Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes Objective Type Questions and Answers | Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes Quiz

(1) Chloropicrin is formed by the reaction of

[A] steam on carbon tetrachloride

[B] nitric acid on chlorobenzene

[C] chlorine on picric acid

[D] nitric acid on chloroform

Answer: nitric acid on chloroform

(2) Fitting reaction can be used to prepare

[A] Toluene

[B] Acetophenon

[C] Diphenyl

[D] Chlorobenzene

Answer: Diphenyl

(3) In the above reaction, the product D is

[A] Propane

[B] 2, 3-Dimethylbutane

[C] Hexane

[D] Allyl bromide

Answer: 2, 3-Dimethylbutane

(4) Fitting reaction can be used to prepare

[A] Toluene

[B] Acetophenon

[C] Diphenyl

[D] Chlorobenzene

Answer: Diphenyl

(5) Identify the end product (C) in the following sequence:

[A]

[B]

[C]

[D]

Answer:

(6)

In the above reaction, the product D is

[A] Propane

[B] 2, 3-Dimethylbutane

[C] Hexane

[D] Allyl bromide

Answer: 2, 3-Dimethylbutane

(7) Identify X and Y in the following sequence

[A] X = KCN, Y = LiAlH₄

[B] X = KCN, Y = H₃O⁺

[C] X = CH₃Cl, Y = AlCl₃ HCl

[D] X = CH₃NH₂, Y = HNO₂

Answer: X = KCN, Y = LiAlH₄

(8) In the following sequence of reactions:

[A] n-propylamine

[B] isopropylamine

[C] ethylamine

[D] ethylmethylamine

Answer: ethylmethylamine

(9)

[A]

[B]

[C]

[D]

Answer:

(10) Identifay Z in the series

[A] C₂H₅I

[B] C₂H₅OH

[C] CHI₃

[D] CH₃CHO

Answer: CHI₃

(11) Of the options give, the one statement about trichloromethane (Chloroform) that is correct is ____

[A] It should be stored in a well ventilated place, exposed to sunlight.

[B] In the presence of air or light, chloroform is slowly oxidized into a poisonous compound phosgene.

[C] Chloroform gets reduced with zinc dust and water to form Methylene chloride.

[D] Chloroform is converted into carbon tetrachloride on warming with silver powder.

Answer: Chloroform is converted into carbon tetrachloride on warming with silver powder.

(12) Aryl chlorides and bromides can be easily prepared by ____ of arenes with chlorine and bromine respectively in the presence of Lewis acid catalysts like iron or iron (III) chloride.

[A] Electrophilic addition

[B] Electrophilic substitution

[C] Nucleophilic addition

[D] Nucleophilic substitution

Answer: Electrophilic substitution

(13) At room temperature ethyl chloride, methyl bromide, ethyl chloride and some chlorofluoromethanes exist as____.

[A] Liquid

[B] Solid

[C] Gas

[D] Some of them solid and other liquid

Answer: Gas

(14) When we go down the group 17 in the periodic table, the one option that is incorrect is ____.

[A] size of the halogen atoms increases

[B] change in size of halogen atom results in increase in carbon-halogen bond length

[C] change in size of halogen atom results in carbon-halogen bond enthalpy (kJ mol-1) decrease

[D] reactivity of halogens increases

Answer: reactivity of halogens increases

(15) Triodomethane (Iodoform) was earlier used as an

[A] analgesic

[B] antiseptic

[C] antihistamine

[D] antibiotic

Answer: antiseptic

(16) The chloroflurocarbon compounds of methane and ethane are collectively known as ____

[A] haloalkanes

[B] alkyl halides

[C] Freons

[D] DDT

Answer: Freons

(17) Haloalkanes react with KCN to form__________ as main product, but with AgCN, it form _______ as the chief product.

[A] alkyl cyanides; isocyanides

[B] isocyanides; alkyl cyanides

[C] isocyanides; isocyanides

[D] alkyl cyanides; alkyl cyanides

Answer: alkyl cyanides; isocyanides

(18) In Fittig reaction, aryl halides when treated with ____ in dry ether give an analogous compound in which two aryl groups are joined together.

[A] Potassium

[B] Magnesium

[C] Sodium

[D] Calcium

Answer: Sodium

(19) Of the following, ____________ is not a monohalo-organic compound.

[A] CH₂=CHCl

[B] CH₂=CHCH₂Br

[C] CH₂Cl₂

[D] CH₃CH₂CH₂F

Answer: CH₂Cl₂

(20) The metal present in Grignard reagents is___.

[A] Sodium

[B] Potassium

[C] Magnesium

[D] Calcium

Answer: Magnesium

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Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes MCQs | Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes Objective Type Questions and Answers

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