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Chemistry

Chemistry
Oxygen has (+) oxidation number only in

H2O (2)
N2O
OF2
C12O

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Chemistry
Which one is heaviest naturally-occurring element of the periodic element

Uranium
Rhodium
Thorium
Iron

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Chemistry
An emulsion is a colloid of a

Liquid in a liquid
Gas in a solid
Liquid in a gas
Gas in a liquid

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Chemistry
The amount of chlorine available in water after disinfection is called as

Free chlorine
Free available chlorine
Residual chlorine
Combined available chlorine

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Chemistry
Two electrons in an orbital are differentiated by which of the following ?

Magnetic quantum number
Azimuthal quantum number
Spin quantum number
Principal quantum number

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Chemistry
White phosphorus is always kept under

Ether
Benzene
Kerosene
Water

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