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Chemical Process

Chemical Process
Sulphur removal by heating of pyrite ore in presence of air is called its

Reduction
Roasting
Calcination
Smelting

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Chemical Process
Starting raw material for the manufacture of alum is

Bauxite
Alumina
Gypsum
Ammonium bicarbonate

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Chemical Process
Function of thinner in a paint is to

Form a protective film
Accelerate the oxidation of oil
Suspend pigments & dissolve film forming materials
Prevent gelling of the paint

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Chemical Process
Phenol formaldehyde is produced by condensation polymerisation. It is also known as

Nylon-66
Bakelite
Teflon
Polyester

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Chemical Process
Ca(OH)₂ is called

Quicklime
Limestone
Slaked lime
Gypsum

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Chemical Process
Flash point of most vegetable oils is about __________ °C.

50
300
100
200

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