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Chemistry

Chemistry
The mineral containing both magnesium and calcium is

dolomite
magnesite
carnallite
calcite

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Chemistry
The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

hydrogen
carbon
oxygen
nitrogen

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Chemistry
Commercial Vaseline is derived from

Plant gums
Coal tar
Petroleum
Wool wax

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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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Chemistry
Which one of the following does not contain Silver ?

Ruby Silver
Horn Silver
Lunar Caustic
German Silver

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Chemistry
The natural resource, known as black gold is

Tin
Lead
Coal
Platinum

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