A) air pollution
B) water pollution
C) radioactive pollution
D) soil pollution
Correct Answer: A
Solution :
The emission of exhaust from automobiles which causes air pollution can be reduced by devices such as positive crank case ventilation valve and catalytic converter. Air pollution is the addition of materials or chemicals into atmosphere in such concentration that they begin to exert adverse effect on human being and other living organisms. Water pollution is the degradation of quality of water due to addition of substances, chemicals or other factor so that the water become unfit for aquatic biota. Soil pollution or land pollution is alteration in soil structure and composition caused by removal or addition of substances which decreases its productivity, quality etc. Radioactive pollution is degradation of environment due to release of \[\alpha \]-particles \[\beta \]-particles, \[\gamma \] rays etc. Which have harmful effect on living beings.
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