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

March 20, 2024No Comments
FSc Chemistry 12th Ch 5 The Halogens and The Noble Gases MCQs

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

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

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Exercise MCQs

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.

Your score is

The average score is 0%

0%

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

Your score is

The average score is 0%

0%

 Q1. Fill in the blanks:

(i) The halogen with the highest electronegativity is fluorine.

(ii) HI is reducing agent.

(iii) The only halogen acid which is not a strong acid is HF.

(iv) Tincture of iodine is a common antiseptic.

(v) The halogen with the lowest melting and boiling points is fluorine.

(vi) Bleaching powder is prepared from Cl2 and slaked lime.

(vii) Bromine is the halogen which causes burns on the skin which heal slowly.

(viii)  Bleaching powder is used for making unshrinkable wool.

(ix) A mixture of 80% He and 20% O2 is used for breathing by the sea divers.

(x) Noble gas used to fill fluorescent tubes is argon.

 

Q2. Indicate True or False:

(i) HF is used for etching glass. True

(ii) HI is weaker reducing agent as compared to HF. False

(iii) Bleaching powder is completely soluble in water. False

(iv) The formula of perchloric acid is HClO3. False

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

(vi) α-particles emitted by radioactive elements are ions of radon. False

(vii) Radon is the only one of the noble gases that is radioactive. True

(viii) The molecules of the noble gases are all monoatomic. True

(ix) Argon is used to fill electric bulbs. True

(x) The noble gas which is present in the largest amount in atmosphere is krypton. False

 

Q3. Multiple choice questions. Encircle the correct answer:

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

  1. HF
  2. HBr
  3. HI
  4. HCI

(ii) Chlorine heptaoxide (Cl2O7) reacts with water to form:

  1. Hypochlorous acid
  2. Chloric acid
  3. Perchloric acid
  4. Chlorine and oxygen

(iii) Hydrogen bond is the strongest between the molecules of:

  1. HF
  2. HCI
  3. HBr
  4. HI

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

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

(v) The anhydride of HCIO4 is:

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

(vi) Bleaching powder may be produced by passing chlorine over:

  1. Calcium carbonate
  2. Hydrated calcium sulphate
  3. Anhydrous calcium sulphate
  4. Calcium hydroxide

(vii) Which is the strongest acid:

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

(viii) Which halogen occurs naturally in a positive oxidation state:

  1. Fluorine
  2. Chlorine
  3. Bromine
  4. Iodine

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

  1. An alkali metal
  2. A transition element
  3. A noble gas
  4. A halogen

(x) 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

Additional MCQs

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

 

(i) Which noble gas does not obey octet rule:

  1. Ne
  2. He
  3. Ar
  4. Kr

(ii) Which is the most polarized noble gas:

  1. Kr
  2. Xe
  3. He
  4. Rn

(iii) XeF2 molecule ls:

  1. Tetrahedral
  2. Linear
  3. Pyramidal
  4. Trigonal planar

(iv) What is the reason for lowest bond dissociation energy of F2 among the halogens:

  1. Low Ionization Energy
  2. Absence of d-orbitals
  3. Low lattice energy of salts
  4. Repulsion among non-bonding electrons

(v) Which of the halogens is most easily reduced:

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

(vi) Which silver salt is sparingly soluble in H2O:

  1. AgF
  2. AgBr
  3. AgCI
  4. AgI

(vii) Halogen used in toothpaste, it builds protecting covering:

  1. F
  2. Cl
  3. Br
  4. I

(viii) Which of the following react with H in dark:

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

(ix) Which of the following is used in radiotherapy:

  1. Rn
  2. Xe
  3. Kr
  4. Ar

(x) Who reported the first noble gas:

  1. Cavendish
  2. Frankland
  3. William Ramsay
  4. Rayleigh

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

  1. Valence electron
  2. Atomic number
  3. Atomic mass
  4. None of these

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

  1. +3
  2. +4
  3. +2
  4. +1

(xiii) Which of the following has greater volatility:

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