Brass gets discoloured in air because of the presence of which of the following gases in air ?

Hydrogen sulphide

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Oxygen

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Nitrogen

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Carbon dioxide

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Solution

The correct option is A Hydrogen sulphide
Hydrogen sulphide

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Similar questions

S O_{2} + 2 H_{2} S \to 2 H_{2} O + 3 S

S O_{2} + 2 H_{2} S \to 2 H_{2} O + 3 S

When the gases sulphur dioxide and hydrogen sulphide mix in the presence of water the reaction is :

SO₂+2H₂S=2H₂O+3S

Here hydrogen sulphide is acting as :

A. Oxidizing agent

B. Reducing agent

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