Questions & Answers

Carbon monoxide is the major pollutant of
A)Water
B)Air
C)Noise
D)Soil

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Hint: Pollution is any unwanted molecules which are added to air, water, and soil causes pollution. The pollutant is the toxic substances which disturbs the life of both flora and fauna. Carbon monoxide is one such pollutant which disturbs the oxygen carrying capacity of blood.

Complete answer:
To solve this question, we must know about the pollutant and its types.

The pollutant causes hazardous effects to the life of organisms. The pollution is categorised into different types based on the source.
Water pollution- It is addition of toxic pollutants to the water. The pollutants can be industrial and household waste.
Air pollution- It is the addition of harmful substances to the air. Some of the major air pollutants are smoke from the industries, vehicles, and greenhouse gases. The incomplete combustion of fuel leads to production of a neutral oxide of carbon called the carbon monoxide. This carbon monoxide has a very high binding affinity with haemoglobin in our blood. This reduces the oxygen carrying capacity of the haemoglobin as a result of which instead of forming oxy-hemoglobin, carboxyhemoglobin is formed which can result in hypoxia.
Noise pollution-The sound greater than 70 dB causes noise pollution. It affects sleep and also mental health.
Soil- It is an addition of harmful substances to the soil. The unwanted substances can be manure and fertilizer, plastics and other non biodegradable substances.

Hence, the correct answer is option (B)

Note: Other sources of air pollution are chlorofluorocarbons emitted from the jet engines. The air pollution leads to an increase in greenhouse gases which results in global warming. The air pollution is responsible for the depletion of the ozone layer.