Section-D: Comprehension Type
Five isomeric alkenes (all positional isomers) A to E, all on catalytic hydrogenation with H2/Pt gives the same smallest optically active alkane F. Also only A and B are optically active and A liberate more heat on hydrogenation than B. C show geometrical isomerism but D and E do not show any stereo isomerism. Also E evolves more heat on hydrogenation than D. Answer the following three questions based on the above information.
Alkene liberating least heat on hydrogenation is