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Chemistry

Chemistry
The inherited traits of an organism are controlled by

enzymes
nucleotides
DNA molecules
RNA molecules

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Chemistry
The chemical name of 'Plaster of Paris' commonly used for setting broken bones is

Calcium sulphate
Calcium nitrate
Calcium carbonate
Calcium chloride

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Chemistry
Candle is a mixture of

Bees wax and stearic acid
Paraffin was and stearic acid
Higher fatty acids and stearic acid
Bees wax and paraffin wax

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Chemistry
The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is

6.023 x 1019
4.84 x 1017
6.023 x 1023
1.568 x 103

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Chemistry
Burning pyrites ore gives out

Carbon dioxide gas
Nitric oxide gas
Nitrogen dioxide gas
Sulphur dioxide gas

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Chemistry
Zone refining is used for the purification of

Cu
Ge
Au
Ag

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MORE MCQ ON Chemistry

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