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

Reaction of $tert.-$butyl alcohol with hot $Cu$ at $350 \, ^oC$ produces

Amongst the following,the major product of the given chemical reaction is $.....$ .

Alkene $X$ $\xrightarrow[\Delta]{KMnO_4}$ (Butan$-2-$one) $+$ (Pentanoic acid). $X$ is

Identify the correct statements with respect to $cis/trans$-but$-2$-ene from the following:
$I$. $cis$-but$-2$-ene is more polar than $trans$-but$-2$-ene
$II$. Melting point of $cis$-but$-2$-ene is greater than that of $trans$-but$-2$-ene
$III$. Boiling point of $cis$-but$-2$-ene is greater than that of $trans$-but$-2$-ene
Correct answer is

The final product formed by the ozonolysis of compound $RCH=CR_2$ is