spirit contains 95% methyl alcohol and 5% ethyl alcohol.

12 / 20

Ethyl alcohol is a very g00d anti-freezing agent.

13 / 20

Methanol is also called wood spirit.

14 / 20

Only 14% ethyl alcohol can be prepared by fermentation.

15 / 20

Ethers do not show hydrogen bonding.

16 / 20

Alcohols are more acidic than phenols.

17 / 20

Phenol is more soluble in water than lower alcohols.

18 / 20

Alcohols are more basic than ethers.

19 / 20

Ethers have higher boiling points than alcohols and phenols.

20 / 20

Methanol and ethanol can be distinguished by iodoform test.

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Chemistry 12th Ch 12 Aldehydes and Ketones Ex MCQs

TCA Notes Chemistry 12th Ch 12 Aldehydes and Ketones Ex MCQs

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1 / 18

The carbon atom of a carbonyl group is:

  1. sp hybridized
  2. sp2 hybridized
  3. sp3 hybridized
  4. None of these

2 / 18

Formalin is:

3 / 18

Which of the following will have the highest boiling point:

4 / 18

Ketones are prepared by the oxidation of:

5 / 18

Acetone reacts with HCN to form a cyanohydrin. It is an example oft

6 / 18

Which of the following compounds will not give iodoform test on treatment with l2/NaOH:

7 / 18

Which of the following compounds will react with Tollen's reagent:

  1. CH3CHO
  2. (CH3)2CO
  3. CH3COOH
  4. (CH3)2CH2CO

8 / 18

Cannizzaro's reaction is not given by:

9 / 18

Which of the following reagents will react with both aldehydes and ketone

10 / 18

Formaldehyde is used in the silvering of mirrors.

11 / 18

Ketones combine with alcohols in the presence of HCl gas to form acetals.

12 / 18

Acetaldehyde undergoes Cannizzaro's reaction.

13 / 18

Aldol condensation reaction is given by only those aldehydes and ketones which contain an α-hydrogen atom.

14 / 18

Cannizzaro's reaction is given by only those aldehydes containing no α-hydrogen atom.

15 / 18

Propanol and propanone behave differently with Tollen's reagent.

16 / 18

Acetone reacts with sodium bisulphite to give a yellow crystalline product.

17 / 18

Acetone on reduction gives a primary alcohol.

18 / 18

40% aqueous solution of formaldehyde is called formalin.

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Chemistry 12th Ch 13 Carboxylic Acids Ex MCQs

TCA Notes Chemistry 12th Ch 13 Carboxylic Acids Ex MCQs

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1 / 20

Acetic acid is manufactured by:

2 / 20

A carboxylic acid contains:

3 / 20

Which acid is used in the manufacture of synthetic fibre:

4 / 20

Which of the following derivative cannot be prepared directly from acetic acid:

5 / 20

Which reagent is used to reduce a carboxylic group to an alcohol:

  1. H2/Ni
  2. H2/Pt
  3. NaBH4
  4. LiAIH4

6 / 20

The solution of which acid is used for seasoning of food:

7 / 20

Organic compounds X and Y react together to form organic compound Z. What type of compounds can X, Y and Z be:

XYZ
(a)alcoholesteracid
(b)acidesteralcohol
(c)esteralcoholacid
(d)alcoholacidester

8 / 20

An aqueous solution of an organic compound reacts with sodium carbonate to produce carbon dioxide gas. Which one of the following could be the organic compound:

  1. CH2 = CH - CH3
  2. CH3 - CHO
  3. CH3COOC2H5
  4. CH3 - CH2 - COOH

9 / 20

Which of the following is not a fatty acid:

10 / 20

Acetamide is prepared by:

11 / 20

Acetic acid exists as a dimer in benzene.

12 / 20

First three aliphatic acids have fruity smells.

13 / 20

Carboxylic acids on reduction with LiAlH4 produce alkenes.

14 / 20

Acetic acid on dehydration produces CO and H2.

15 / 20

Sodium formate on heating with soda lime produces NaHCO3 and hydrogen.

16 / 20

Amino acids exist as Zwitter ion.

17 / 20

Histidine is an acidic amino acid.

18 / 20

A peptide having molecular mass upto 10000 is called protein.

19 / 20

Phthalic acid is a monocarboxylic acid.

20 / 20

Formula of glycine is CH2COOH.

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Chemistry 12th Ch 14 Macromolecules Ex MCQs

TCA Notes Chemistry 12th Ch 14 Macromolecules Ex MCQs

You can prepare these MCQs below before attempting the Quiz.

1 / 22

In which of these processes are small organic molecules made into macromolecules:

2 / 22

Which of these polymers is an addition polymer:

3 / 22

Which of these polymers is a synthetic polymer:

4 / 22

Plastics are a pollution problem because many plastics:

5 / 22

The fibre which is made from acrylonitrile as monomer:

6 / 22

A polymeric substance that is formed in the liquid state and then hardened to a rigid solids is called a:

7 / 22

Vegetable oils are:

8 / 22

Which one of the following elements is not present in all proteins:

9 / 22

Which one of the following is a water soluble vitamin:

10 / 22

Which one of the following enzymes brings about the hydrolysis of fats:

11 / 22

The reaction between fat and NaOH is called:

12 / 22

Which one of the following statements about glucose and sucrose is incorrect

13 / 22

Nylon 6, 6 and terylene are condensation polymers.

