Dalda is prepared from oils by

The conversion shown below can be brought about by?

What is the product formed when $CH_2 = CH(CH_2)_2COOH$ reacts with $HBr$?

The product $(A)$ of the given oxymercuration-demercuration reaction is:

The reaction of $4$-methyloct$-1-$ene $(P, 2.52 \ g)$ with $HBr$ in the presence of $(C_6H_5CO_2)_2O_2$ gives two isomeric bromides in a $9:1$ ratio,with a combined yield of $50 \%$. Of these,the entire amount of the primary alkyl bromide was reacted with an appropriate amount of diethylamine followed by treatment with aqueous $K_2CO_3$ to give a non-ionic product $S$ in $100 \% $ yield. The mass (in $mg$) of $S$ obtained is. . . . . . . [Use molar mass (in $g \ mol^{-1}$) : $H=1, C=12, N=14, Br=80$]

Which of the following alkenes reacts fastest with $H_2$ under catalytic hydrogenation conditions?