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Fractional Distillation of Petroleum

Petroleum ref...

Question

Petroleum refineries remove chemical compounds that contain sulphur in order to:

A

prevent pollution of the air by sulphur

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B

make pure, white petrol

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C

increase the mileage of petrol

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D

use the sulphur to make other compounds cheaply

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Solution

The correct option is C prevent pollution of the air by sulphur
Air is polluted by sulphur by converting into sulphur dioxide. So, petroleum refineries remove chemical compounds that contain sulphur.

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Similar questions

Name the compounds of sulphur that cause air pollution. Also state the harmful effects of sulphur compounds.

Q. In a pollution study of

1500

Indian rivers the following data were reported.

520

were polluted by sulphur compounds;

335

were polluted by phosphates,

425

were polluted by crude oil;

100

were polluted by both crude oil and sulphur compounds;

180

were polluted by both sulphur compounds and phosphate;

150

were polluted by both phosphates and crude oil and

28

were polluted by sulphur compounds, phosphates and crude oil.
How many of the rivers were polluted by exactly one of the three impurities?

Q. In a pollution study of 1500 Indian canals, the following data were reported. 520 were polluted by sulphur compounds, 335 polluted by phosphate, 425 polluted by crude oil, 100 polluted by both crude oil and sulphur compounds, 180 polluted by both sulphur compounds and phosphate, 150 polluted by both phosphates and crude oil and 28 polluted by sulphur compounds, phosphates and crude oil. How many of the canals were polluted by at least one of the three impurities? How many of the canals were polluted by exactly one of the three impurities?

Q. In a pollution study of 1500 Indian rivers the following data were reported.520 were polluted by sulphur compounds, 335 were polluted by phosphates, 425 were polluted by crude oil, 100 were polluted by both crude oil and sulphur compounds, 180 were polluted by both sulphur compound and phosphates, 150 were polluted by both phosphates and crude oil and 28 were polluted by sulphur compounds, phosphates and crude oil. Let "n" be the number of the rivers were polluted by at least one of the three impurities.Find sum of digits of "n" ?

Q. Chemical compounds other than acids manufactured industrially from sulphuric acid is :

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