14 / 22

The disposal of plastics does not cause any pollution problem.

15 / 22

Fructose is a polysaccharide carbohydrate.

16 / 22

Human beings get no food nutrient from cellulose.

17 / 22

The most abundant and the most important steroid in the human body is vitamin D.

18 / 22

Enzymes are the compounds containing C, H and O only.

19 / 22

The degree of unsaturation of fats is measured by their iodine number.

20 / 22

Activity of an enzyme varies with temperature and pH.

21 / 22

Nucleic acids are biological catalysts.

22 / 22

The nucleic acids are responsible for protein synthesis in the human body.

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Chemistry 12th Ch 15 Common Chemical Industries in Pakistan Ex MCQs

TCA Notes Chemistry 12th Ch 15 Common Chemical Industries in Pakistan Ex MCQs

You can prepare these MCQs below before attempting the Quiz.

1 / 20

Which three elements are needed for the healthy growth of plants:

2 / 20

Which woody raw material is used for the manufacture of paper pulp:

3 / 20

The nitrogen present in some fertilizers helps plants:

4 / 20

Phosphorus helps the growth of:

5 / 20

Micro-nutrients are required in quantity ranging from:

6 / 20

During the manufacturing process of cement the temperature of the decomposition zone goes upto:

7 / 20

The word paper is derived from the name of which reedy plant:

8 / 20

Which is not a calcarious material:

9 / 20

How many zones through which the charge passes in a rotary kiln:

10 / 20

Ammonium nitrate fertilizer is not used for which crop:

11 / 20

Potassium fertilizers are especially used for tobacco and corn.

12 / 20

Ammonia is used in gaseous state while all other fertilizers are used in the solid form.

13 / 20

In wet process for the manufacture of cement, grinding of raw material is done in the presence of water.

14 / 20

The total production of cement in Pakistan is 56,30, 100 metric tons / annum.

15 / 20

In neutral sulphite semi-chemical process, sodium sulphite is used, buffered with sodium carbonate.

16 / 20

Lignin is an inorganic binder.

17 / 20

Paper consumption in Pakistan is around 5 kg per person per year.

18 / 20

Urea contains 90% nitrogen.

19 / 20

The temperature of the digester in paper industry should be around 160-180oC.

20 / 20

Potassium fertilizers increase the capability of plants to resist diseases.

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Chemistry 12th Ch 16 Environmental Chemistry Ex MCQs

TCA Notes Chemistry 12th Ch 16 Environmental Chemistry Ex MCQs

You can prepare these MCQs below before attempting the Quiz.

1 / 20

The pH range of the truly acidic rain is:

2 / 20

Peroxyacetylinitrate (PAN) is an irritant to human beings and it affects:

3 / 20

To avoid the formation of toxic compounds with chlorine which substance is used for disinfecting water:

  1. KMnO4
  2. O3
  3. Alums
  4. Chloramines

4 / 20

A single chloride free radical can destroy how many ozone molecules:

5 / 20

Fungicides are the pesticides which:

6 / 20

Ecosystem is a smaller unit of:

7 / 20

The main pollutant of leather tanneries in the waste water is due the salt of:

8 / 20

In purification of potable water the coagulant used is:

9 / 20

The temperature in the non-rotating chamber in the incineration of industrial and hazardous waste process has a range:

10 / 20

Newspaper can be recycled again and again by how many times:

11 / 20

Half of the mass of the atmosphere is concentrated in lower 10 km.

12 / 20

The oceans cover approximately 71 percent of the earth.

13 / 20

The volcanoes produce 55% of SO2.

14 / 20

The reducing smog is due to the presence of nitric oxide.

15 / 20

Ozone is produced in the polar regions by the photochemical reaction of oxygen.

16 / 20

The temperature in the troposphere decreases with the increasing altitude from 15 to -56°C.

17 / 20

Incineration is a waste treatment process in which solid waste is dumped in a land fill.

18 / 20

Acid rain is due to the presence of oxides of sulphur and nitrogen which get mixed with the rain water.

19 / 20

The heavy metals have a safe limit where they are not toxic.

20 / 20

The reprocessing of the plastics is to convert back to their components by a chemical or thermal process so that these can be used again.

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Category: Chemistry 12th Additional

Chemistry 12th Ch 1-16 Additional

Chemistry 12th Ch 1 Periodic Classification of Elements and Periodicity Additional MCQs

TCA Notes Chemistry 12th Ch 1 Periodic Classification of Elements and Periodicity Additional MCQs

You can prepare these MCQs below before attempting.

