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Chemistry

Chemistry
Which of the following is a secondary pollutant ?

NO
PAN
CO
SO2

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Chemistry
The lowest layer of earth's atmosphere is

Ionosphere
Troposphere
Mesosphere
Stratosphere

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Chemistry
An acid having basicity one is

Sodium dihydrogen phosphate
Phosphoric acid
Disodium hydrogen phosphate
Sodium phosphate

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Chemistry
The hottest part of the gas flame is known as

dark zone
blue zone
non-luminous zone
luminous zone

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Chemistry
Which one of the following is used as preservative for foodstuff ?

Picric acid
Sodium Chloride
Glycerine
Sodium Benzoate

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Chemistry
The inherited traits of an organism are controlled by

RNA molecules
DNA molecules
nucleotides
enzymes

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MORE MCQ ON Chemistry

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