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Chemistry

Chemistry
Which of the following elements is found in all organic compounds

Oxygen
Calcium
Nitrogen
Carbon

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Chemistry
Epsom salt is used

In paper industry
In making tooth paste
As purgative
In softening water

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Chemistry
The polymerisation of which often following is used in manufacturing of polythene in industry ?

Methane
Styrene
Acetylene
Ethylene

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Chemistry
Sour milk contains

Lactic acid
Citric acid
Acetic acid
Tartaric acid

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Chemistry
The gas used in the artificial ripening of fruits is

Butane
Ethane
Methane
Acetylene

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Chemistry
Cooking gas is a mixture of

Carbon dioxide and oxygen
Methane and ethylene
Carbon monoxide and carbon dioxide
Butane and propane

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