Haloalkanes and Haloarenes  MCQs

MCQs of Haloalkanes and Haloarenes

Showing 101 to 110 out of 112 Questions
7 8 9 10 11 12
101.
What are the compounds 'A' and 'B' in the following reaction ? CH3CH2OH →ethanol -KCl, -H2OKOH A →CCl4Br2 B
(a) A = CH2 = CH2,     B : BrCH2-CH2Br
(b) A = BrCH = CHBr,     B : CH2 = CH2
(c) A = BrCH2-CH2Br,     B : CH2 = CH2
(d) A = BrCH = CHBr,     B : CH ≡ CH
Answer:

Option (a)

102.
Which is the correct priority order ?
(a) -COOH, CONH2, -CHO , -COCH3
(b) -COOH, CONH2, -COCH3 , -CHO
(c) -COOH, COCH3, -CONH2 , -CHO
(d) -COCH3, -CONH2 , -COOH, -CHO
Answer:

Option (b)

103.
Arrange the following halides in increasing order SN2 reactivity : CH3Br, CH3CH2Cl, CH3Cl, (CH3)2CHCl
(a) (CH3)2CHCl > CH3CH2Cl > CH3Cl > CH3Br
(b) (CH3)2CHCl < CH3CH2Cl < CH3Cl < CH3Br
(c) CH3CH2Cl > CH3Cl > CH3Br > (CH3)2CHCl
(d) CH3CH2Cl < CH3Cl < CH3Br < (CH3)2CHCl
Answer:

Option (b)

104.
Arrange the following halides in increasing order of SN2 reactivity : (i) iso-buryl halide (ii) neo-pentyl halide (iii) n-propyl halide
(a) (iii) < (i) < (ii)
(b) (i) < (iii) < (ii)
(c) (i) < (ii) < (iii)
(d) (ii) < (i) < (iii)
Answer:

Option (d)

105.
Which branched chain isomer of the hydrocarbon with molecular mass 72 u gives only one isomer of mono substituted alkyl halide ?
(a) Neopentane
(b) Isohexane
(c) Neohexane
(d) Tetiary butyl chloride
Answer:

Option (a)

106.
What is DDT among the following ?
(a) A fertilizer
(b) Biodegradable pollutant
(c) Non-biodegradable pollutant
(d) Greenhouse gas
Answer:

Option (c)

107.
An acyl halide is formed when PCl5 reacts with
(a) amide
(b) alcohol
(c) acid
(d) ester
Answer:

Option (c)

108.
The major product obtained on treatment of CH3CH2CH(F)CH3 with CH3O-/CH3OH is
(a) CH3CH2CH(OCH3)CH3
(b) CH3CH = CHCH3
(c) CH3CH2CH = CH2
(d) CH3CH2CH2CH2CH2OCH3
Answer:

Option (b)

109.
A : Benzyl bromide when kept in acetone water it produces benzyl alochol. R : The reaction follows SN2 mechanism.
(a) a
(b) b
(c) c
(d) d
Answer:

Option (a)

110.
A : Rate of reaction of alkyl halide in Williamson's synthesis reaction is 1°R X > 2°R X > 3°R X

R : It is a type of bimolecular substitution reaction [SN2]

(a) a
(b) b
(c) c
(d) d
Answer:

Option (a)

Showing 101 to 110 out of 112 Questions
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