1 / 18

Periodic table has been divided into four blocks, which blocks contain highest elements:

2 / 18

The element with atomic number 9 is closest in chemical properties with element of atomic-number:

3 / 18

The element with highest first ionization energy is:

4 / 18

Which element of the following shows maximum oxidation state:

5 / 18

Melting point is highest for the elements of group:

6 / 18

Amphoteric oxide is formed by:

7 / 18

Which one of the following is not ionic hydride:

8 / 18

The elements with lowest Melting Point:

9 / 18

Period six in periodic table contain which "block" elements:

10 / 18

Who introduced the zero group:

11 / 18

Elements of group II-B are called:

12 / 18

The division of elements into blocks in the modern periodic table is based on:

13 / 18

Which of the following sets of atoms are arranged in order of decreasing electronegativity?

14 / 18

In the long form of the periodic table, the most electropositive elements occupy:

15 / 18

When hydrogen loses its electron to form H+ ion then it resemble:

16 / 18

Which of the halides show bridge type structure:

  1. NaCI
  2. AlCl3
  3. CCl4
  4. H2O

17 / 18

Mosley concluded by the X-ray studies of the elements that physical and chemical properties of elements depend upon:

18 / 18

7th period of the periodic table contains normal elements:

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Chemistry 12th Ch 2 S-Block Elements Additional MCQs

TCA Notes Chemistry 12th Ch 2 S-Block Elements Additional MCQs

You can prepare these MCQs below before attempting.

1 / 17

Which of the following is not a function of sulphur:

2 / 17

Which is produced at the cathode during the electrolysis of brine in Nelson's cell:

  1. H2
  2. Na
  3. Cl2
  4. O2

3 / 17

Which of the following elements can produce H2 gas when treated with sodium hydroxide:

4 / 17

Halite is chemical name of:

  1. KCl
  2. NaCl
  3. MgCl2
  4. SrCl2

5 / 17

Down's cell is used to prepare:

  1. Na2CO3
  2. NaHCO3
  3. Na
  4. NaOH

6 / 17

Which ion will have the maximum value of heat of hydration:

  1. Na+
  2. Cs+
  3. Ba+2
  4. Mg+2

7 / 17

Sodium metal cannot be stored in:

8 / 17

Dolomite is a carbonate of:

9 / 17

Which one of the following configurations corresponds to an alkaline earth metals:

  1. [Ar] 3d10 4s2
  2. [Ne] 3d2 3p2
  3. [Ar] 4s2
  4. [Ar] 3d104s1

10 / 17

Dead burnt gypsum is:

  1. CaSO4. 2H2O
  2. CaSO4.1/2 H2O
  3. CaSO2
  4. MgSO4.7H2O

11 / 17

The operating temp of Down's cell is:

12 / 17

CaMg3(SiO3)4 is the composition of:

13 / 17

When some water is added to plaster of Paris, it becomes hard and expansion in volume how much:

14 / 17

Which of the following compound is formed when Na burn in excess of air:

  1. NaO2
  2. Na2O2
  3. Na2O
  4. Na2O3

15 / 17

Beryllium metal is as hard as:

16 / 17

One of the following alkali metals is the most reactive which is that:

17 / 17

Chemical formula of slaked lime is:

  1. CaCO3
  2. Ca(OH)2. H2O
  3. Ca(OH)2
  4. CaSO4

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Chemistry 12th Ch 3 Group IIIA and Group IVA Elements Additional MCQs

TCA Notes Chemistry 12th Ch 3 Group IIIA and Group IVA Elements Additional MCQs

You can prepare these MCQs below before attempting.

1 / 10

Which of the following radicals give blue colour (in cold and hot state) in oxidizing flame when subjected to Borax Bead test:

  1. Cu+2
  2. Co+2
  3. Cr+3
  4. Ni+2

2 / 10

Sulphur is not present in:

3 / 10

Which of the following gas will turns lime water milky:

  1. Cl2
  2. NO2
  3. CO
  4. CO2

4 / 10

Elements which exhibits maximum catenation property:

  1. C
  2. Pb3O4
  3. Ge
  4. PbO2

5 / 10

A gas which burn with blue flame is:

  1. CO2
  2. N2
  3. CO
  4. NO

6 / 10

Which compound of silicon used as filler in soap to make it heavy:

  1. SiO2
  2. Na2SiO3
  3. H2SiO3
  4. Silicones

7 / 10

Pb3O4 has chemical name of:

8 / 10

Stable shape in which PbCrO4 exist:

9 / 10

What is the nature of solution of Borax:

10 / 10

Which of the following is the correct number of lone-pair with oxygen in CO:

  1. 1
  2. 2
  3.  3
  4. 4

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Chemistry 12th Ch 4 Group VA and Group VIA Elements Additional MCQs

TCA Notes Chemistry 12th Ch 4 Group VA and Group VIA Elements Additional MCQs

You can prepare these MCQs below before attempting.

