Chemistry MCQs

Page No. 20

Ethylene epoxide treated with Grignards reagent followed by acid hydrolysis yield __________________?


aprimary alcohol


bsecondary alcohol


ctertiary alcohol


ddihydric alcohol


View Answer primary alcohol

Which one of the following reactants will be required to form straight chain alcohol by using Grignard reagent________________?


aformaldehyde


bketone


cethylene epoxide


dBoth A and C


View Answer Both A and C

Alkyl halides are considered to be very reactive compounds towards nucleophile because_________________?


athey have an electrophilic carbon


bthey have an electrophilic carbon & a good leaving group


cthey have an electrophilic carbon & a bad leaving group


dthey have a nucleophilic carbon & a good leaving group



For which mechanisms the first step involved is the same ?


aE1 + E2


bE2 + SN2


cE1 and SN1


dSN1 and SN2


View Answer E1 and SN1

SN2 reaction can be best carried out with__________________?


aprimary alkyl halide


bsecondary alkyl halide


ctertiary alkyl halide


dall


View Answer primary alkyl halide

When CO2 is made to react with ethyl magnesium iodide followed by acid hydrolysis the product formed is _________________?


apropane


bpropanoic acid


cpropanal


dpropanol


View Answer propanoic acid

When two moles of ethyl chloride react with two moles of sodium in the presence of ether what will be formed ?


a2 moles of ethane


b1 mole of ethane


c2 moles of butane


d1 mole of butane


View Answer 1 mole of butane

Which alkyl halide out of the following may follow both SN1 and SN2 mechanism ?


aCH3-X


b(CH3)3 C-CH2 – X


c(CH3)2 CH – X


d(CH3)3 C – X


View Answer (CH3)2 CH – X

Which one is not a nucleophile ?


aC2H5O-


bSCN-


cNH3


dH3C+


View Answer H3C+

Which alkyl halide has the highest reactivity for a particular alkyl group ?


aR-F


bR-C


cR-Br


dR-I


View Answer R-I

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