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Chemistry

Chemistry
Saline soil contains

Lot of moisture
Hard rocks
High concentration of salt
None of these

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Chemistry
Which one is the purest form of carbon

Diamond
Coal
Graphite
Iron

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Chemistry
Which of the following is used as a lubricant in heavy machines?

Graphite
Phosphorus
Bauxite
Sulphur

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Chemistry
The length of double bond is _______ than single bond

Of same lenght
Shorter
Longer
None of these

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Chemistry
The percentage of nitrogen present in ammonium sulphate is :

0.305
0.27
0.25
0.18

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Chemistry
Sea weeds are important source of

Iodine
Bromine
Chlorine
Iron

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