1. Which of the following is not a pollutant?
1. Which of the following is not a pollutant?
The correct option is B water vapour
Explanation for correct option:
(B) Normally, people believe that water vapour is the primary cause of the present global warming. Increased water vapour, on the other hand, does not contribute to global warming. Instead, it is a result of it. The warmth induced by other greenhouse gases is accelerated by increased water vapour in the atmosphere. So, this is the correct option.
Explanation for incorrect option:
(A) Carbon monoxide (CO) is an odourless, transparent gas. Carbon monoxide is often found in smoke and exhaust gases. Carbon monoxide is a frequent contaminant in the air. So, this is not the correct option.
(C) Dust is considered pollution since it contains suspended particles. Dust inhalation can cause a variety of problems, including allergic asthma, bronchitis, a cold, or a cough. It decreases the light intensity. Dust particles fall on leaves, blocking stomata and reducing gaseous exchange. So, this is not the correct option.
(D) Particle pollution, sometimes known as "soot," is one of the most dangerous types of air pollution. So, this is not the correct option.
Conclusion: Thus, option (B) is the correct answer.
water vapour
Explanation for correct option:
(B) Normally, people believe that water vapour is the primary cause of the present global warming. Increased water vapour, on the other hand, does not contribute to global warming. Instead, it is a result of it. The warmth induced by other greenhouse gases is accelerated by increased water vapour in the atmosphere. So, this is the correct option.
Explanation for incorrect option:
(A) Carbon monoxide (CO) is an odourless, transparent gas. Carbon monoxide is often found in smoke and exhaust gases. Carbon monoxide is a frequent contaminant in the air. So, this is not the correct option.
(C) Dust is considered pollution since it contains suspended particles. Dust inhalation can cause a variety of problems, including allergic asthma, bronchitis, a cold, or a cough. It decreases the light intensity. Dust particles fall on leaves, blocking stomata and reducing gaseous exchange. So, this is not the correct option.
(D) Particle pollution, sometimes known as "soot," is one of the most dangerous types of air pollution. So, this is not the correct option.
Conclusion: Thus, option (B) is the correct answer.
