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General Science

General Science
Which of the following is not an isotope of hydrogen?

Protium
Yttrium
Deuterium
None of the listed here

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General Science
Permanent hardness of water can be removed by adding

Potassium Permanganate
Bleaching Powder
Washing Soda
Chlorine

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General Science
Which of the following is used for removing air bubbles from glass during its manufacture?

Feldspar
Soda ash
Potassium carbonate
Arsenous oxide

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General Science
The property of a substance to absorb moisture from the air on exposure is called

Desiccation
Deliquescence
Efflorescence
Osmosis

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General Science
Water is a good solvent of ionic salts because

It has no colour
It has a high dipole moment
It has a high specific heat
It has a high boiling point

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General Science
The hardest substance available on earth is

None of the listed here
Iron
Gold
Diamond

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