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Chemistry

Chemistry
The lowest layer of earth's atmosphere is

Ionosphere
Troposphere
Stratosphere
Mesosphere

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Chemistry
‘Aerosol’ is known as

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

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Chemistry
Ozone depletion in the stratosphere is mainly caused by

NO2
Chlorogluorocarbons
NO
SO2

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Chemistry
The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of

an oxidation reaction
a condensation reaction
an elimination reaction
an addition reaction

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Chemistry
Neoprene is a polymer of

Isobutane
Chloroprene
Isopentane
Isoprene

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Chemistry
The acid used in lead storage cells is

Phosphoric acid
Nitric acid
Sulphuric acid
Hydrochloric acid

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