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Chemistry

Chemistry
Ultraviolet rays can be used in water treatment as

Disinfectant
Precipitator
Hydrolyser
Flocculator

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Chemistry
The Refrigerant 'FREON' is

Hydrofluosilicic Acid
Fluorspar and Felspar
Difluoro Dichloro Methane
Calcium Tetra Fluoride

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Chemistry
Milk is

Suspension
Foam
Gel
Emulsion

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Chemistry
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of

s-electrons in Mg(Z = 12)
p-electrons in CI(Z = 17)
d-electrons in Fe(Z = 26)
p-electrons in Ne(Z = 10)

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Chemistry
When there are two electrons in the same orbital, they have:

No spin
Same or opposite spin
Same spin
Opposite spin

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Chemistry
Submarines move under water. They have engines that run on

Petrol and oxygen
Diesel
Batteries
Steam

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