1 / 11

Which one the following elements occur free in nature:

2 / 11

ellow colour of Nitric Acid is due to the presence of:

  1. NO2
  2. NO
  3. N2O
  4. N2O4

3 / 11

Gold dissolve in Aqua regia to give:

  1. AuCl2
  2. AuCl
  3. AuCl3
  4. None

4 / 11

When red phosphorous is heated with HNO3 it forms:

  1. H3PO4
  2. HPO2
  3. H2PO3
  4. H3PO3

5 / 11

What is the number of electrons present in the valence shell of P in PCl3:

6 / 11

Phosphorous shows oxidation state (+3) in which of the following:

  1. H4P2O7
  2. PO4-3
  3. H3PO3
  4. H3PO4

7 / 11

Which element is the most abundant in the earth's crust:

8 / 11

The brown gas formed when metal reduces HNO3 is:

  1. N2O5
  2. N2O3
  3. NO2
  4. NO

9 / 11

In which compound of nitrogen, the oxidation state of N is (+l):

  1. N2O
  2. NO
  3. NO2
  4. N2O4

10 / 11

FeSO4 forms brown ring with:

  1. N2O4
  2. NO
  3. NO2
  4. None of these

11 / 11

"Lead" in lead pencil is:

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Chemistry 12th Ch 5 The Halogens and The Noble Gases Additional MCQs

TCA Notes Chemistry 12th Ch 5 The Halogens and The Noble Gases Additional MCQs

You can prepare these MCQs below before attempting.

1 / 13

Which noble gas does not obey octet rule:

2 / 13

Which is the most polarized noble gas:

3 / 13

XeF2 molecule ls:

4 / 13

hat is the reason for lowest bond dissociation energy of F2 among the halogens:

5 / 13

Which of the halogens is most easily reduced:

  1. I2
  2. Br2
  3. F2
  4. Cl2

6 / 13

Which silver salt is sparingly soluble in H2O:

7 / 13

Halogen used in toothpaste, it builds protecting covering:

8 / 13

Which of the following react with H in dark:

  1. F2
  2. I2
  3. Cl2
  4. Br2

9 / 13

Which of the following is used in radiotherapy:

10 / 13

Who reported the first noble gas:

11 / 13

All the halogens are coloured. The intensity of the colour depends on:

12 / 13

Oxidation state of Ca in Ca(OCl)Cl (bleaching powder) is:

13 / 13

Which of the following has greater volatility:

  1. CH3F
  2. CH3CI
  3. CH3Br
  4. CH3l

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Chemistry 12th Ch 6 Transition Elements Additional MCQs

TCA Notes Chemistry 12th Ch 6 Transition Elements Additional MCQs

You can prepare these MCQs below before attempting.

1 / 10

Highest oxidation state of Mn in which compound:

  1. K2MnO4
  2. KMnO4
  3. MnO
  4. MnO2

2 / 10

The trace metal present in insulin is:

3 / 10

The hybridization of Ni in [Ni(CN)4]-2 ion is:

  1. sp3
  2. dsp3
  3. d2sp3
  4. dsp2

4 / 10

Which of the following cation has maximum unpaired electron:

  1. Ni+2
  2. Co+2
  3. Mn+2
  4. Fe2+

5 / 10

Which is the configuration of Cr:

  1. 3d4 4s2
  2. 3d5 4s1
  3. 2d6 4s1
  4. 2d4 4s2

6 / 10

What is formula of haematite:

  1. FeS2
  2. FeO3
  3. Fe2O3
  4. Fe3O4

7 / 10

No. of $\bar{e}$-pairs accepted by the central atom in a transition metal complex is called:

8 / 10

The black image on an exposed and developed photographic film is composed of:

  1. Ag
  2. Ag2O
  3. AgBr
  4. Ag[(SrO3)2]

9 / 10

Mild steel contain carbon:

10 / 10

To prevent corrosion, iron pipes carrying drinking water are covered with Zn by process called:

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Chemistry 12th Ch 7 Fundamental Principles of Organic Chemistry Additional MCQs

TCA Notes Chemistry 12th Ch 7 Fundamental Principles of Organic Chemistry Additional MCQs

You can prepare these MCQs below before attempting.

1 / 14

Isomerism exhibited by ethanol and dimethyl ether is:

2 / 14

Which one of the following does not show geometric isomerism:

  1. ClHC = CHCl
  2. HC - HC = CHCH3
  3. H2C = CHCl
  4. BrClC = CClBr

3 / 14

Concept of octane number was Introduced by:

4 / 14

Which of the following form of coal has maximum %age of carbon:

5 / 14

Which of the following is the use of light naphtha:

6 / 14

An isomer of ethanol is:

7 / 14

Which of the following has zero dipole moment:

8 / 14

Fractional distillation of petroleum yields only about ___ of gasoline.

9 / 14

The octane number is 100% in petroleum:

10 / 14

Which one is the functional group of esters:

11 / 14

Carbon atom of HCHO (methanal, formaldehyde) is:

  1. sp hybridized
  2. sp2 hybridized
  3. sp3 hybridized
  4. Not hybridized

12 / 14

Alkanoic acid is another name of:

13 / 14

Which of the following compounds will exhibit cis-trans (isomerism):

14 / 14

The reaction C8H18 --Δ→ C3H6 + Fragments is:

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Chemistry 12th Ch 8 Aliphatic Hydrocarbons Additional MCQs

TCA Notes Chemistry 12th Ch 8 Aliphatic Hydrocarbons Additional MCQs

You can prepare these MCQs below before attempting.

