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Chemistry

Chemistry
The number of waves in n x 10th Bohr's orbit are

n3
n-2
n2
n

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Chemistry
The ore of Aluminium is

Chalco pyrites
Bauxite
Fluorspar
Hematite

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Chemistry
Chemical name of common salt is

Sodium Oxide
Sodium
Sodium Chloride
Sodium Bicarbonate

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Chemistry
An emulsion is a colloid of a

Gas in a solid
Liquid in a gas
Gas in a liquid
Liquid in a liquid

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Chemistry
The ‘Green House effect’ is produced due to the presence of excess amount of

Nitrogen dioxide
Sulphur dioxide
Carbon monoxide
Methane

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Chemistry
The name of plastic polymer from which combs, toys, bowls etc., can be made, is

Teflon
Polystyrene
Metallic polysulphides
Polyurethane

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MORE MCQ ON Chemistry

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