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Chemistry

Chemistry
The most abundant element in the human body is

Carbon
Oxygen
Nitrogen
Iron

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Chemistry
Galvanization of iron is carried out using

Chromium
Tin
Zinc
Copper

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Chemistry
The main component of liquid bleach is:

Sodium chloride
Hydrochloric acid
Sodium hypochlorate
Sodium hypochlorite

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Chemistry
Hydrogen is not found in atmosphere because

It immediately combines with oxygen to form water
It is highly inflammable
It is the lightest gas
It is absorbed by plants

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Chemistry
Muscle fatigue is caused by the accumulation of :

Uric acid
Lactic acid
Oxalacetic acid
Pyruvic acid

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Chemistry
Sulphur dioxide level in the atmosphere can be reduced by using

Catalytic converters in industry
Low - sulphur fuels
More efficient car engines
Static electricity to attract it in factory chimneys

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MORE MCQ ON Chemistry

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