JEE Questions for Chemistry Haloalkanes And Haloarenes Quiz 4 - MCQExams.com

Which of the following is not true for the hydrolysis of t-butyl bromide with aqueous NaOH?
  • Reaction occurs through the SN 1 mechanism
  • The intermediate formed is a carbocation
  • Rate of the reaction doubles when the concentration of alkali is doubled
  • Rate of the reaction doubles when the concentration of t-butyl bromide is doubled
Which one of the following forms propane nitrile as the major product?
  • Ethyl bromide + alcoholic KCN
  • Propyl bromide + alcoholic KCN
  • Propyl bromide + alcoholic AgCN
  • Ethyl bromide + alcoholic AgCN
An alkyl halide (RX) reacts with Na to form 4, 5-diethyloctane. Compound RX is
  • CH3 (CH2)3 Br
  • CH3 (CH2)2 CH(Br)CH2 CH3
  • CH3 (CH2 )3 CH(Br)CH3
  • CH3(CH2)5 Br
  • CH3 Br
t-butyl chloride preferably undergo hydrolysis by
  • SN1 mechanism
  • SN2 mechanism
  • Any of (and (2)
  • None of the above
Predict the product,
Chemistry-Haloalkanes and Haloarenes-4427.png

  • Chemistry-Haloalkanes and Haloarenes-4428.png
  • 2)
    Chemistry-Haloalkanes and Haloarenes-4429.png

  • Chemistry-Haloalkanes and Haloarenes-4430.png

  • Chemistry-Haloalkanes and Haloarenes-4431.png

Chemistry-Haloalkanes and Haloarenes-4432.png
  • CH3 CH2 Cl
  • CH3 Cl
  • CH3 CH2 CH2 Cl
  • (CH3)2 CHCl
Match the following columns.
Chemistry-Haloalkanes and Haloarenes-4434.png
  • A = 5, B = 3, C = 4, D = 1
  • A = 1, B = 2, C = 3, D = 4
  • A = 3, B = 4, C = 1, D = 2
  • A = 4, B = 1, C = 4, D = 2
In a group of isomeric alkyl halides, the order of boiling points is
  • primary < secondary < tertiary
  • primary > secondary < tertiary
  • primary < secondary > tertiary
  • primary > secondary > tertiary
The conversion of ethyl chloride into diethyl ether takes place by
  • Williamson's synthesis
  • Perkin's reaction
  • Wurtz reaction
  • Grignard reaction
CH3 Br + Nu- → CH3 —Nu + Br- . The decreasing order of the rate of the above reaction with nucleophiles (Nu-) A to D is
[Nu- = (A) PhO- , (B ) AcO- , (C )HO- ], (D)CH3O- )
  • D > C > A > B
  • D > C > B > A
  • A > B > C > D
  • B > D > C > A
The structure of the major product formed in the following reaction is
Chemistry-Haloalkanes and Haloarenes-4435.png

  • Chemistry-Haloalkanes and Haloarenes-4436.png
  • 2)
    Chemistry-Haloalkanes and Haloarenes-4437.png

  • Chemistry-Haloalkanes and Haloarenes-4438.png

  • Chemistry-Haloalkanes and Haloarenes-4439.png

Chemistry-Haloalkanes and Haloarenes-4441.png
  • CH3CN
  • C2H5CN
  • C2H5NH2
  • CH3 NH2
In the following sequence of reactions,
Chemistry-Haloalkanes and Haloarenes-4442.png
  • n-propylamine
  • iso-propylamine
  • ethylamine
  • ethyl methyl amine

Chemistry-Haloalkanes and Haloarenes-4443.png

  • Chemistry-Haloalkanes and Haloarenes-4444.png
  • 2)
    Chemistry-Haloalkanes and Haloarenes-4445.png

  • Chemistry-Haloalkanes and Haloarenes-4446.png

  • Chemistry-Haloalkanes and Haloarenes-4447.png
Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of
  • steric hindrance
  • inductive effect
  • instability
  • insolubility
Ethyl chloride on heating with AgCN forms a compound X. The functional isomer of X is
  • C2H5NC
  • C2H5NH2
  • C2H5CN
  • None of these
When 32.25 g of ethyl chloride is subjected to dehydrohalogenation reaction the yield of the alkene formed is 50%. The mass of the product formed is (atomic mass of chlorine is 35.
  • 14 g
  • 28 g
  • 64.5 g
  • 56 g
  • 7 g
Which of the following applies in the reaction,
Chemistry-Haloalkanes and Haloarenes-4448.png
  • Markownikoff s rule
  • Saytzeff s rule
  • Kharasch effect
  • Hofmann's rule
Identify X and Y in the following sequence :
Chemistry-Haloalkanes and Haloarenes-4449.png
  • X = KCN, Y = LiAlH4
  • X = KCN, Y = H3O+
  • X = CH3 Cl, Y = AlCl3/HCl
  • X = CH3 NH2, Y = HNO2
Identify A and B in the following reactions
Chemistry-Haloalkanes and Haloarenes-4450.png
  • A = C2 H2, B = C2 H6
  • A = C2 H5 Cl, B = C2 H4
  • A = C2 H4 , B = C2H5Cl
  • A = C2H5 Cl, B = C2 H5 Cl
Carbon tetrachloride does not have net dipole moment because of
  • Its planar structure
  • Its regular tetrahedral structure
  • Similar sizes of carbon and chlorine atoms
  • Similar electron affinities of carbon and chlorine
Phosgene is a common name for
  • Phosphoryl chloride
  • Thionyl chloride
  • Carbon dioxide and phosphine
  • Carbonyl chloride
Amongst the C – X bond (where X=Cl, Br, I) the correct bond energy order is
  • C – Cl > C – Br > C – I
  • C – I > C – Cl > C – Br
  • C – Br > C – Cl > C – I
  • C-I > C – Br > C – Cl
The well known insecticide – gammexane is one of the steroisomers of hexachlorocyclohexane. The reagent useful for conversion of benzene into hexa chlorocyclohexane is
  • 3 HCl
  • 3 Cl2(AlCl3)
  • 3 Cl2(ZnCl2)
  • 3 Cl2(hv)
Which one of the following compounds when heated with KOH and a primary amine gives carbylamine test ?
  • CHCl3
  • CH3Cl
  • CH3OH
  • CH3CN
Westrosol is
  • CHCl = CCl2
  • Cl2CF2
  • CHCl2 – CHCl2
  • Cl3C – NO2
The starting substance for the preparation of iodoform is any one of the following, except.
  • CH3CH(OH) CH3
  • CH3CH2OH
  • HCH2OH
  • CH3COCH3
The end product (B) in the following sequence of reactions is
Chemistry-Haloalkanes and Haloarenes-4452.png
  • CH3COOH
  • HCOOH
  • CH3NH2
  • CH3COCH3
The alkyl halide is converted into an alcohol by
  • Addition
  • Substitution
  • Dehydrohalogenation
  • Elimination
The reaction described is
Chemistry-Haloalkanes and Haloarenes-4454.png
  • SE2
  • SN1
  • SN2
  • SNo
0:0:1


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