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Chemistry

Chemistry
One carat of diamond is equal to

100 mg
250 mg
150 mg
200 mg

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Chemistry
Philosopher’s wool is chemically

Magnesium oxide
Calcium oxide
Zinc oxide
Aluminium oxide

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Chemistry
Laughing gas is

Nitrogen pentoxide
Nitric oxide
Nitrogen trioxide
Nitrous oxide

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Chemistry
Cement is formed by strongly heating a mixture of

Limestone and graphite
Limestone and clay
Clay and graphite
Chalk and graphite

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Chemistry
Oxide of sulphur present in the atmosphere are washed down by rains to cause :

Eutrophication in lakes
Industrial smog formation
Depletion of fossil fuel reserves
Lowering of pH of soil

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Chemistry
Besides CO2, the other green house gas is

CH4
Ar Ar
N2 N2
O2

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MORE MCQ ON Chemistry

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