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Chemistry

Chemistry
What is the atomic number of mercury

63
32
80
41

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Chemistry
Bleaching action of moist sulphur di-oxide is because of its

Reducing property
Acidic property
Oxidising property
Basic property

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

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

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Chemistry
The ‘Green House effect’ is produced due to the presence of excess amount of

Methane
Nitrogen dioxide
Sulphur dioxide
Carbon monoxide

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Chemistry
Food cans are coated with tin and not with zinc because

Zinc is costlier than tin
Zinc is less reactive than tin
Zinc has a higher melting point than tin
Zinc is more reactive than tin

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Chemistry
Taj Mahal is greatly affected due to :

Tourists
Acid rain
Deforestation
Sound pollution

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MORE MCQ ON Chemistry

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