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Chemistry

Chemistry
Which one is the purest form of carbon

Iron
Coal
Diamond
Graphite

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Chemistry
Which one of the following has greatest mass ?

Neutron
Electron
Proton
Hydrogen nucleus

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Chemistry
The heat energy produced when the human body metabolises 1 gram of fat is

29 KJ
1 KJ
39 KJ
30 KJ

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Chemistry
Among the following, carbonate ore of Zinc is

Calamine
Sphalerite
Zincite
Zincblende

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Chemistry
Smoke is formed due to

Solid dispersed in gas
Solid dispresed in liquid
Gas dispresed in solid
Gas dispersed in gas

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Chemistry
Formation of ozone hole is maximum over

Europe
Africa
Antarctica
India

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