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Chemistry

Chemistry
Sea weeds are important source of

Bromine
Iron
Iodine
Chlorine

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Chemistry
Oxide of sulphur present in the atmosphere are washed down by rains to cause :

Depletion of fossil fuel reserves
Eutrophication in lakes
Lowering of pH of soil
Industrial smog formation

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

Filtration
Flocculation
Sedimentation
Water softening

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Chemistry
Pyrethrin used in mosquito coil is obtained from

A bacterium
A fungus
A seed plant
An insect

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Chemistry
Galvanised iron is made by coating iron with

Zinc
Nickel
Chromium
Sulphur

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Chemistry
Which of the following is also used as a Bio fertilizer?

None of these
Uric Acid
Ammonia
Urea

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MORE MCQ ON Chemistry

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