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Chemistry

Chemistry
An electric iron has a heating element made of :

Tungsten
Copper
Zinc
Nichrome

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Chemistry
The compound used in pricklyheat powder to prevent excessive sweating is

Carbonic acid
Sulphuric acid
Phosphoric acid
Boric acid

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Chemistry
Commercially, sodium bicarbonate is known as

Bleaching powder
Baking soda
Soda ash
Washing soda

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Chemistry
Water can be separated from alcohol water mixture by

Decantation
Sublimation
Evaporation
Distillation

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Chemistry
The important ore of aluminium is

Bauxite
Haematite
Fluorspar
Cryolite

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Chemistry
The product, 9-nitroanthracene is obtained from anthracene by the action of

Nitric acid in excess
Nitric acid and acetic anhydride
Nitric acid and ethyl alcohol
Nitric acid and acetic acid

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