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NCERT Exemplar · Class 12 · Chemistry

Chapter 10: Haloalkanes and Haloarenes

Practice each question, then open the answer or worked solution.

Questions

55 questions
Q1Written answer

The order of reactivity of following alcohols with halogen acids is ___________.

NCERT Exemplar Solutions of Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes.NCERT Exemplar Solutions of Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes-1

(i) (A) > (B) > (C)

(ii) (C) > (B) > (A)

(iii) (B) > (A) > (C)

(iv) (A) > (C) > (B)

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Worked solution

Option (ii) is the answer.

Q2Written answer

Which of the following alcohols will yield the corresponding alkyl chloride on

reaction with concentrated HCl at room temperature?

NCERT Exemplar Solutions of Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes-2

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Worked solution

Option (iv) is the answer.

Q3Written answer

Identify the compound Y in the following reaction.

NCERT Exemplar Solutions of Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes-3

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Worked solution

Option (i) is the answer.

Q4Written answer

Toluene reacts with a halogen in the presence of iron (III) chloride giving ortho

and para halo compounds. The reaction is

(i) Electrophilic elimination reaction

(ii) Electrophilic substitution reaction

(iii) Free radical addition reaction

(iv) Nucleophilic substitution reaction

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Worked solution

Option (ii) is the answer.

Q5Written answer

Which of the following is the halogen exchange reaction?

NCERT Exemplar Solutions of Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes-4

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Worked solution

Option (i) is the answer.

Q6Multiple choice

Which reagent will you use for the following reaction?

CH3CH2CH2CH3 → CH3CH2CH2CH2Cl + CH3CH2CHClCH3

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Correct option: A
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Worked solution

Option (i) is the answer.

Q7Written answer

Arrange the following compounds in the increasing order of their densities.

NCERT Exemplar Solutions of Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes-5

(i) (a) < (b) < (c) < (d)

(ii) (a) < (c) < (d) < (b)

(iii) (d) < (c) < (b) < (a)

(iv) (b) < (d) < (c) < (a)

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Worked solution

Option (i) is the answer.

Q8Written answer

Arrange the following compounds in increasing order of their boiling points.

NCERT Exemplar Solutions of Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes-6

(i) (b) < (a) < (c)

(ii) (a) < (b) < (c)

(iii) (c) < (a) < (b)

(iv) (c) < (b) < (a)

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Worked solution

Option (iii) is the answer.

Q9Multiple choice

In which of the following molecules carbon atom marked with an asterisk (*) is

asymmetric?NCERT Exemplar Solutions of Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes-7

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Correct option: B
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Worked solution

Option (ii) is the answer.

Q10Written answer

Which of the following structures is enantiomeric with the molecule (A)

given below :NCERT Exemplar Solutions of Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes-8

NCERT Exemplar Solutions of Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes-9

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Worked solution

Option (i) is the answer.