Ethylene reacts with bromine to form

The correct statement$(s)$ for the following addition reactions is(are):
$(i)$ $trans-but-2-ene \xrightarrow{Br_2/CHCl_3} M \text{ and } N$
(ii) $cis-but-2-ene \xrightarrow{Br_2/CHCl_3} O \text{ and } P$
[$A$] ($M$ and $O$) and ($N$ and $P$) are two pairs of diastereomers
[$B$] Bromination proceeds through trans-addition in both the reactions
[$C$] $O$ and $P$ are identical molecules
[$D$] ($M$ and $O$) and ($N$ and $P$) are two pairs of enantiomers

What are the products obtained from the hydroboration-oxidation of propene and its hydration in the presence of dilute sulfuric acid,respectively?

Dehydration of ethanol gives

The metal used for the de-bromination reaction of $1, 2$-dibromoethane is:

The product of the following reaction is:
$CH_3CH_2CH_2CH=CH_2 \xrightarrow[(ii) H_2O_2, OH^-]{(i) BH_3/THF} \text{Product}$