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Chemistry

Chemistry
The octane number of zero is assigned to

iso-octane
n-heptane
2-methyl octane
3-methyl octane

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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 –

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

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Chemistry
The percentage of carbon in cost iron is :

6 to 8
0.01 to 0.25
0.5 to 1.5
3 to 5

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Chemistry
Chernobyl disaster is the result of pollution by

Carbon dioxide
Oil spill
Acid rain
Radioactive waste

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Chemistry
Ruby and sapphire are oxides of

Iron
Tin
Copper
Aluminium

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Chemistry
The gas used for artificial fruit ripening of green fruit is

Acetylene
Ethylene
Ethane
Methane

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MORE MCQ ON Chemistry

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