When two elements combine to form more than one compound,the masses of one element that combine with a fixed mass of the other element are in a simple whole number ratio.
$(a)$ Is the statement given above correct?
$(b)$ If 'yes',which law does it follow?
$(c)$ Give an example corresponding to this law.

(N/A) Yes,the statement is correct.
$(b)$ It follows the Law of Multiple Proportions.
$(c)$ Example: Hydrogen and oxygen combine to form water $(H_2O)$ and hydrogen peroxide $(H_2O_2)$.
For $H_2O$: $2 \ g$ of $H$ combines with $16 \ g$ of $O$.
For $H_2O_2$: $2 \ g$ of $H$ combines with $32 \ g$ of $O$.
The masses of oxygen ($16 \ g$ and $32 \ g$) that combine with a fixed mass of hydrogen $(2 \ g)$ bear a simple ratio of $16:32$,which is $1:2$.