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Chemical Process

Chemical Process
Sodium bisulphite is used for __________ water.

Dechlorination
Neither A nor B
Deaeration
Both A & B

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Chemical Process
Gun powder, which is an explosive comprises of charcoal, sulphur and

Nitro glycerene
Dynamite
Glycerene
Salt petre

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Chemical Process
During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to

None of these
Reduce the cooling water circulation rate
Increase the rate of absorption
Avoid corrosion

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Chemical Process
Concentration of sulphide ores is done usually by

Electro magnetic separation
Roasting
Smelting
Froth floatation

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Chemical Process
Carborundum consists mainly of

Silicon carbide
Boron carbide
Bauxite
Calcium carbide

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Chemical Process
Carboxymethyl cellulose (CMC) is added in detergents to

Inhibit corrosion in washing machines made of aluminium
None of these
Act as optical brightening agent
Prevent redeposition of soil on cleaned surface

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