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Chemistry

Chemistry
The metal that is used as a catalyst in the hydrogenation of oils is

Cu
Pt
Ni
Pb

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Chemistry
Colloids can be purified by

Condensation
Dialysis
Condensation
Condensation

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Chemistry
An inert gas mixed with oxygen given to patients suffering from restricted breathing is

Radon
Argon
Krypton
Helium

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Chemistry
Inert gases are

Miscible with water
Not stable
Chemically very active
Chemically unreactive

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Chemistry
In which of the following states maximum iron ore is found ?

Fe3O4
FeCO3
FeS2
Fe2O3

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Chemistry
Slag is a name given for

Molten calcium silicate
Molten sand
Molten iron
Molten alumina

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