1.

The order of reactivity of K, Mg, Au and Zn with water is(a) K > Zn > Mg > Au(b) K > Mg > Zn > Au(c) K > Au > Mg > Zn(d) Au > Zn > K > Mg

Answer»

Answer is : (b) K > Mg > Zn > Au

The reactivity of K, Mg, Au and Zn with water can be determined by the reactivity series of metals. According to reactivity series, the decreasing order of reactivity will be

K > Mg > Zn > Au



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