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Chemistry

Chemistry
Which of the following is used as a lubricant in heavy machines?

Phosphorus
Sulphur
Graphite
Bauxite

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

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Chemistry
One carat of diamond is equal to

100 mg
250 mg
200 mg
150 mg

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Chemistry
The metallic constituents of hard water are :

Iron, tin and calcium
Magnesium, calcium and tin
Magnesium, tin and iron
Calcium, magnesium and iron

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Chemistry
White coal is

Uranium
None of these
Hydro-electricity
Diamond

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Chemistry
Which of the following chemicals is used in photography ?

Sodium chloride
Potassium nitrate
Silver bromide
Aluminium hydroxide

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MORE MCQ ON Chemistry

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