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MEDIUMMCQ SINGLEJEE Mains ChemistryOrganic ChemistryHydrocarbonsPhysical & Chemical Properties of Alkenes

In the following reaction, A and B, respectively are

A.C2H4, alc. KOH/✓ Correct
B.C2H5Cl, aq. KOH/
C.CH3OH, aq. KOH/
D.C2H2, PBr3
Explanation

We know that alkene on reaction with HBr gives addition product. 2 2 3 2 2 2 CH CH HBr CH CH Br CH CH KOH/ -> -> This addition product on heating with potassium hydroxide gives the alkene again as shown.

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