What is the product of the mild oxidation of glycerol using $H_2O_2/FeSO_4$?

Given below are two statements.
Statement $I$: On heating with $KHSO_4$,glycerol is dehydrated and acrolein is formed.
Statement $II$: Acrolein has fruity odour and can be used to test glycerol's presence.
Choose the correct option.

The major product $[C]$ of the following reaction sequence will be

Which of the following reactions do not represent the major product of given Birch reductions?

The enolic form of acetone contains

The hottest region of the Bunsen flame shown in the figure below is: