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Why is it necessary to remove sulphur fr...

Why is it necessary to remove sulphur from petroleum products ?  
(A) To reduce the emission of sulphur dioxide in exhaust fumes
(B) To increase efficiency of automobiles engines
(C) To use sulphur removed from petroleum for commercial purposes
(D) To increase the life span of engine silencers

A

To reduce the emission of sulphur dioxide in exhaust fumes

B

To increase efficiency of automobiles engines

C

To use sulphur removed from petroleum for commercial purposes

D

To increase the life span of engine silencers

Text Solution

Verified by Experts

The correct Answer is:
A
To reduce the emission of sulphur dioxide in exhaust fumes is necessary to remove sulphur `(SO_(2) and SO_(3))` from petroleum products.
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Science, like any knowledge, can be put to good or bad use, depending on the user. Given below are some of the applications of science. Formulate your views on whether the particular application is good, bad or something that cannot be so clearly categorised : (a) Mass vaccination against small pox to curb and finally eradicate this disease from the population. (This has already been successfully done in India). (b) Television for eradication of illiteracy and for mass communication of news and ideas. (c) Prenatal sex determination (d) Computers for increase in work efficiency (e) Putting artificial satellites into orbits around the Earth (f ) Development of nuclear weapons (g) Development of new and powerful techniques of chemical and biological warfare). (h) Purification of water for drinking (i) Plastic surgery (j ) Cloning

Explain why : (a) Two bodies at different temperatures T_1 and T_2 if brought in thermal contact do not necessarily settle to the mean temperature (T_1 + T_2 )//2 . (b) The coolant in a chemical or a nuclear plant (i.e., the liquid used to prevent the different parts of a plant from getting too hot) should have high specific heat. (c) Air pressure in a car tyre increases during driving. (d)The climate of a harbour town is more temperate than that of a town in a desert at the same latitude.

Explain why (a) Two bodies at different temperatures T_(1) and T_(2) if brought in thermal contact do not necessarily settle to the mean temperature (T_(1) + T_(2))//2 . (b) The coolant in a chemical or a nuclear plant (i.e., the liquid used to prevent the different parts of a plant from getting too hot) should have high specific heat. (c) Air pressure in a car tyre increases during driving. (d) The climate of a harbour town is more temperate than that of a town in a desert at the same latitude.

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