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Chemistry

Chemistry
Water can be separated from alcohol water mixture by

Distillation
Decantation
Evaporation
Sublimation

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Chemistry
The chemical that is used to ripen mangoes is

Calcium carbide
Calcium sulphide
Calcium carbonate
Calcium chloride

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Chemistry
What is the principal ore of aluminium ?

Lignite
Bauxite
Copper
Dolomite

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Chemistry
Poison used for killing rats is

Zinc phosphide (Zn3P2)
Magnesium nitride (Mg3N2)
Calcium phosphide (Ca3P2)
Magnesium phosphide (Mg3P2)

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Chemistry
An inert gas mixed with oxygen given to patients suffering from restricted breathing is

Krypton
Helium
Radon
Argon

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Chemistry
The major constituent of gobar gas is

Isobutane
Carbon dioxide
Methane
Butane

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MORE MCQ ON Chemistry

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