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Chemistry

Chemistry
The main source of Naphthalene is

Diesel
Camphor
Coal-tar
Charcoal

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Chemistry
Which is the heaviest metal among the following?

Copper
Silver
Iron
Gold

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Chemistry
Which of the following is ozone depleting pesticide ?

Methyl bromide
Benzene
Ethylene ozonide
D.T.

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Chemistry
Iron is extracted from

Dolomite
Haematite
Cinnabar
Bauxite

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Chemistry
Zone refining is used for the purification of

Ag
Cu
Au
Ge

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Chemistry
Candle is a mixture of

Higher fatty acids and stearic acid
Paraffin was and stearic acid
Bees wax and stearic acid
Bees wax and paraffin wax

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