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Chemistry

Chemistry
Wood spirit is

Ethyl alcohol
Methyl alcohol
Propyl alcohol
Butyl alcohol

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Chemistry
In which of the following ions , the colour is not due to d-d transition ?

[Ti(H2O)6]3+
[CoF6]3+
[Cu(NH3)4]2+
[CrO4]2−

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Chemistry
The two metal ions that cause hardness to water are:

Calcium, Magnesium
Sodium, Calcium
Sodium, Magnesium
Sodium, Potassium

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Chemistry
Electric fuse is an alloy of

Copper and iron
Zinc and lead
Carbon and tin
Tin and lead

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Chemistry
The process of improving the quality of rubber by heating it with sulphur is called.

Acceleration
Galvanization
Vulcanization
Sulphonation

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Chemistry
White phosphorus is generally kept under

Kerosene oil
Alcohol
Water
Glycerine

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