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Chemistry

Chemistry
The pollutant responsible for ozone holes is ________

SO2
CFC
CO
CO2

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Chemistry
Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?

Propane
Ethane
Methane
Butane

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Chemistry
The most abundant element in the earth’s atmosphere is

Argon
Oxygen
Krypton
Nitrogen

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

Isoproturan
Ethephon
Malathion
Atrazine

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Chemistry
Bee sting contains

An acidic liquid
A salt solution
An alkaline liquid
A corrosive liquid

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Chemistry
Which of the following compounds is commonly used as an antiseptic in mouthwashes and toothpastes ?

Hydrogen peroxide
Borax
Sodium chloride
Saltpetre

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