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Chemistry

Chemistry
Alum stops bleeding in minor cuts because of

Dialysis
Emulsion
Coagulation
Solvation

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Chemistry
Commercial nitric acid is coloured because it contains dissolved :

Oxygen
Coloured impurities
Nitrogen dioxide
Nitrous oxide

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Chemistry
What is the chemical symbol of mercury

Mr
None of these
Mg
Hg

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Chemistry
Taj Mahal is greatly affected due to :

Tourists
Acid rain
Deforestation
Sound pollution

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Chemistry
The value of Avogadro Number is

6.023 × 1024
6.023 × 1023
6.023 × 1025
6.023 × 1022

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Chemistry
Which is the heaviest metal among the following?

Iron
Gold
Copper
Silver

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