1 / 15

Which type of reactions are given by alkanes:

2 / 15

Acetylene has a characteristic smell resembling that of:

3 / 15

When ethylene ozonide is treated with Zn-dust we get:

4 / 15

Unsaturated nature of alkene can be detected by:

  1. Decolorization of red Br2 water in CCl4
  2. Decolorization of pink colour of KMnO4 solution
  3. Ozonolysis
  4. All

5 / 15

Vicinal dihalides on treatment with Zn-dust give:

6 / 15

Formula of lindlers catalyst is:

  1. Pb(BaSO4) / Quinoline
  2. Ba(PbSO4) / Quinoline
  3. Pd(BaSO3) / Quinoline
  4. Pd(BaSO4) / Quinoline

7 / 15

Ammonical solution of silver nitrate reacts with:

8 / 15

Polymerization of acetylene forms:

9 / 15

The number of xylene isomers

10 / 15

Hydroxylation of alkene can be carried out by:

  1. Alkaline KMnO4
  2. Basic O3
  3. Alkaline H2SO4
  4. K2Cr2O7

11 / 15

The most reactive hydrocarbon is:

12 / 15

Cycloalkanes and Alkenes contain which general formula:

  1. CnH2n+2
  2. CnH2n
  3. CnH2n-2
  4. CnHn

13 / 15

Which of the following is not alicyclic:

14 / 15

Number of acidic hydrogens present in 1-butyne is:

15 / 15

Chemically Baeyer's reagent is:

  1. 1% Alkaline KMnO4
  2. 1% acidic KMnO4
  3. 15% Alkaline KMnO4
  4. 2% Alkaline KMnO4

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Chemistry 12th Ch 9 Aromatic Hydrocarbons Additional MCQs

TCA Notes Chemistry 12th Ch 9 Aromatic Hydrocarbons Additional MCQs

You can prepare these MCQs below before attempting.

1 / 28

Effect of substituent on benzene ring is due to:

2 / 28

In which of the following cases, the benzene rings are isolated:

3 / 28

Benzene is stable than ethene because it has:

4 / 28

Which of the following is ortho and para directing group:

  1. -OH
  2. -OCH3
  3. -CHO
  4. -NH2

5 / 28

Among the following compounds which can be readily sulphonated:

6 / 28

Hydrogen to carbon ratio in aromatic hydrocarbons is:

7 / 28

The benzene ring is oxidized to maleic anhydride when strongly heated with:

  1. Ni at 200°C
  2. V2O5 at 450°C
  3. AlCl3 at 150°C
  4. Sunlight

8 / 28

Main source of aromatic compound is:

9 / 28

Toluene can be converted to benzoic acid in the presence of:

  1. dil. NaOH
  2. dil. HNO3
  3. Conc. HNO3
  4. Acidified KMnO4

10 / 28

Cyclic structure of benzene was proposed by:

11 / 28

Benzene does not undergo:

12 / 28

The carbon-carbon bond distance in benzene:

  1. 1.54 $\mathring{A}$
  2. 1.34 $\mathring{A}$
  3. 1.2 $\mathring{A}$
  4. 1.39 $\mathring{A}$

13 / 28

In toluene synthesis by Friedel Craft, the reactants in addition to anhydrous AlCl3 are:

  1. C6H6 + CH4
  2. C6H5Cl
  3. C6H6 + CH3CI
  4. C6H6Cl + CH4

14 / 28

Benzophenone is also known as:

15 / 28

The no. of possible isomers of xylene are:

16 / 28

When acetylene is heated at 300°C in Cu-tube, the product obtained is:

17 / 28

Which one of the following species is ortho and para director:

  1. -CHO
  2. -SO3H
  3. -NO2
  4. -Cl

18 / 28

Which of the following explains the structure of benzene:

19 / 28

The conversion of n-hexane into benzene by heating in the presence of (A2O3 + SiO2 + Cr2O3) is called:

20 / 28

Which of the following is called benzyl radical:

  1. C6H5-
  2. C6H5 - CH =
  3. C6H2 -CH2 –
  4. C6H5 -C≡

21 / 28

The second substitution in benzene ring would give rise to isomeric products:

22 / 28

Molecular mass of benzene is determined by:

23 / 28

C-H bond lengths in benzene are:

  1. 0.99 $\mathring{A}$
  2. 1.09 $\mathring{A}$
  3. 1.12 $\mathring{A}$
  4. 1.397 $\mathring{A}$

24 / 28

Each carbon in benzene ring is __ hybridized:

  1. sp
  2. sp2
  3. sp3
  4. None of these

25 / 28

On hydrogenation benzene liberates energy:

26 / 28

The molecular formula of naphthalene is:

  1. C10H8
  2. C10H10
  3. C10H12
  4. C12H12

27 / 28

Chlorine react with benzene in the presence of sunlight to give:

28 / 28

Structure of benzene is resonance hybrid of all __ structures:

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Chemistry 12th Ch 10 Alkyl Halides Additional MCQs

TCA Notes Chemistry 12th Ch 10 Alkyl Halides Additional MCQs

You can prepare these MCQs below before attempting.

