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Chemistry

Chemistry
Which of the following is not a natural source of hydrocarbon?

Mica
Petroleum
Coal
Natural Gas

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Chemistry
Carborundum is another name of

Silicon oxide
Calcium oxide
Silicon carbide
Calcium carbide

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Chemistry
Which of the following can be found as pollutants in the drinking water in some parts of India? Select the correct answer using the code given below.(A) Arsenic (B) Sorbitol (C) Fluoride (D) Formaldehyde (E) Uranium

B, D and E
A and C
A, B, C, D and E
A, C and E

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Chemistry
The metal used to galvanise iron to protect it from rusting is

Zinc
Antimony
Lead
Chromium

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Chemistry
The pollutant responsible for ozone holes is ________

CFC
CO
SO2
CO2

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Chemistry
Acid rain is caused by

SO2 and NO2
NO2and particulates
CO2and CFCs
SO2 and particulates

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