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Chemistry

Chemistry
Fertiliser having high nitrogen content is :

Calcium citrate
Ammonium nitrate
Ammonium sulphate
Urea

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Chemistry
An emulsifier is an agent which

Stabilises an emulsion
Aids the flocculation of an emulsion
Homogenises an emulsion
Accelerates the dispersion

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Chemistry
Sodium is produced by the electrolysis of

Molten sodium chloride
Aqueous brine solution
Its cyanide complex
Molten sodium carbonate

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Chemistry
Concentration of a material which is lethal to 50% animal is called

ADI
LC50
LD50
NOAEL

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Chemistry
The gas that usually causes explosions in coal mines is

Carbon monoxide
Hydrogen
Air
Methane

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Chemistry
Alum stops bleeding in minor cuts because of

Solvation
Coagulation
Dialysis
Emulsion

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