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Chemistry

Chemistry
Which of the following is not a precious/semi-precious stone?

Emerald
Ruby
Sapphire
Pearl

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Chemistry
Galena is a mineral of

Iron
Gold
Calcium
Lead

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Chemistry
Soldering of two metals is possible because of the property of :

Viscosity
Osmosis
Cohesion
Surface tension

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Chemistry
Denatured spirit is ethanol mixed with

Petrol
Kerosene
Water
Pyridine

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Chemistry
Bone ash contains

Calcium sulphate
Calcium phosphate
Phosphoric sulphate
Calcium hypophosphate

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Chemistry
Select the one which is not a mixture :

Gasoline
LPG
Distilled water
Air

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MORE MCQ ON Chemistry

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