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Chemistry

Chemistry
Hardest allotrope of carbon is

Diamond
Graphite
Coke
Lamp black

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Chemistry
Which of the following is a man-made source of air pollution ?

Forest fire
Automobile exhaust
All of these
Bacterial action in soil and swamp areas

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Chemistry
What are the major pollutants of cigarette smoke?

Dioxin and benzene
Carbon monoxide and dioxin
Carbon monoxide and benzene
Carbon monoxide and nicotine

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Chemistry
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is

1 gram of molecule
5 gram of molecule
10 gram of molecule
0.5 gram of molecule

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Chemistry
'All the four quantum numbers of two electrons in an atom are not the same.' It is the law of –

Exclusion Principle of Pauli
Avogadro's Law
Uncertainty Principle of Hiesenberg
Hund's rule of maximum multiplicity

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Chemistry
The noble gas used in radiotherapy is

Xenon
Radon
Argon
Neon

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MORE MCQ ON Chemistry

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