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General Science

General Science
The wavelength of X-rays is of the order of

10 micron
1 angstrom
1 cm
1 m

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General Science
The hardest substance available on earth is

None of the listed here
Gold
Diamond
Iron

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General Science
Reading of a barometer going down is an indication of

Intense heat
Snow
Rainfall
Storm

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General Science
What are the soaps?

Salts of silicates
Sodium or potassium salts of heavier fatty acids
Esters of heavy fatty acids
Mixture of glycerol and alcohols

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General Science
According to Avogadro's Hypothesis, the smallest particle of an element or a compound, that can exist independently, is called:

A cation
A molecule
An anion
An atom

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General Science
Gypsum is added to cement clinker to

Decrease the rate of setting of cement
Bind the particles of calcium silicate
Facilitate the formation of colloidal gel
Increase the tensile strength of cement

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