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Assertion:You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice.
Reason:The citric acid present in the lemon or tamarind neutralises the basis copper carbonate and dissolves the layer
A: Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B: Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C: Assertion is correct but Reason is incorrect
D: Both Assertion and Reason are incorrect
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The correct answer is option A i.e. both the assertion statement as well as reason statement are correct and the reason correctly justifies the assertion statement.
This is because the following reaction is responsible for tarnishing observed in Cu vessels :
Cu + CO2 →CuCO3
What lemon or tamarind does is that the citric acid in the former and tartaric acid in the latter dissolves that layer and gives back the metallic lustre to Cu.
Hence, the correct choice for given assertion-reason is option A
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