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Chemistry

Chemistry
Which one of the following metals pollutes the air of a city having large number of automobiles?

Cadmium
Copper
Chromium
Lead

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Chemistry
Oxide of sulphur present in the atmosphere are washed down by rains to cause :

Industrial smog formation
Depletion of fossil fuel reserves
Lowering of pH of soil
Eutrophication in lakes

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Chemistry
The function of sedimentation tank in sewage treatment is to:

Disinfect the sewage
Remove suspended solids
Remove water content
Aerate the sewage

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Chemistry
Which of the following vegetable oils does not contain essential fatty acids ?

Coconut oil
Sunflower oil
Groundnut oil
Mustard oil

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Chemistry
The graphite rods in the nuclear reactor

convert fast moving neutrons into thermal neutrons
undergo combustion which triggers the nuclear fission
react with U to release energy
produce neutrons

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Chemistry
The source of energy that causes the least global warming is

Petroleum
Coal
Geothermal energy
Natural Gas

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MORE MCQ ON Chemistry

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