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Which Metal Becomes Black in the Presence of Hydrogen Sulphide Gas in Air? - Science

Which metal becomes black in the presence of hydrogen sulphide gas in air?

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Solution

Silver metal becomes black in the presence of hydrogen sulphide gas in the air. Silver reacts with hydrogen sulphide gas in the air and forms a thin black layer of silver sulphide (Ag2S) on it. Therefore, silver jewellery or ornaments become dull due to the formation of silver sulphide coating on their surface.

Concept: Extraction of Metals
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APPEARS IN

Lakhmir Singh Class 10 Chemistry (Science)
Chapter 3 Metals and Non-metals
Q 19 | Page 191
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