Question

Match L ist-I with List-II.

List I		List II
a	$2SO_2(g) + O_2(g) \to 2SO_3(g)$	i	Acid rain
b	$HOCl(g) \ce{->[h\nu]} \overset{.}{O}H + \overset{.}{C}l$	ii	Smog
c	$CaCO_3 + H_2SO_4 \to CaSO_4 + H_2O + CO_2$	iii	Ozone depletion
d	$NO_2 (g) \ce{->[h\nu]}NO(g) + O(g) $	iv	Tropospheric pollution

Choose the correct answer from the options given below.

• A. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
• B. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
• C. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
• D. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)

Answer 1

Answer: (C)

(a) $2 SO _{2}( g )+ O _{2}( g ) \rightarrow 2 SO _{3}( g ) \ldots$ Tropospheric pollution
(b) $HOCl ( g ) \xrightarrow{ hv } H \dot{ O }+\dot{ C } l \ldots$ Ozone depletion
(c) $CaCO _{3}+ H _{2} SO _{4} \longrightarrow CaSO _{4}+ H _{2} O + CO _{2} \ldots$ Acid rain
(d) $NO _{2}( g ) \xrightarrow{ hv } NO ( g )+ O ( g ) \ldots$ Photo chemical smog