1 / 18

Which of the following factors does not affect the SN1 rate is:

2 / 18

In β-elimination reaction, nucleophile attacks on:

3 / 18

In unimolecular reactions, the reaction completes in:

4 / 18

Grignard's reagent reacts to form alkane with:

5 / 18

Grignard's reagents produce primary alcohol with:

6 / 18

1-bromobutane on reaction with alcoholic potassium hydroxide gives:

7 / 18

Which one of the following is not associated with SN2 mechanism:

  1. 100% inversion of configuration
  2. 2nd order kinetics
  3. Tertiary alkyl halides
  4. Change of hybridization from sp3 to sp2 in transition state

8 / 18

Reaction of C2H5MgBr with CO2 is an example of:

9 / 18

In the transition state of SN2 mechanism reaction with alkyl halides, which or the following orbital hybridization is involved:

  1. sp
  2. sp²
  3. sp2
  4. dsp2

10 / 18

Carbocation is a/an:

11 / 18

Acetic acid can be obtained from C3MgI by treatment with:

  1. H2O
  2. CINH2
  3. CO2
  4. HCHO

12 / 18

Carbanians are:

13 / 18

Which substance is used to convert alcohol to alkyl halide:

  1. SOCl2
  2. PCl3
  3. HCl + ZnCl2
  4. All of these

14 / 18

Ethyl bromide when reduced with nascent hydrogen the product will be:

15 / 18

When bromomethane is hydrolyzed by aqueous NaOH solution which ion brings about the first stage of substitution:

  1. Na+
  2. OH-
  3. Anyone
  4. No reaction

16 / 18

The substances which donates a pair of electron to electrophile are called:

17 / 18

Which one of the following is not a nucleophile:

  1. CH3 - NH2
  2. CH2 = CH2
  3. OH-
  4. CH3+

18 / 18

Which of the following alkyl halide is the most reactive towards the attacking nucleophile:

  1. CH3F
  2. CH3Cl
  3. CH3Br
  4. CH3I

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Chemistry 12th Ch 11 Alcohols, Phenols and Ethers Additional MCQs

TCA Notes Chemistry 12th Ch 11 Alcohols, Phenols and Ethers Additional MCQs

You can prepare these MCQs below before attempting.

1 / 26

The correct name of H2C = CH - CH2 - CH2 – OH is:

2 / 26

Which of the following is more reactive:

3 / 26

Bakelite is thermosetting plastic, it is formed by the polymerization of:

4 / 26

Williamsons synthesis is used for the synthesis of:

5 / 26

Which of the following give iodoform test:

  1. CH3OH
  2. C2H5OH
  3. Methanal
  4. 1-propanol

6 / 26

Which of the following is more reactive where O-H bonds break:

7 / 26

Aldehydes after catalytic reduction change to:

8 / 26

95% ethanol is called:

9 / 26

Which of the following alcohol is used in the perfumes and for flavouring:

10 / 26

The hydrolysis of sugar is called:

11 / 26

Which statement is incorrect about phenol:

  1. It is colourless, crystalline poisonous solid
  2. It does not turn blue litmus paper red
  3. It liberates CO2 gas from carbonate
  4. Above 65.9oC it is miscible wither water

12 / 26

Which of the following is the weakest acid:

13 / 26

Which inorganic reagent may be used to distinguish between phenol methanol:

  1. Alkaline aqueous I2
  2. Aqueous NaHCO3
  3. K2Cr2o7 in dil. H2SO4
  4. Na

14 / 26

Diethyl ether can be decomposed by heating with:

  1. HI
  2. NaOH
  3. Water
  4. KMnO4

15 / 26

When 2-pentanol undergoes oxidation the product is:

16 / 26

Phenol is also called:

17 / 26

Which of the following alcohol is least soluble in water:

  1. CH3OH
  2. C2H5OH
  3. C3H7OH
  4. C4H9OH

18 / 26

100% pure alcohol is called:

19 / 26

Which of the following compound should have lowest boiling point:

  1. C2H6
  2. C2H5Cl
  3. CH3–O-CH3
  4. C2H5OH

20 / 26

thanol reacts with sodium metal to liberate:

  1. CO2 gas
  2. H2 gas
  3. CO gas
  4. Steam

21 / 26

When ethyl bromide (C2H5Br) is heated with Ag2O in the absence of moisture the product formed is:

22 / 26

Which of the following compound has no unsaturation:

23 / 26

When ether is protonated, the conjugate acid formed is called:

24 / 26

Which of the following alcohol is commonly used as anti-freeze:

25 / 26

Which of the following will have the highest boiling point:

26 / 26

The conversion of ethanol to ethene is an example of:

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Chemistry 12th Ch 12 Aldehydes and Ketones Additional MCQs

TCA Notes Chemistry 12th Ch 12 Aldehydes and Ketones Additional MCQs

You can prepare these MCQs below before attempting.

