Silver artefacts get tarnished in air due to the formation of
- A. silver chloride
- B. silver oxide
- C. silver sulphide ✓
- D. silver sulphate
Correct Answer: C. silver sulphide
Explanation
Silver objects react with hydrogen sulphide (H_2S) present in the air to form a black coating of silver sulphide (Ag_2S), causing them to tarnish.
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