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Chemistry

Chemistry
Zone refining is used for the purification of

Cu
Ag
Au
Ge

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Chemistry
Which one of the following is extensively used for sterilizing water ?

Alum
Borax powder
Soda powder
Bleaching powder

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Chemistry
The working of a dry cell is based on

Spontaneous oxidation-reduction reaction
Combination reaction
Electrolysis
Decomposition reaction

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Chemistry
Iron is extracted from

Bauxite
Cinnabar
Haematite
Dolomite

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Chemistry
Element 106 was discovered by

Kurchatove
Rutherford
Lawrence
Seaborg

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Chemistry
Which of the following is a renewable source of energy ?

Coal
Uranium
Natural gas
Geothermal powder

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MORE MCQ ON Chemistry

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