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Chemistry

Chemistry
The substance which does not expand on going from liquid state to solid state is

Water
Cast-iron
Aluminium
Type metal

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Chemistry
Biofertilizers convert nitrogen to ________ .

Amino acids
Ammonia
Nitrates
Nitrogenase

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Chemistry
The molecule which has the highest percentage of ionic character among the following is

HI
HCI
HBr
HF

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Chemistry
In deep-sea diving, divers use a mixture of gases consisting of oxygen and

Argon
Hydrogen
Helium
Nitrogen

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Chemistry
The chemical substance present in bones and teeth is

Calcium sulphate
Calcium borate
Calcium chloride
Calcium phosphate

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Chemistry
The most abundant element in the earth’s atmosphere is

Oxygen
Argon
Krypton
Nitrogen

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MORE MCQ ON Chemistry

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