Which statement is not true about photochemical smog?
1. Photochemical smog is harmful to humans but has no effect on plants.
2. Plants like Pinus, Juniparus can help in reducing the photochemical smog.
3. Photochemical smog occurs in warm, dry, and sunny climates.
4. Common components of photochemical smog are ozone, nitric oxide, acrolein, formaldehyde, and peroxyacetyl nitrate. 
Subtopic:  Air Pollution - Smog |
 51%
From NCERT
NEET - 2023
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Match List-I with List-II :
List-I List-II
(a) Biochemical oxygen demand (i) Oxidising mixture
(b) Photochemical smog (ii) Polar stratospheric cloud
(c) Classical smog (iii) Organic matter in water
(d) Ozone layer depletion (iv) Reducing mixture
Choose the correct answer from the options given below:
(a) (b) (c) (d)
1. (i) (iv) (ii) (iii)
2. (iii) (iv) (i) (ii)
3. (iii) (i) (iv) (ii)
4. (iv) (iii) (ii) (i)
Subtopic:  Air Pollution - Smog | Water Pollution - Biological Oxygen Demand |
 71%
From NCERT
NEET - 2022
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Match List-1 with List-II

List-I List-II
(a). 2SO2(g)+O2(g)2SO3(g) (i). Acid rain
(b). 
(ii). Smog
(c). CaCO3+H2SO4
CaSO4+H2O+CO2
(iii). Ozone depletion
(d). NO2(g)hvNO(g)+O(g) (iv). Tropospheric pollution

Choose the correct answer from the options given below:

(a). (b). (c). (d).
1. (iv). (iii). (i). (ii).
2. (iii). (ii). (iv). (i).
3. (i). (ii). (iii). (iv).
4. (ii). (iii). (iv). (i).
Subtopic:  Air Pollution - Smog |
 61%
From NCERT
NEET - 2021
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The incorrect statement about carbon monoxide is-

1. It reduces the oxygen-carrying ability of blood.
2. The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.
3. It is produced due to incomplete combustion.
4. It forms carboxyhaemoglobin.

Subtopic:  Air Pollution - Smog |
 86%
From NCERT
NEET - 2020
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