a metal oxide contains 60% metal.the equivalent weight of metal is :-

A)12

B)60

C)40

D)24

60% metal means the oxide contains 40% oxygen.

So, 100 g oxide contains 60 g metal and 40 g oxygen

Therefore, equivalent mass of metal = (mass of metal/ mass of oxygen) x 8

= (60/40) x 8

= 12

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