Question

Complete the given equations :
(i) $Cu+8HN{O}_3\to 3Cu(N{O}_3{)}_2+$ W $+4H_{2}O$
(ii) $4Zn+10HN{O}_3\to 4Zn(N{O}_3{)}_2+5H_{2}O+$ X
(iii) $I_2+10HN{O}_3\to$ Y $+10N{O}_2+4H_{2}O$

	W	X	Y
(a)	$2N{O}_2$	$NO$	$5HI{O}_3$
(b)	$2NO$	$N_{2}O$	$2HI{O}_3$
(c)	$N_2$	$N{O}_2$	$HI$
(d)	$N_{2}O$	$N{O}_2$	$3HI$

• A. a
• B. b
• C. c
• D. d

Answer 1

Answer: (B)

(i) $3Cu+8HN{O}_{3(dil).}\to 3Cu(N{O}_3{)}_2+\underset{\text{(W)}}{2NO}+4H_{2}O$
(ii) $4Zn+\underset{\text{(very dilute)}}{10HN{O}_3}(5\%)\to 4Zn(N{O}_3{)}_2+5H_{2}O+\underset{\text{(X)}}{N_{2}O}$
(iii) $I_2+10HN{O}_3\to \underset{\text{(Y)}}{2HI{O}_3}+10N{O}_2+4H_{2}O$