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Chemistry

Chemistry
Ozone layer is present in

Stratosphere
Exosphere
Troposphere
Ionosphere

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Chemistry
The Bhopal tragedy was caused by the gas

Chlorine
Phosgene
Carbon monoxide
Methyl isocyanate

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Chemistry
Highest percentage of carbon is found in which form of coal?

Lignite
Anthracite
Bituminous
Peat

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Chemistry
Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives

Copper at cathode and oxygen at anode
Hydrogen at cathode and oxygen at anode
Copper at anode and oxygen at cathode.
Copper at cathode and anodes dissolve to give copper

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Chemistry
Which of the following is biodegradable ?

Paper
D.T.
Aluminium
Plastic

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Chemistry
Heating of a ore below its melting point in the absence of air is known as

Calcination
Refining
Roasting
Smelting

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MORE MCQ ON Chemistry

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