Most of the metals react chemically with other substances in one form or another. Few metals which do not react with common chemicals are called noble metals e.g., silver, gold, platinum. The rate of reaction with which metals react is not same for all the metals. The rate of reaction depends on the reactivity of metals. On the basis of their reactive nature, a series known as reactivity series has been drawn in which metals are arranged in decreasing order of their reactivity.

A strip of magnesium ribbon is added to some solutions of metal nitrates. Which metal nitrate will have no reaction with magnesium?

Options

A. Silver nitrate
B. Zinc nitrate
C. Potassium nitrate
D. Lead nitrate

Answer

C

Explanation

Potassium nitrate will show no reaction with magnesium as magnesium is less reactive than potassium and hence, it cannot displace potassium from potassium nitrate.