Consider the following reactions. Which of these reactions proceed via a free radical mechanism?

Which of the following is among the major products of the reaction of $(E)-3$-methylpent$-2$-ene with $BH_3$ in $THF$ followed by the addition of $H_2O_2/HO^{-}$?

Match the reactions in List-$I$ with their major products in List-$II$:

List-$I$ (Reaction)	List-$II$ (Major product)
$A. CH_3-C \equiv CH \xrightarrow{H_2O, Hg^{2+}/H^+, 333K}$	$I. CH_3-CH(OH)-CH_3$
$B. CH_3COONa \xrightarrow{H_2O, Pt, \text{electrolysis}}$	$II. CH_3-CO-CH_3$
$C. CH_3-CH=CH_2 \xrightarrow{H_2O/H^+}$	$III. CH_3-CH(OH)-CH_2OH$
$D. CH_3-CH=CH_2 \xrightarrow{H_2O, \text{dil. } KMnO_4, 273K}$	$IV. CH_3-CH_3$
	$V. CH_4$

What is the decreasing order of acidic strength for ethane $(I)$,ethene $(II)$,ethyne $(III)$,and propyne $(IV)$?

Propane can be separated from propene by using......

Which of the following would not rearrange to a more stable form?