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Chemistry

Chemistry
In an oxygen molecule, two atoms are united by

Three bonds
Two bonds
Four bonds
One bond

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

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

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Chemistry
Gobar gas mainly contains

Hydrogen sulphide
Carbon dioxide
Carbon monoxide
Methane

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Chemistry
Setting of plaster of paris involves

Dehydration process
Reduction process
Hydration to form other hydrates
Oxidation process

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Chemistry
Aspirin is

Phenyl Salicilate
Methyl Salicilate
Acetyl Salicilic acid
Methoxy benzoic acid

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Chemistry
Which one is not a pure form of carbon

Gold
Diamond
Coal
Graphite

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MORE MCQ ON Chemistry

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