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Chemistry

Chemistry
Tear gas used by the police to disperse the mob contains

Carbon dioxide
Ammonia
Chlorine
Hydrogen sulphide

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Chemistry
The substance most commonly used as a food preservative is

Tartaric acid
Acetic acid
Sodium salt of benzoic acid
Sodium carbonate

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Chemistry
Which of the following is a secondary pollutant ?

NO
SO2
CO
PAN

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Chemistry
The heat value of combustion of Gasoline is

39400 kJ/kg
12600 kJ/kg
47000 kJ/kg
14600 kJ/kg

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Chemistry
The most important ore of aluminium is

monazite
bauxite
magnetite
haematite

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Chemistry
Nitrification is the biological process of converting

N2into nitrite
Ammonia into N2
N2 into nitrate
Ammonia into nitrite

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MORE MCQ ON Chemistry

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