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Chemistry

Chemistry
Ultraviolet radiation striking the earth is due to the depletion of

Oxygen
Carbon dioxide
Carbon monoxide
Ozone

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Chemistry
The ionic radii of N3-, O2-, F- and Na+ follows the order

N3- > O2- > F- > Na+
N3- > Na+ > O2- > F-
O2- > F- > Na+ > N3-
Na+ > O2- > N3- > F-

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Chemistry
Most poisonous pollutant in water is

Detergent
Arsenic
Phosphate
Zinc

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Chemistry
Silica gel is a

Moisturizer
Delicious food
Flavouring agent
Drying agent

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Chemistry
The process of removing calcium and magnesium from hard water is known as

Filtration
Flocculation
Water softening
Sedimentation

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Chemistry
By which organic compound all the oils are known ?

Hydrocarbon
Ester
Protein
Carbohydrate

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MORE MCQ ON Chemistry

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