Assertion: Copper on heating in china dish changes to black colour
Reason: copper undergoes reduction with oxygen
a) Both Aand R are true, and R is correct explanation of the assertion.
b) Both A and R are true, and R is not a correct explanation of the assertion.
C) A is true, but R is false.
D) A is False, but R is true.
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Both A and R are true, and R is correct explanation of the assertion.
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