India is a fast developing nation when a very large number of chemical

1.	India is a fast developing nation when a very large number of chemical industries are coming every year. These include industries like those of glass, paper, textile, plastics, leather, dye paints, sugar, pharmaceuticals etc. The rat- race for earning more profits and also due to competition of rates in the market, some industries are producing poor quality products and chemicals which are harming the society at large. Now, answer the following questions: (i) Production of spurious drugs is harming the mankind. What steps should be taken to check it. (ii) How do paints sometimes prove to be harmful? (iii) Why should the production of polythene bags be banned? (iv) Name a few industrial products which are recyclable. What should we do with their products? (v) What are the relative advantage and disadvantages of using synthetics fibres versus natural fibres (cotton, silk, wool etc.)?
Answer» (i) Strict quality control law should be enforced. Not only such factories should be closed, people running such factories should be severely punished. These factories should be blacklisted and photographs of owners should be published in all leading newspapers. (ii) Many paints contain lead which is poisonous. (iii) Use of polythene bags should be banned because it is not biodegradable. It may, therefore, pile up as waste and swallowed by animals causing death or choke the sewer. (iv) Advantages of synthetic fibres. (a) Strong (b) Easy to wash and wear (need no ironing) (c) can be stretched easily to different sizes like nylon socks. (d) Available in variety of colours. (e) Generally cheaper than natural fibres. (f) do not shrink. Disadvantages of synthetic fibres. (a) does not absorb moisture/sweat keeping the heat trapped in the body. (b) Give uncomfortable feel for being used as underwears (c) Catch fire or melt more easily than natural fibres. Advantages of natural fibres. (a) Clothes made from natural fibres are more comfortable because they can absorb moisture/sweat. (b) As they are natural materials, they are harmless to environment. (c) They are fire-resistant. Disadvantages of natural fibres, (a) More expensive (b) Need ironing as they are not crease-resistant. (c) Might shrink on aggressive washing.

India is a fast developing nation when a very large number of chemical industries are coming every year. These include industries like those of glass, paper, textile, plastics, leather, dye paints, sugar, pharmaceuticals etc. The rat- race for earning more profits and also due to competition of rates in the market, some industries are producing poor quality products and chemicals which are harming the society at large. Now, answer the following questions: (i) Production of spurious drugs is harming the mankind. What steps should be taken to check it. (ii) How do paints sometimes prove to be harmful? (iii) Why should the production of polythene bags be banned? (iv) Name a few industrial products which are recyclable. What should we do with their products? (v) What are the relative advantage and disadvantages of using synthetics fibres versus natural fibres (cotton, silk, wool etc.)?

Answer»

(i) Strict quality control law should be enforced. Not only such factories should be closed, people running such factories should be severely punished. These factories should be blacklisted and photographs of owners should be published in all leading newspapers.

(ii) Many paints contain lead which is poisonous.

(iii) Use of polythene bags should be banned because it is not biodegradable. It may, therefore, pile up as waste and swallowed by animals causing death or choke the sewer.

(iv) Advantages of synthetic fibres.

(a) Strong

(b) Easy to wash and wear (need no ironing)

(d) Available in variety of colours.

(e) Generally cheaper than natural fibres.

(f) do not shrink.

Disadvantages of synthetic fibres.

(a) does not absorb moisture/sweat keeping the heat trapped in the body.

(b) Give uncomfortable feel for being used as underwears

Advantages of natural fibres.

(a) Clothes made from natural fibres are more comfortable because they can absorb moisture/sweat.

(b) As they are natural materials, they are harmless to environment.

Disadvantages of natural fibres,

(a) More expensive

(b) Need ironing as they are not crease-resistant.

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