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Chemistry

Chemistry
Vinegar is an aqueous solution of

Oxalic acid
Citric acid
Acetic acid
Hydrochloric acid

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Chemistry
The nucleus of an atom consists of

electrons and protons
All of these
protons and neutrons
electrons and neutrons

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Chemistry
In chemical terms, what are alums used for purifying water for drinking purposes ?

Nitrates of aluminium
Hydrated chlorides
Double sulphates
Double nitrate

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Chemistry
Depletion of ozone layer causes

Lung cancer
Blood cancer
Breast cancer
Skin cancer

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

Methane
Butane
Ethane
Propane

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Chemistry
Sea water is saltier than rain water because

The air around the sea is saltish
Sea animals are salt producing
Rivers wash away salts from earth and pour them into the sea
Sea beds have salt producing mines

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