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CHEMISTRY

Chemistry
Sodium is produced by the electrolysis of

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

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Chemistry
Bleaching powder is prepared by passing :

Chlorine over slaked lime
Oxygen over slaked lime
Carbon dioxide over slaked lime
Chlorine over quick lirne

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Chemistry
Most commonly used bleaching agent is

Chlorine
Carbon dioxide
Sodium chloride
Alcohol

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Chemistry
The acid which is secreted by the glands in the stomach wall is

Hydrochloric acid
Sulphuric acid
Nitric acid
Phosphoric acid

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Chemistry
Heating of a ore below its melting point in the absence of air is known as

Smelting
Calcination
Roasting
Refining

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