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Chemical Process

Chemical Process
Which of the following paper does not require a filler during manufacture?

Bond paper
Coloured paper
Writing paper
Blotting paper

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Chemical Process
The most commonly used substance to speed up the sedimentation of sewage is

Lime
Sulphuric acid
Sodium bisulphite
Chlorine

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Chemical Process
Function of thinner in a paint is to

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

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Chemical Process
High temperature carbonisation of coal takes place at __________ °C.

< 500
2000
700
1100

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Chemical Process
Manufacture of phthalic anhydride uses __________ as a catalyst.

V₂O₅
Ni
Al₂O₃
Cr

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Chemical Process
Oxygen is produced by fractionation of air using __________ process.

Claude's
Linde's
Either A or B
None of these

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