The major product of the following reaction is:

The ozonolysis products of an olefin are $CHO-CHO$ and $CHO-CH_2-CH_2-CHO$. The olefin is:

$A$ compound $X$ absorbs $2$ moles of hydrogen and $X$ upon oxidation with $KMnO_4 \mid H^{+}$ gives the products shown below:
$CH_3-CO-CH_3$,$CH_3-COOH$ and $CH_3-CO-CH_2-CH_2-COOH$.
The total number of $\sigma$ bonds present in the compound $X$ is . . . . . .

Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of:

What is the major product of the following reaction?

Which of the following products are formed upon the addition reaction of $DCl$ with $3-methyl-1-butene$?