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Chemistry

Chemistry
The elements with atomic numbers 9, 17, 35, 53, 85 are all

Heavy metals
Light metals
Noble gases
Halogens

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Chemistry
The percentage of carbon in cost iron is :

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

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Chemistry
The mineral containing both magnesium and calcium is

dolomite
calcite
magnesite
carnallite

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Chemistry
Who modified Bohr's theory by introducing elliptical orbits for electron path

Sommerfeld
Hund
Thomson
Rutherford

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Chemistry
Impure camphor is purified by

Fractional distillation
Steam distillation
Sublimation
Fractional crystallisation

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Chemistry
Which one is the purest form of carbon

Diamond
Iron
Coal
Graphite

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MORE MCQ ON Chemistry

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