What is the product obtained from the dehydration of glycerol?

Identify the final product $(B)$ in the following reaction sequence:
$1\text{-bromo-}2\text{-methylcyclobutane}$ $\xrightarrow{\text{alc. KOH}} A$ $\xrightarrow{\text{ozonolysis}} B$

To carry out the given conversions,select the correct option.

The increasing order of carbon-carbon bond length for the following is:

The following reaction takes place in high yields. Use your knowledge of alkene chemistry to predict the product.

The total number of sigma $(\sigma)$ and pi $(\pi)$ bonds present in $\text{hex}-1-\text{en}-4-\text{yne}$ are respectively: