How many isomeric alkynes on catalytic hydrogenation gives `3`-Ethyl-`4`-methylheptane ?

Answer

3

Explanation

`HC-=C-CH_(2)-underset(CH_(3))underset(|)(CH)-underset(CH_(2)-CH_(3))underset(|)(CH)-CH_(2)-CH_(3)` " " `CH_(3)-C-=C-underset(CH_(3))underset(|)(CH)-underset(CH_(2)-CH_(3))underset(|)(CH)-CH_(2)-CH_(3)`
`CH_(3)-CH_(2)-CH_(2)-underset(CH_(3))underset(|)(CH)-underset(CH_(2)-CH_(3))underset(|)(CH)-C-=-CH`