(Paper) Chemistry Objective Type Questions with Answers for the preparation of Engineering Entrance Test : AIEEE, IIT-JEE, CET
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Chemistry Objective Type Questions with Answers for the preparation of
Engineering Entrance Test : AIEEE, IIT-JEE, CET
(Important For 10+1 & 10+2 Science Students)
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