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Chemistry

Chemistry
The natural source of hydro-carbon is

Biomass
Coal
Carbohydrates
Crude oil

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Chemistry
Acid rain is caused due to pollution of atmosphere by

Oxides of nitrogen and phosphorous
Oxides of carbon and nitrogen
Oxides of nitrogen and sulphur
None of these

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Chemistry
Inert gases are

Chemically unreactive
Miscible with water
Chemically very active
Not stable

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Chemistry
Which one of the following is a greenhouse gas ?

Carbon dioxide
Helium
Nitrogen
Sulphur dioxide

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Chemistry
Calcium salts used as fertilizer is :

Calcium Carbonate
Calcium Cyanide
Calcium Sulphate
Calcium Carbide

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Chemistry
How many electrons can be accommodated in d-orbital

6
8
3
10

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