Chemistry

Problem

	<b>Column-I</b>	<b>Column-II</b>
	(A) $(\text{NH}_4)_2\text{Cr}_2\text{O}_7$ <br>(B) $\text{FeSO}_4$ <br>(C) $\text{Mg}(\text{HCO}_3)_2$ <br>(D) $\text{NH}_4\text{NO}_3$	(P) Gives $\text{N}_2\text{O}$ on heating<br>(Q) Gives $\text{CO}_2$ on heating<br>(R) Gives $\text{SO}_2$ and $\text{SO}_3$ on heating<br>(S) Gives $\text{N}_2$ on heating