Isopropyl alcohol is obtained by reacting which of the following alkenes with conc. $H_2SO_4$ and $H_2O$?

The major product $(P)$ formed in the reaction below is: $HC \equiv C-CH_2-CH=CH_2 \xrightarrow[CCl_4, 253 \ K]{Br_2(1 \ mol)} P$

$CH_2 = CH_2 \xrightarrow[KOH / H_2O]{KMnO_4} X$. The product $X$ in the above reaction is:

The major product of the following reaction is

Deviation from Markownikoff's rule occurs in the presence of

Identify the major product $B$ in the given sequence of reactions:
$CH_3-C \equiv CH$ $\xrightarrow{H_2 / Pd-C} A$ $\xrightarrow{(C_6H_5CO)_2O_2 / HBr} B$