Subjective Type

There are 3 unknown metals- A, B and C. C displaces B from its oxide while with oxide of A, there is no reaction. Give the reactivity order of A, B and C.

Solution

C dispalces B from Its oxide, Therefore, C is more reactive than B. there is no reaction when C is treated with oxide of A or C does not dispalce A from its Oxide of A or C does not dispalce A from its oxide. So, A is more reactive than C. Thus, the reactivity order is B < C < A.

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