JEE Main · 2021 · 31 Aug 2021 · Shift 2 · Environmental Chemistry

The deposition of

X

and

Y

on ground surfaces is referred as wet and dry depositions, respectively, X and Y are :

(A) $X =$ Ammonium salts, $Y = SO_{2}$ ✓ Correct
(B) $X = SO_{2}, Y =$ Ammonium salts
(C) $X =$ Ammonium salts, $Y = CO_{2}$
(D) $X = CO_{2}, Y = SO_{2}$

Answer: (A)

Solution

Wet deposition removes pollutants from the atmosphere through rain, snow or fog, which washes down water-soluble species such as ammonium salts. Dry deposition is the direct settling of gases and particles onto surfaces without precipitation, as happens with sulphur dioxide gas. Thus X is ammonium salts and Y is

S O_{2}

JEE Main · 2021 · 31 Aug 2021 · Shift 2 · Single correct option

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