$CH_3-C(OH)(CH_3)-CH_3 \xrightarrow[cool]{Na_2Cr_2O_7} (P)$; Product $(P)$ in the reaction is

An alcohol $X$ $(C_5H_{12}O)$ when reacted with conc. $HCl$ and anhydrous $ZnCl_2$ produces turbidity instantly. The alcohol $X$ can be prepared from which of the following reactions?

Which statement is not correct about alcohol?

Alcohols combine with acetylene in the presence of mercury compounds as catalyst to form

Product $(B)$ is

Product $(B)$ of the given reaction is