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Chemistry

Chemistry
Hardest allotrope of carbon is

Diamond
Graphite
Lamp black
Coke

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Chemistry
What is the mass percentage of oxygen in carbon dioxide (CO2)

0.305
0.727
0.658
0.509

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Chemistry
Hardness of the water is commonly measured in terms of

Magnesium carbonate equivalents
Magnesium sulphate equivalents
Calcium carbonate equivalents
Calcium sulphate equivalents

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Chemistry
‘Aerosol’ is known as

Pollutant gas, present in air
Green house gas present in air
Microbes, present in air
Suspended solid particles in air

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Chemistry
Maximum permissible concentration of copper in drinking water in mg/L is

0.01
1
0.05
2

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Chemistry
The least preferred technique in the disposal of Municipal Solid Waste is

Land filling
Incineration
Composting
Bricketting

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MORE MCQ ON Chemistry

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