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Chemistry

Chemistry
The substance that is added to make natural rubber strong and more bouncy is

Sponge
Sulphur
Polythene
Chlorine

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Chemistry
Choose the incorrect statement pertaining to organic compounds

They are not easily combustible
They have low melting and boiling points
They do not dissolve in water
They contain mainly carbon and hydrogen

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Chemistry
Chemical name of Gammaxane is

Toluene
Chloro benzene
Benzene hexachloride
Aniline

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Chemistry
The gas that is used in the manufacture of vanaspati ghee is :

Hydrogen
Carbon dioxide
Nitrogen
Oxygen

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

Saltpetre
Sodium chloride
Borax
Hydrogen peroxide

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Chemistry
Which of the following is used for refrigeration?

Chlorine
Freon
Phosphine
Sulphur dioxide

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