1.

Assertion (A) : The formation of iron oxide from iron is a chemical change. Reason (R) : For the rust to form from iron, it must be exposed to air and water. (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is not the correct explanation of A. (c) A is true but R is false.(d) A is false but R is true

Answer»

i. a, b and c are correct

(a) Both A and R are true and R is the correct explanation of A.



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