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Q.3.13. You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.
Answers (1)
The lemon and tamarind contains citric acid which neutralises the basic carbon carbonate and thus dissolves the greenish layer.
This is why lemon juice and tamarind is used to clean tarnished copper vessels.
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