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Chemistry

Chemistry
Which one is the purest form of carbon

Iron
Coal
Diamond
Graphite

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Chemistry
The process of improving the quality of rubber by heating it with sulphur is called.

Sulphonation
Galvanization
Vulcanization
Acceleration

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Chemistry
The scientist who experimentally proved the existance of positron is

Bohr
Anderson
Fermi
Bethe

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Chemistry
The amount of chlorine available in water after disinfection is called as

Free chlorine
Residual chlorine
Free available chlorine
Combined available chlorine

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Chemistry
The lightest gas which is non-inflammable is

Nitrogen
Hydrogen
Helium
Oxygen

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Chemistry
Which one of the following is found in Vinegar ?

Butyric acid
Acetic acid
Propionic acid
Formic acid

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