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Chemistry

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

0.323
0.201
0.158
0.273

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Chemistry
Conversion of chemical energy into electrical energy occurs in

Dynamo
A battery
Electric heaters
Atomic bombs

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Chemistry
Who developed Hydrogen Bomb?

Edward Teller
J. Robert Oppen Heimer
Samuel Cohen
Wernher Von Braun

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Chemistry
The rusting of iron is a/an

None of these
Electrical change
Electrochemical change
Physical change

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Chemistry
Nitrogen fixation is a process of

Conversion of molecular nitrogen to ammonia
Assimilation of nitrate
Conversion of organic nitrogen to proteins
Utilisation of nitrogen gas

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Chemistry
Cooking gas is a mixture of

Methane and ethylene
Carbon monoxide and carbon dioxide
Carbon dioxide and oxygen
Butane and propane

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MORE MCQ ON Chemistry

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