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Chemistry

Chemistry
Aluminium can be purified by

Oxidation
Ozonolysis
Distillation
Electrolysis

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Chemistry
The items amenable to detection by soft x-rays are

genuine coins from counterfeit coins
narcotics
lead in bullets
contrabands

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Chemistry
Brass is a solution of molten copper in

Molten tin
Molten zinc
Gaseous zinc
Solid zinc

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Chemistry
The electronic configuration of an atom having atomic number ‘20’ is

2, 6, 8, 4
2, 10, 8
2, 8, 8, 2
2, 8, 10

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Chemistry
The greenhouse effect is caused by the higher level of which gas in the atmosphere ?

Carbon dioxide
Sulphur dioxide
Nitrous oxide
Carbon monoxide

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Chemistry
The major constituent of gobar gas is

Butane
Carbon dioxide
Isobutane
Methane

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MORE MCQ ON Chemistry

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