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Chemistry

Chemistry
Vulcanized rubber contains sulphur

10-15%
7-9%
3-5%
0.02

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Chemistry
In which of the following states maximum iron ore is found ?

FeCO3
Fe3O4
Fe2O3
FeS2

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Chemistry
What is a mixture of potassium nitrate, powdered charcoal and sulphur called?

Glass
Gun powder
Cement
Paint

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Chemistry
If there is one million Mg2+ ions in MgCl2, how many chloride ions are there?

Half a million
Ten million
Two million
One million

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Chemistry
The next higher homologue of C6H14 is

C7H12
C6H12
C7H16
C7H14

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Chemistry
Ozone depletion in the atmosphere is mainly caused by

Hydrogen sulphide
Nitrogen dioxide
Sulphur dioxide
Chlorofluorocarbon

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