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Chemistry

Chemistry
Which one is not a primary greenhouse gases in the Earth's atmosphere

Nitrogen
Methane
Carbon dioxide
Ozone

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Chemistry
‘Aerosol’ is known as

Pollutant gas, present in air
Suspended solid particles in air
Microbes, present in air
Green house gas present in air

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Chemistry
Cement is made hard with

Polymerisation
Dissociation of water
Hydration and dissociation of water
Dehydration

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Chemistry
Dry ice is the solid form of :

Nitrogen
Water
Carbon di–oxide
Air

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Chemistry
The compound that has the least value for octane number is :

Iso-octane
2,2-dimethyl hexane
N-heptane
2-methyl heptane

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Chemistry
In deep-sea diving, divers use a mixture of gases consisting of oxygen and

Nitrogen
Hydrogen
Helium
Argon

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MORE MCQ ON Chemistry

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