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Environmental Chemistry

Short Answer Type

51. Explain tropospheric pollution in 100 words.

463 Views

Long Answer Type

52.

Discuss pollution caused by CO.
Or
What are different sources of CO pollution? What are the effects of continuous exposure to CO on human beings?

113 Views

Short Answer Type

53.

Explain giving reasons: There presence of CO reduces the amount of haemoglobin available in the blood for carrying oxygen to the body cells.

128 Views

Long Answer Type

54.

Discuss measures for the control of CO pollution.

112 Views

Short Answer Type

55.
Carbonmonoxide gas is more dangerous than carbondioxide. Why?

Carbon monoxide as pollutant binds itself to haemoglobin (present in red blood corpuscles of the blood) much more strongly than oxygen to form a stable compound known as carboxyhaemoglobin (Hb – CO).

The presence of CO, therefore, reduces the amount of haemoglobin available in the blood for transport of inhaled oxygen to various part of the body. Thus CO causes obstruction in the normal functioning of blood which further produces disorders in normal metabolism due to less O₂level. Hence, the presence of CO in the blood causes mental retardation and even causes death.

On the other hand, the increasing concentration of carbon dioxide can cause mild narcotic effects and also change climatic conditions especially by raising the global temperature (greenhouse effect). Hence carbon monoxide gas is more dangerous than carbon dioxide.

194 Views

Long Answer Type

56.

Discuss sources and sinks of CO₂ in the atmosphere.
Or
Discuss the role of CO₂ as a pollutant.
Or
Carbon dioxide is inert and harmless gas, yet it is considered to be a serious pollutant. Explain.

148 Views

57.

Discuss air pollution caused by oxides of nitrogen.
Or
What are the principal environmental effects of NO₂?
Or
Name the oxide of nitrogen present in the atmosphere. What are the sources and sinks of NO_x?

115 Views