List of top Chemistry Questions on Alkynes asked in AP EAPCET

What are X and Y in the following reaction sequence? $Ethanal \rightarrow C_4H_8 \xrightarrow{Br_2/CCl_4} X \xrightarrow{alc. KOH, NaNH_2} Y$

The gaseous mixture used for welding of metals is

Calcium carbide \(+\,D_2O \rightarrow X + Ca(OD)_2\). The hybridization of carbon atom/s in \(X\)