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Chemistry

Chemistry
Formation of ozone hole is maximum over

Europe
India
Africa
Antarctica

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Chemistry
In deep-sea diving, divers use a mixture of gases consisting of oxygen and

Argon
Helium
Hydrogen
Nitrogen

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Chemistry
Sweat contains water and ________

Lactic acid
Vinegar
Salt
Citric acid

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Chemistry
Inert gases are

Not stable
Chemically unreactive
Chemically very active
Miscible with water

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Chemistry
The gas that causes suffocation and death when coal or coke is burnt in a closed room is

Carbon di-oxide
Carbon monoxide
Methane
Ethane

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Chemistry
Which one of the following is found in Vinegar ?

Butyric acid
Propionic acid
Formic acid
Acetic acid

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