300+ TOP MCQs on Environmental Chemistry and Answers

NEET  Chemistry is the very imporatant paper in the Medical Entrance EXAM. So these NEET Chemistry MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Chemistry objective questions on air pollution. NEET Chemistry Environmental Chemistry Multiple Choice Questions

MCQs on Environmental Chemistry :

1. Photochemical smog normally does not contain
(A) Chlorofluorocarbons
(B) Peroxyacetyl nitrate
(C) Ozone
(D) Acrolein

Answer

Answer: (a)

2. Depletion of the ozone layer is caused due to
(A) Ferrocene
(B) Fullerenes
(C) Freons
(D) Polyhalogens

Answer

Answer: (c)

3. Find the incorrect statement
(A) BOD value of clean water is less than 5 ppm
(B) Drinking water pH should be between 5.5-9.5
(C) carbon, sulphur and nitrogen oxides are the most widespread air pollutants
(D) dissolved oxygen concentration below 5 ppm is ideal for the growth of fish

Answer

Answer: (d)

4. Find the secondary pollutant among these
(A) PAN
(B) N₂O
(C) SO₂
(D) CO₂

Answer

Answer: (a)

5. The reaction responsible for the radiant energy of the Sun is
(A) nuclear fission
(B) nuclear fusion
(C) chemical reaction
(D) combustion

Answer

Answer: (b)

6. Alum’s capacity to purify water is due to
(A) softens hard water
(B) pathogenic bacteria get destroyed
(C) impurities’ coagulation
(D) it improves taste

Answer

Answer: (c)

7. The coldest region of the atmosphere
(A) Troposphere
(B) Thermosphere
(C) Stratosphere
(D) Mesosphere

Answer

Answer: (d)

8. Which of the oxide of nitrogen is not a common pollutant?
(A) N₂O₅
(B) N₂O
(C) NO
(D) NO₂

Answer

Answer: (a)

9. The compound essential for the process of photosynthesis has this element
(A) Ca
(B) Ba
(C) Fe
(D) Mg

Answer

Answer: (d)

10. In the air, N₂ and O₂ occur naturally but they do not react to form oxides of nitrogen because
(A) oxides of nitrogen are unstable
(B) catalyst is required for the reaction
(C) the reaction is endothermic
(D) N₂ and O₂ do not react with each other

Answer

Answer: (c)