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Chemistry

Chemistry
The important ore of aluminium is

Haematite
Cryolite
Bauxite
Fluorspar

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Chemistry
Which of the following is the main compound of voter ink?

Ammonium Chloride
Silver Chloride
Ammonium Nitrate
Silver nitrate

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Chemistry
What is a mixture of potassium nitrate, powdered charcoal and sulphur called?

Glass
Cement
Gun powder
Paint

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Chemistry
Browning of paper in old books is caused by

Collection of dust
Oxidation of cellulose
Lack of aeration
Frequent use

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Chemistry
Which one of the following is an example of a gel ?

Face cream
Cheese
Milk
Shaving cream

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Chemistry
Which of the following acts as promoter for iron in Haber's process

Mn
Mo
W
Mg

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