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Chemistry

Chemistry
Copper is refined by

Zone refining
Roasting
Electrolysis
Oxidation

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Chemistry
Molality of pure water is

55.5
1.8
5.55
18

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Chemistry
Which one of the following chemicals helps in fruit ripening?

Atrazine
Malathion
Isoproturan
Ethephon

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Chemistry
Which one of the following is not a characteristic feature of alloys? They are

Solutions
Homogeneous systems
Mixtures
Compounds

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Chemistry
The metal extracted from Bauxite is :

Copper
Silver
Aluminum
Manganese

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Chemistry
Galvanization is the :

Deposition of copper on iron
Deposition of zinc on iron
Deposition of aluminium on iron
Deposition of tin on iron

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