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Question

Consider the following reaction,
EthanolPBr3−−Xalc.KOH−−−−−Y(i)H2SO4room temperature−−−−−−−−−−−−−−−−(ii)H2O,heatZ;
Product Z is:

A
CH2=CH2
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B
CH3CH2OCH2CH3
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C
CH3CH2OSO3H
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D
CH3CH2OH
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Solution

The correct option is D CH3CH2OH
PBr3 will give SN2 reaction.
C2H5OHPBr3C2H5Br(X)

Alc.KOH will give elimination reaction and forms the double bond
C2H5BrAlc.KOHC2H4(Y)

H2SO4,H3O+ will give electrophilic addition reaction,
C2H4H+,OHC2H5OH(Z)

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