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Chemistry

Chemistry
The most abundant metal in the Earth’s crust is

Zinc
Iron
Aluminium
Copper

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Chemistry
The maximum number of covalent formed by nitrogen is

3
4
2
1

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Chemistry
The absolute temperature of a gas is doubled and the pressure is reduced to half, the volume of the gas

Remains unchanged
Will be doubled
Will increase four-fold
Will be reduced to half

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Chemistry
Which is not an anasthetic agent in surgical operations?

Ether
Acetone
Nitrous oxide
Chloroform

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Chemistry
The anode of a dry cell is made up of

Lead
Iron
Cadmium
Zinc

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Chemistry
The gas causing acid rain in an industrial area is

Methane
Sulphur dioxide
Carbon dioxide
Carbon monoxide

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