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Chemical Process

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

Smelting
Calcination
Roasting
Reduction

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

Bakelite
Polyester
Teflon
Nylon-66

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Chemical Process
Vanillin is a type of

Flavour
Anti-pyretic drug
Food preservative
Dye

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Chemical Process
The drug used in contraceptives is

Pencillin
Sulphadizene
Methyl salicylate
Mestranol

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Chemical Process
Conversion of SO₂ to SO₃ in Monsanto 4-pass converter is about __________ percent.

100
98
90
80

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Chemical Process
Which of the following is not a raw material used for the manufacture of ordinary glass?

Soda ash
Iron oxide
Silica
Limestone

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