1 / 29

Calcium formate Ca(HCOO)2 on dry heating yields:

  1. HCHO
  2. CH3CHO
  3. CH3COCH3
  4. CH3COOH

2 / 29

Aldehydes combine with alcohol in presence of hydrogen chloride gas to form:

3 / 29

For the preparation of CH3CHO from calcium acetate we need:

  1. 2 molecules of Ca(CH2COO)2
  2. 1 mole of Ca(CH2COO)2 and 1 molecule of Ca(HCOO)2
  3. 2 molecules of Ca(HCOO)2
  4. None of these

4 / 29

Ethanal has __ sigma bonds:

5 / 29

Which of the following compounds is acetophenone:

  1. C6H5COCH3
  2. C6H5COCC6H5
  3. CH3COCH3
  4. C6H5CHO

6 / 29

Which of the following tests is shown by ketones:

7 / 29

Mild oxidizing agent among the following is:

  1. K2Cr2O7 (acidified)
  2. KMnO4 (alkaline)
  3. Ammonical AgNO3
  4. All of above

8 / 29

C=O and C=C bonds are differentiated by:

9 / 29

Reactivity of carbonyl compounds is due to:

10 / 29

Which of the following will undergo nucleophilic addition reaction easily:

11 / 29

Which of the following is used as ink preservative:

12 / 29

Which of the following is resistant to oxidation under normal condition:

  1. CH3OH
  2. C2H5OH
  3. CH3CHO
  4. CH3COCH3

13 / 29

Which one of the following compounds is not derivative of NH3:

14 / 29

Aldol compound consists of:

15 / 29

Which one of the following is the strongest reducing agent:

  1. C3H8
  2. CH2O
  3. C3H7OH
  4. CH3COCH3

16 / 29

Which is a mixed ketone:

17 / 29

Which of the following aldehyde is most reactive:

  1. HCHO
  2. CH3CHO
  3. C6H5CHO
  4. All of above

18 / 29

Aldehyde give precipitate with Fehling solution on:

19 / 29

Which of the following aldehydes is used to prepare urotropine medicine:

20 / 29

In which of the following compounds, carbon number is decreased during the oxidation:

21 / 29

Aldehyde and ketone have higher boiling point than correspond compounds of the following except:

22 / 29

Which of the following compound is least reactive:

  1. HCHO
  2. CH3CHO
  3. CH3COCH3
  4. C6H5CHO

23 / 29

Carbonyl compounds react with hydroxyl amine (NH2OH) to form:

24 / 29

Paraldehyde is polymer of:

  1. HCHO
  2. CH3CHO
  3. CH3COCH3
  4. CH3CH2CH2OH

25 / 29

Paraldehyde is used as a:

26 / 29

Which of the following is not a use of formaldehyde:

27 / 29

Which is not true about Cannizzaro's reaction:

28 / 29

When aldehyde reacts with Tollen's reagent:

  1. A ketone is produced
  2. An alcohol is produced
  3. Ag+ ions are produced
  4. Ag+ ions are reduced

29 / 29

Cyanohydrins are formed from carbonyl compounds by reaction mechanism:

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Chemistry 12th Ch 13 Carboxylic Acids Additional MCQs

TCA Notes Chemistry 12th Ch 13 Carboxylic Acids Additional MCQs

You can prepare these MCQs below before attempting.

1 / 21

Some amino acids are most important because they are the final product of hydrolysis of peptide and protein and they are:

2 / 21

Which of the following is neutral amino acid:

3 / 21

Ninhydrin reacts with amino acid to form product which has colour:

4 / 21

The amino acid which body can synthesize are called:

5 / 21

In amino acid proton is transferred from one point to the other point and this dipolar ion ls called:

6 / 21

Which product is not formed when acetic acid reacts with SOCl2 (Thionyl chloride):

  1. CH3CI
  2. CH3COCl
  3. HCl
  4. SO2

7 / 21

Amino acids are classified into following types:

8 / 21

Which one of the following element is not present in all proteins:

9 / 21

Slight oxidation of primary alcohol gives:

10 / 21

Carboxylic acid can be changed to acid chloride by the treatment with-

  1. S2Cl2
  2. SOCl2
  3. HCl
  4. HOCI

11 / 21

The IUPAC name of COOH-CH2-CH2-COOH is:

12 / 21

Which one of the following is not an amino acid:

13 / 21

Which of the following is the strongest acid:

  1. HCOOH
  2. CH3CoOH
  3. CH3 -CH2 - COOH
  4. Cl - CH2- COOH

14 / 21

The simplest of all amino acid:

15 / 21

Which one of the following metal can evolve hydrogen from acetic acid:

16 / 21

Which one of the following is not a dicarboxylic acid:

17 / 21

C2H4Br --KCN→ A --H2O/H+→B: The compound 'B' is:

18 / 21

Reverse of esterification is known as:

19 / 21

Which of the following esters shows the flavor of orange:

20 / 21

Which of the following will react with both ethanol and ethanoic acid at room temperature:

  1. CaCO3
  2. CuO
  3. Na-metal
  4. CH3OH

21 / 21

The general formula of monocarboxylic acid:

  1. CnHnCOOH
  2. CnH2n+1COOH
  3. CnH2nCOOH
  4. C2H2n-2COOH

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Chemistry 12th Ch 14 Macromolecules Additional MCQs

TCA Notes Chemistry 12th Ch 14 Macromolecules Additional MCQs

You can prepare these MCQs below before attempting the Quiz.

