NCERT Solution for class 12 Chemistry chapter 10: Haloalkanes and Haloarenes

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NCERT Solutions for Class 12 Chemistry chapter 10 Haloalkanes and Haloarenes deals with the study of important preparation methods, physical and chemical properties and the applications of the organohalogen compounds. Some of the important topics in the Haloalkanes and Haloarenes chapter include:

Expected no. of questions: 2 to 3 questions of total 6 marks

Download PDF: NCERT Solutions for Class 12 Chemistry Chapter 10 pdf

NCERT Solutions for Class 12 Chemistry Chapter 10

NCERT Solutions for class 12 Chemistry chapter 10 are as given below.

Class 12 Chemistry Chapter 10 Haloalkanes & Haloarenes – Important Topics

Haloalkanes and Haloarenes are those hydrocarbons where one of the hydrogen-bonded to the central carbon atom is replaced by a halogen. Some examples of haloalkenes and haloarenes are chloramphenicol, chloroquine, Chlorofluorocarbon, etc.

Haloalkanes

Haloalkanes are made up of aliphatic alkanes.
The halogen atom is attached to the sp³ hybridized carbon atom of alkyl group.
Haloalkanes are saturated organic compounds and are odourless.
Haloalkanes precipitate in SN² substitution reactions.
Example: CH₃Cl (Methyl Chloride) and CH₃CH₂Br (Ethyl Bromide)

Haloarenes

Haloarenes consists of hydrocarbons with aromatic ring where one or more hydrogren is replaced by halogens.
The halogen atom is attached in the sp³ hybridized carbon atom of the alkyl group.
Haloarenes do not precipitate in SN²substitution reactions.
Haloarenes have a sweet odour.
Example: Chlorobenzene, Bromobenzene.

Also Read:

Chapter Related Links
Ester Hydrolysis	Grignard Reagent	Optical Isomerism
Haloalkanes and Haloarenes Important Questions	Paradichloro Benzene	Mitsunobu Reaction
Benzene Hexachloride	Elimination Reaction	Nucleophilic Substitution

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CBSE CLASS XII Related Questions

1.
Which of the reactions is used in the conversion of a ketone into hydrocarbon?
- Reimer-Tiemann reaction
- Wolff-Kishner reduction
- Aldol condensation
- Stephen reaction
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2.
Half-life (\( t_{1/2} \)) of a first order reaction is 1386 s. The value of rate constant is:
- \(0.5 \times 10^{-4} \, \text{s}^{-1}\)
- \(5.0 \times 10^{-4} \, \text{s}^{-1}\)
- \(0.5 \times 10^{-5} \, \text{s}^{-1}\)
- \(0.5 \times 10^{-3} \, \text{s}^{-1}\)
View Solution
3.
Which of the following reagents are used to prepare primary amines by Hofmann bromamide degradation reaction?
- (i), (ii) and (iv)
- (i) and (iii)
- (i), (ii) and (iii)
- (i), (iii) and (iv)
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4.
Calculate emf of the following cell at 298 K: \[ \text{Cr(s)} \, | \, \text{Cr}^{3+} (aq) \, (0.1\, M) \; || \; \text{Fe}^{2+} (aq) \, (0.01\, M) \, | \, \text{Fe(s)} \] Given: \[ E^\circ_{\text{Cr}^{3+}/\text{Cr}} = -0.74 \, V, \quad E^\circ_{\text{Fe}^{2+}/\text{Fe}} = -0.44 \, V, \quad \log 10 = 1 \]
View Solution
5.
The rate for the following reaction is given by: \[ A + B \rightarrow C, \quad \text{Rate} = k[A][B]^2 \] How is the rate affected if we double the concentration of B?
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6.
Which of the following is most basic?
- \( Mn_2O_7 \)
- \( MnO_2 \)
- \( MnO \)
- \( Mn_2O_3 \)
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