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CHEMISTRY

Chemistry
Which colour is produce by Arsenic during flame test

Blue
Green
Red
Crimson

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Chemistry
Bleaching action of moist sulphur di-oxide is because of its

Oxidising property
Basic property
Acidic property
Reducing property

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Chemistry
Sulphur dioxide bleaches colouring matter by :

Dehydration
Oxidation
Decomposition
Reduction

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Chemistry
Which one of the following is commonly used for pulp bleaching in the paper industry?

Mild sulphuric acid
Hydrogen peroxide
Glucose isomerase
Iodine and water

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Chemistry
In upper layer of atmosphere ozone is formed by

The combination of oxygen molecules
The action of nitrogen on oxygen in atmosphere
The action of ultraviolet rays on oxygen
Subjecting oxygen to high pressure

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