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Chemistry

Chemistry
The highest volume of gases in lower atmosphere is comprised of

Oxygen
Hydrogen
Carbon dioxide
Nitrogen

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Chemistry
Formation of ozone hole is maximum over

Europe
Antarctica
Africa
India

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Chemistry
Trinitrotoluene is

Used as an abrasive
Used as an explosive
Used to melt metals
Used to fuse two metals

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Chemistry
The gas used for filling weather balloons is

Helium
Hydrogen
Nitrogen
Air

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Chemistry
The most suitable unit for expressing nuclear radius is :

Fermi
Angstrom
Nanometre
Micron

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Chemistry
An emulsion is a colloid of a

Liquid in a liquid
Gas in a liquid
Liquid in a gas
Gas in a solid

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MORE MCQ ON Chemistry

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