1 / 29

The substance that retard the activity of enzyme is called:

2 / 29

Which one of the following is not a polymer:

3 / 29

Which one of the following is inorganic polymer:

4 / 29

Which one of the following is not a fatty acid:

5 / 29

Quantitatively unsaturation of oils is determined by:

6 / 29

Cholesterol belong to:

7 / 29

Amino acids in protein are linked together by:

8 / 29

The colour which cellulose can give with I2 solution:

9 / 29

Hardening of oil involves which of the following process:

10 / 29

Which characteristic functional group is present in fats:

11 / 29

Which one of the following is purines:

12 / 29

All fats are:

13 / 29

Which one of the following plastic is a thermo setting plastic:

14 / 29

Which one of the following is a co-polymer:

15 / 29

Glyosidic linkage is present in:

16 / 29

Cholesterol is an important precursor in the biosynthesis of: .

17 / 29

Which one of the following polymer is called a polyamide:

18 / 29

Which of these polymers is a synthetic polymer:

19 / 29

Starch is a polymer of:

20 / 29

The fiber which is made from acrylonitrile as monomer:

21 / 29

Which of these enzymes is an acidic pH active enzymes:

22 / 29

After digestion protein change to:

23 / 29

Raffinose is a/an:

24 / 29

Which of the following is optimum temperature of most of enzymes:

25 / 29

Which of the following is the most abundant organic substance found in nature:

26 / 29

In which of the following case Zn2+ ions are used as co-factor:

  1. Chrome oxidase
  2. Carbonic anhydrase
  3. Glucose
  4. Anaerobic oxidation of C6H12O6

27 / 29

Which of the following is not a polymer:

28 / 29

Which of the following is an example of associated lipid:

29 / 29

Formation of Terylene and Nylon both are examples of:

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Chemistry 12th Ch 15 Common Chemical Industries in Pakistan Additional MCQs

TCA Notes Chemistry 12th Ch 15 Common Chemical Industries in Pakistan Additional MCQs

You can prepare these MCQs below before attempting the Quiz.

1 / 19

Which of the following element is not macro-nutrient:

2 / 19

Which of the following is not micro-nutrient:

3 / 19

Which is not argillaceous material:

4 / 19

Which fertilizer is widely used in Pakistan:

  1. Urea
  2. KNO3
  3. DAP
  4. K2SO4

5 / 19

Which component, if present in paper causes brittleness:

6 / 19

Nitrogen helps in:

7 / 19

What is the main function of rotary kiln:

8 / 19

Which of the following process is alkaline:

9 / 19

DAP contains P2O5:

10 / 19

Which of the following compounds in present in highest percentage in cement:

  1. Lime
  2. Clay
  3. Na2O
  4. Alumina

11 / 19

Which substance is used as filler or additive in paper making:

12 / 19

Which of the following fertilizers, contains 75% nutrient:

  1. DAP
  2. TAP
  3. Urea
  4. NH4NO3

13 / 19

The %age of nitrogen in NH4NO3 is:

14 / 19

Which element is often present in all fertilizers:

15 / 19

Which of the following is main process in paper industry:

16 / 19

Which of the following bleaching agents is largely used for bleaching of pulp in Pakistan:

  1. O2
  2. O3
  3. ClO2
  4. Cl2

17 / 19

The %age gypsum in the cement is:

18 / 19

In the cement manufacture, the digestor revolves at R.P.M.

19 / 19

What is clinker:

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Chemistry 12th Ch 16 Environmental Chemistry Additional MCQs

TCA Notes Chemistry 12th Ch 16 Environmental Chemistry Additional MCQs

You can prepare these MCQs below before attempting the Quiz.

1 / 21

The yellow colour in photochemical smog is due to the presence of:

  1. NO
  2. NO2
  3. SO2
  4. CO2

2 / 21

Which of the following is primary pollutant:

  1. H2SO4
  2. N2O
  3. H2CO3
  4. SO2

3 / 21

In which of the following layer of atmosphere there is more thickness of 0zones:

4 / 21

Which of the following air pollutants is quiet killer:

  1. CO2
  2. CO
  3. NO2
  4. N2O4

5 / 21

The cause of water pollution is:

6 / 21

Which of the following factors help to measure quality of water:

7 / 21

Which part of atmosphere is near to the earth:

8 / 21

Synthetic organic chemicals can cause which of the following problems:

9 / 21

Which of the following is considered as cause of pollution:

10 / 21

Which method is used to remove permanent hardness of water:

11 / 21

The mean residence time of methane (CH4) in atmosphere is:

12 / 21

Thickness of atmosphere is:

13 / 21

The gas that binds strongly with hemoglobin is:

14 / 21

The concentration of dissolved oxygen in water ranges from:

15 / 21

Ozone depletion is mainly due to the reaction of ozone (O3) with:

  1. O2
  2. CFCs
  3. SO2
  4. All of these

16 / 21

In human liver which substance cause cancer:

  1. Chloroform
  2. Methane
  3. Carbon dioxide
  4. H2SO3

17 / 21

How much fresh water is used for domestic purpose:

18 / 21

The most abundant element in the earth crust is:

19 / 21

The residence time of NO is:

20 / 21

The normal amount of overhead ozone is about:

21 / 21

When ground water seeps in the landfill a mixture of dissolved, suspended and microbial contaminants is formed, this mixture is called:

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FSc Notes Chemistry 12th