Environmental Chemistry JEE Main PYQs, 2020 to 2023

JEE Main 2023 · 13 Apr · Shift 1 · Water Pollution

1. (A)Statement I is correct but Statement II is incorrect
2. (B)Both the Statements I and II are correct
3. (C)Both the Statements I and II are incorrect
4. (D)Statement I is incorrect but Statement II is correct

Answer: (C)

JEE Main 2023 · 6 Apr · Shift 2 · Soil Pollution

1. (A)Dieldrin, Sodium arsinite, Tetrachloroethene
2. (B)Aldrin, Sodium chlorate, Sodium arsinite
3. (C)DDT, Aldrin
4. (D)Sodium chlorate, DDT, PAN

Answer: (C)

JEE Main 2023 · 31 Jan · Shift 2 · Air Pollution

1. (A)$\mathrm{N}_{2} \mathrm{O}_{5}+\mathrm{H}_{2} \mathrm{O} \rightarrow 2 \mathrm{HNO}_{3}$
2. (B)$2 \mathrm{SO}_{2}+\mathrm{O}_{2}+2 \mathrm{H}_{2} \mathrm{O} \rightarrow 2 \mathrm{H}_{2} \mathrm{SO}_{4}$
3. (C)$4 \mathrm{NO}_{2}+\mathrm{O}_{2}+2 \mathrm{H}_{2} \mathrm{O} \rightarrow 4 \mathrm{HNO}_{3}$
4. (D)$\mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{H}_{2} \mathrm{CO}_{3}$

Answer: (D)