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Environmental Issues

Question

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Select the non-degradable pollutant (s) from the followings

Plastic

Organochlorine pesticides

Heavy metals

Domestic sewage

Solution

A.

Plastic

B.

Organochlorine pesticides

Pollutant is a substance that pollutes water or the atmosphere. It is classified into two types:

(i) Biodegradable pollutants are those that can be decomposed or degrades by microbes. They become a part of biogeochemical cycle and give back rapid tum over. e.g. domestic sewage, heavy metals.

(ii) Non-biodegradable pollutants are those that cannot be decomposed by· microbes and accumulate in the environment causing pollution. e.g. plastic and pesticides like organo chlorides (strong liphilic and nonbiodegradable nature).

Some More Questions From Environmental Issues Chapter

WHO’s recommendations about the industrial noise limit is of :

Which of the atmospheric layer contains ozone layer ?

The amount of dissolved oxygen required by the microorganisms to degrade the organic wastes present in water is called ?

The cause of acid rain is :

Which one of the following causes ozone depletion ?

What disease is caused due to consumption of fishes captured from water contaminated with mercury ?

Which one of the following is not a green-house gas ?

Which gas contributes the maximum in global warming ?

Fill in the blanks with suitable words :
1. Increase in concentration of soluble salts in the soil is called.........

2. Aforestation can check the advancement of......... .

3. DDT is a serious pollutant as it is a.........pollutant and undergoes......... .

4 .........plant has become a troublesome weed in agricultural fields.

5 .........are major aerosol pollutant present in jet aircraft emission.

Write “True” or “False” :

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