BY←2−Butyne+H2X−→A. A and B are geometrical isomers, A is more symmetrical than B. Then X and Y are
Na/ NH3(Liquid) & Lindlar's catalyst
Lindlar's catalyst & Na / NH3(Liquid)
Na / NH3(Liquid) & Na / H2O(Liquid)
Lindlar's catalyst & Na / H2O(Liquid)
A is trans 2 - butene B is cis 2 - butane
XNa(Excess)−−−−−−−→YCH3I(Excess)−−−−−−−−−→ Z. 'Z' forms isomer on hydrogenatio with