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Chemistry

Chemistry
The gas which turns into liquid at the lowest temperature among the following is

Nitrogen
Hydrogen
Oxygen
Helium

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Chemistry
Which one of the following is not present in cement ?

Alumina
Clay
Gypsum
Alum

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Chemistry
Glycol is added to aviation gasoline because it

Reduces consumption of petrol
Prevents freezing of petrol
Reduces evaporation of petrol
Increases efficiency of petrol

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Chemistry
1 carat of diamond is equal to

100 g
100 mg
200 g
200 mg

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Chemistry
Which of the following metals is not a pollutant ?

Arsenic
Lead
Aluminium
Mercury

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

Uranium
Natural gas
Coal
Geothermal powder

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