Chemistry Entrance Test
Chemistry Objective Type Questions with Answers for the preparation of Engineering Entrance Test like AIEEE, IIT-JEE, CET etc.
Test 7
(1) Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of
(a) insolubility
(b) instability
(c) inductive effect
(d) steric hindrance
Answer (d) steric hindrance
(2) Reaction of one molecule of HBr with one molecule of 1,3-butadiene at 40 Degree C gives predominantly
(a) 3-bromobutene under kinetically controlled conditions
(b) 1-bromo-2-butene under thermodymically controlled conditions
(c) 3-bromobutene under thermodynamically controlled conditions
(d) 1-bromo-2-butene under kinetically controlled conditions
Answer (b) 1-bromo-2-butene under thermodymically controlled conditions
(3) Among the following acids which has the lowest pKa value?
(a) CH3COOH
(b) HCOOH
(c) (CH3)2COOH
(d) CH3CH2COOH
Answer (b) HCOOH
(4) Which one of the following methods is neither meant for the synthesis nor for separation of amines?
(a) Hinsberg method
(b) Hofmann method
(c) Wurtz reaction
(d) Curtius reaction
Answer (c) Wurtz reaction
(5) Which of the following is fully fluorinated polymer?
(a) Neoprene
(b) Teflon
(c) Thiokol
(d) PVC
Answer (b) Teflon
(6) Of the five isomeric hexanes, the isomer which can give two monochlorinated compounds is
(a) n-hexane
(b) 2, 3-dimethylbutane
(c) 2,2-dimethylbutane
(d) 2-methylpentane
Answer (b) 2, 3-dimethylbutane
(7) Alkyl halides react with dialkyl copper reagents to give
(a) alkenes
(b) alkyl copper halides
(c) alkanes
(d) alkenyl halides
Answer (c) alkanes
(8) Acid catalyzed hydration of alkenes except ethene leads to the formation of
(a) primary alcohol
(b) secondary or tertiary alcohol
(c) mixture of primary and secondary alcohols
(d) mixture of secondary and tertiary alcohols
Answer (d) mixture of secondary and tertiary alcohols
(9) Amongst the following the most basic compound is
(a) benzylamine
(b) aniline
(c) acetanilide
(d) p-nitroaniline
Answer (a) benzylamine
(10) Which types of isomerism is shown by 2,3-dichlorobutane?
(a) Diastereo
(b) Optical
(c) Geometric
(d) Structural
Answer (b) Optical
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Chemistry Objective Type Questions with Answers for the preparation of Engineering Entrance Test like AIEEE, IIT-JEE, CET etc.
Test 7
(1) Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of
(a) insolubility
(b) instability
(c) inductive effect
(d) steric hindrance
Answer (d) steric hindrance
(2) Reaction of one molecule of HBr with one molecule of 1,3-butadiene at 40 Degree C gives predominantly
(a) 3-bromobutene under kinetically controlled conditions
(b) 1-bromo-2-butene under thermodymically controlled conditions
(c) 3-bromobutene under thermodynamically controlled conditions
(d) 1-bromo-2-butene under kinetically controlled conditions
Answer (b) 1-bromo-2-butene under thermodymically controlled conditions
(3) Among the following acids which has the lowest pKa value?
(a) CH3COOH
(b) HCOOH
(c) (CH3)2COOH
(d) CH3CH2COOH
Answer (b) HCOOH
(4) Which one of the following methods is neither meant for the synthesis nor for separation of amines?
(a) Hinsberg method
(b) Hofmann method
(c) Wurtz reaction
(d) Curtius reaction
Answer (c) Wurtz reaction
(5) Which of the following is fully fluorinated polymer?
(a) Neoprene
(b) Teflon
(c) Thiokol
(d) PVC
Answer (b) Teflon
(6) Of the five isomeric hexanes, the isomer which can give two monochlorinated compounds is
(a) n-hexane
(b) 2, 3-dimethylbutane
(c) 2,2-dimethylbutane
(d) 2-methylpentane
Answer (b) 2, 3-dimethylbutane
(7) Alkyl halides react with dialkyl copper reagents to give
(a) alkenes
(b) alkyl copper halides
(c) alkanes
(d) alkenyl halides
Answer (c) alkanes
(8) Acid catalyzed hydration of alkenes except ethene leads to the formation of
(a) primary alcohol
(b) secondary or tertiary alcohol
(c) mixture of primary and secondary alcohols
(d) mixture of secondary and tertiary alcohols
Answer (d) mixture of secondary and tertiary alcohols
(9) Amongst the following the most basic compound is
(a) benzylamine
(b) aniline
(c) acetanilide
(d) p-nitroaniline
Answer (a) benzylamine
(10) Which types of isomerism is shown by 2,3-dichlorobutane?
(a) Diastereo
(b) Optical
(c) Geometric
(d) Structural
Answer (b) Optical
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Thanks for giving such a useful information
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