Living in the atmosphere of CO is dangerous because it : 

1. Combines with Opresent inside to form CO2

2. Reduces organic matter of tissues.

3. Combines with haemoglobin and makes it incapable to absorb oxygen.

4. Dilutes the blood.

Subtopic:  Air Pollution - Smog |
 94%
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The reaction/s involved during the formation of photochemical smog are:

\(1. \space NO_2(g) \rightarrow NO(g) + \stackrel{\cdot}{O(g)}\)

\(2. \stackrel{\cdot}{O(g)} + O_2(g) \rightarrow O_3(g)\)

\(3.\space O_3(g) + NO(g) \rightarrow NO_2(g) + O_2(g)\)

4. All of the above

Subtopic:  Air Pollution - Smog |
 89%
From NCERT
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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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The gas that damages the ozone layer is -

1. CFCs 

2. CO2

3. CH

4. SO2

Subtopic:  Air Pollution - Ozone |
 93%
From NCERT
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Ozone is a very toxic gas and a strong oxidizing agent. It is still useful for life on earth :

1. because it traps harmful UV-rays.

2. because it balances global warming.

3. because it traps harmful X-rays.

4. because it  traps harmful γ-rays.

Subtopic:  Air Pollution - Ozone |
 92%
From NCERT
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Ozone depletion occurs in : 

1. Tropospheric pollution.

2. Stratospheric  pollution.

3. Air pollution.

4. Photochemical smog.

 

Subtopic:  Air Pollution - Ozone |
 83%
From NCERT
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Acid rain occurs due to the presence of : 

1. SO2 in the atmosphere

2. NH3  in the atmosphere

3. CO2  in the atmosphere

4. N2O  in the atmosphere

Subtopic:  Air Pollution - Acid Rain |
 92%
From NCERT
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Match the terms given in Column I with the compounds given in Column II.

Column I Column II
A. Acid rain 1. CHCl2-CHF2
B. Photochemical smog 2. CO
C. Combination with hemoglobin 3. Unsaturated hydrocarbons
D. Depletion of the ozone layer 4. SO2

Codes

A B C D
1. 4 2 3 1
2. 1 2 3 4
3. 4 3 2 1
4. 4 1 3 2
Subtopic:  Air Pollution - Acid Rain |
 88%
From NCERT
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Pollution that occurs in the lowest layer of the atmosphere is :

1. Stratosphere pollution.

2. Ozone layer pollution.

3. Air pollution.

4. Troposphere pollution.

Subtopic:  Air Pollution - Acid Rain |
 78%
From NCERT
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Major component of acid rain is : 

1. HNO3 

2. H2SO4

3. HCl

4. H2CO3

Subtopic:  Air Pollution - Acid Rain |
 70%
From NCERT
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