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Chemistry

Chemistry
Rock salt is a mineral containing

Magnesium
Iron
Sodium
Potassium

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Chemistry
The molecular mass of a gas is

Equal to its vapour pressure
Not related to its vapour pressure
Half its vapour pressure
Twice its vapour pressure

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Chemistry
Heavy metals got their name because compared to other atoms they have

Higher atomic masses
Higher densities
Higher atomic numbers
Higher atomic radii

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Chemistry
Which of the following appeared to be with a significant potential for accumulation through food chains ?

DDT
Parathion
Lindane
Carbary

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Chemistry
Bhopal gas tragedy is associated with leakage of

Nitrogen dioxide
Sulphur dioxide
Methyl isocyanate
Carbon dioxide

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Chemistry
Helium is added to the oxygen supply of deep sea divers because it is

Less soluble in blood than nitrogen at high pressure
Readily miscible with oxygen
Less poisonous than nitrogen
Lighter than nitrogen

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MORE MCQ ON Chemistry

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