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Chemistry

Chemistry
White coal is

None of these
Uranium
Hydro-electricity
Diamond

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Chemistry
The buffer action of blood is due to the presence of

CI– and [HCO3]–
CI– and [CO3]2–
HCI and NaCI
[HCO3]– and H2CO3

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Chemistry
1 carat of diamond is equal to

100 mg
200 mg
100 g
200 g

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Chemistry
The chemical name of ‘Common salt’ is

Sodium chloride
Ammonium chloride
Calcium chloride
Sodium nitrate

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Chemistry
Among the following, carbonate ore of Zinc is

Zincite
Zincblende
Calamine
Sphalerite

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Chemistry
Heavy metals got their name because compared to other atoms they have

Higher densities
Higher atomic masses
Higher atomic radii
Higher atomic numbers

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