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Chemistry

Chemistry
What do you understand by the term Espuma ?

Foam
Salt
Soap
Calcium

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Chemistry
The presence of ozone in the stratosphere is responsible for

Supplying oxygen for people travelling in jets
Increasing the average global temperature in recent years
Higher rate of photosynthesis
Checking the penetration of ultra-violet rays to the earth

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Chemistry
Nylon is made up of :

Polyester
Polypropylene
Polyethylene
Polyamide

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Chemistry
Carborundum is another name of

Calcium oxide
Silicon carbide
Calcium carbide
Silicon oxide

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Chemistry
Which one of the following chemicals helps in fruit ripening?

Atrazine
Ethephon
Isoproturan
Malathion

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Chemistry
Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called

Fumes
Aerosols
Smoke
Mists

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MORE MCQ ON Chemistry

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