1.

But-2-yne on reaction with sodium in liquid ammonia produces

Answer»

butyne
trans-2-butene
cis-2-butene
no reaction

Solution :When there is no acidic HYDROGEN in alkyne (i.e. "absence of"=-=CH) Na//Liq.NH_(3)` ACTS as a reducing agent
`Na+NH_(3) to NaNH_(3)+(1)/(2)H_(2)`
It REDUCES alkyne to trans-alkene. But-2-yne will give trans-2-butene


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