The reaction $R-CH=CH_2 \xrightarrow{Na/NH_3, C_2H_5OH} R-CH_2CH_3$ is known as:

Which one of the following alkenes when treated with $HCl$ yields majorly an anti-Markovnikov product?

Which of the following compounds will give $3, 5-$dimethyl$-6-$oxooctanal on reductive ozonolysis?

What is the product obtained when the ozonolysis of $CH_2 = CH_2$ is followed by reduction with $LiAlH_4$?

$I$. $(CH_3)_2 C=CH_2 \xrightarrow{KMnO_4 / H^{+}} X + CO_2 + H_2 O$
$II$. $CH_3-CH=CH-CH_3 \xrightarrow{KMnO_4 / H^{+}} Y$
The functional groups in $X$ and $Y$ are respectively

The reaction conditions used for converting $1, 2-$dibromoethane to ethene are