Question

Choose the correct answer :

(a) The nitrate salt which does not give a mixture of $N{O}_2$ and $O_2$ on heating is :

(i) $AgN{O}_3$, (ii) $KN{O}_3$,

(iii) $Cu(N{O}_3{)}_3$, (iv) $Zn(N{O}_3{)}_2$.

(b) The chemical used in the brown ring test is :

(i) $CuS{O}_4$, (ii) $FeS{O}_4$

(iii) $F{e}_2(S{O}_4{)}_3$ (iv) $ZnS{O}_4$.

(c) Lead nitrate decomposes on heating to give :

(i) NO, (ii) $N_{2}O,$

(iii) $N{O}_2$ (iv) $N_2{O}_5$.

Answer 1

(a) (ii) $KN{O}_3$
(b) (ii)
(c) (iii)