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Environmental Issues

Question
CBSEENBI12001568
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Discuss briefly the following :

(a) Radioactive wastes.

(b) Defunct ships and e-wastes.

(c) Municipal solid wastes.

Solution
(a) Radioactive wastes are the wastes that contain radioactive material. it is generated when nuclear energy is used  for generating electricity or other purposes. radioactive wastes are extremely dangerous as they radiation given off from them causes mutations at a very high rate. Safe disposal of radioactive wastes is another major problem. 

(b) Defunct ships and e-wastes. Defunct ships are a kind of solid waste requiring proper disposal. Such ships are broken down in developing countries for scrap metal. They often contain toxic substances such as asbestos, polychlorinated biphenyls, tributyltin, lead and mercury.

E-waste are irreparable computers and electronic goods . Most of them are shipped to developing countries for metals like copper, nickel, silicon, gold, that are recovered by recycling. E-wastes are buried and incinerated.

(c) Municipal Solid Wastes. Municipal solid wastes are wastes generated  from homes, offices, stores, schools, etc. and they are collected and disposed by the municipality. The municipal solid wastes generally comprise paper, food wastes, glass, metals, rubber, leather, textile, etc. Burning reduces the volume of the wastes, although it is generally not complete and open dumps often serve as the breeding ground for rats and flies.

 

Some More Questions From Environmental Issues Chapter

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” :

Coin one word for the following statements :

Discarded computer parts like monitors, key boards, mouse etc.

Coin one word for the following statements :
Degradation of organic waste by worms like red wigglers, white worms and earthworms.

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