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Chemistry

Chemistry
What is the atomic number of Oxygen

5
22
12
8

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Chemistry
The major harmful gas emitted by automobile vehicles which causes air pollution is

Carbon Monoxide
Carbon dioxide
Methane
Ozone gas

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Chemistry
The antiseptic compound present in dettol is

Cresol
Biothional
Iodine
Enloroxylenol

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Chemistry
Of the following commonly used materials, the one that is not an alloy is

Steel
Bronze
Brass
Copper

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Chemistry
Trinitrotoluene is

Used to fuse two metals
Used to melt metals
Used as an abrasive
Used as an explosive

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

Malathion
Isoproturan
Ethephon
Atrazine

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