Class 12 Chemistry - Chapter 10: Haloalkanes and Haloarenes MCQ Questions

19 Questions 38 Minutes

Answered: 0 / 19Unanswered: 19

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Question 1

A 2-Methyl-1-bromobutane

B 1-Bromo-2-methylbutane

C 1 -Bromo-2-ethyl-2-methylethane

D 1-Bromo-2-ethylpropane

Question 2

A (i), (iii), (iv)

B (ii), (iii), (iv)

C (i), (iii), (iii)

D (i), (ii), (iii), (iv)

Question 3

Ethylidene chloride is a/an

A vinylic halide

B allylic halide

C gem-dihalide

D vic-dihalide

Question 4

Which of the following alkyl halides will undergo S_N1 reaction most readily?

A (CH₃)₃C-I

B (CH₃)₃C-Br

C (CH₃)₃C-Cl

D (CH₃)₃C-F

Question 5

Reaction of C₆H₅CH₂Br with aqueous sodium hydroxide follows

A Saytzeff rule

B Any of the above two depending upon the temperature of reaction

C S_N2 mechanism

D S_N1 mechanism

Question 6

Toluene reacts with a halogen in the presence of iron (iii) chloride giving ortho and para halo compounds. The reaction is

A Nucleophilic substitution reaction

B Free radical addition reaction

C Electrophilic substitution reaction

D Electrophilic elimination reaction

Question 7

A a, b, c

B a, d

C b, c

D a, b, c, d

Question 8

A primary alkyl halide would prefer to undergo

A Racemisation

B Î±-Elimination

C S_N2 reaction

D S_N1 reaction

Question 9

(a) N, N-Dimethylmethanamine

A Mixture containing all these in equal proportion

B Methanamine (CH₃NH₂)

C N-methylmethanamine (CH₃-NH-CH₃)

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Question 10

A (iii) < (ii) < (i)

B (iii) < (i) < (ii)

C (i) < (ii) < (iii)

D (ii) < (i) < (iii)

Question 11

Molecules whose mirror image is non- superimposable over them are known as chiral. Which of the following molecules is chiral in nature?

A 2-Bromopropan-2-ol

B 2-Bromopropane

C 1 -Bromobutane

D 2-Bromobutane

Question 12

What should be the correct IUPAC name for diethylbromomethane?

A 1-Bromopentane

B 1-Bromo-1-ethylpropane

C 3-Bromopentane

D 1-Bromo-1,1-diethylmethane

Question 13

The position of -Br in the compound in CH₃CH=CHC(Br)(CH₃)₂ can be classified as

A Secondary

B Vinyl

C Aryl

D Allyl

Question 14

Chlorobenzene is formed by reaction of chlorine with benzene in the presence of AlCl₃. Which of the following species attacks the benzene ring in this reaction?

A [AlCl₄]^–

B AlCl₃

C cl⁺

D cl^–

Question 15

A > >

B > >

C > >

D > >

Question 16

A 1 -bromo-3-chlorocyclohexene

B 3-bromo-1-chlorocyclohexene

C 6-bromo-2-chlorocyclohexene

D 2-bromo-6-chlorocyclohex-1 -ene

Question 17

Which of the following is an example of vic-dihalide?

A Ally l chloride

B Ethylidene chloride

C 1,2-dichloroethane

D Dichloromethane

Question 18

CH₃CH₂CH₂CH₃ â†’CH₃CH₂CH₂CH₂Cl + CH₃CH₂CHClCH₃

A Cl₂ gas in the presence of iron in dark

B Cl₂ gas in dark

C NaCl + H₂SO₄

D Cl₂/UV light

Question 19

A (ii) < (iv) < (iii) < (i)

B (iv) < (iii) < (ii) < (i)

C (i) < (iii) < (iv) < (ii)

D (i) < (ii) < (iii) < (iv)

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Class 12 Chemistry - Chapter 10: Haloalkanes and Haloarenes MCQ Questions