Manish was given aqueous solutions of silver nitrate, zinc sulphate and an iron nail. In the first experiment, he dipped iron nail in silver nitrate solution and observed that the solution turned brown. In second experiment, he dipped iron nail in zinc sulphate solution. However, no change was observed.
Based on the above information, answer the following questions.
Name the type of reaction that occurs when iron reacts with `AgNO_3` solution.

Explanation

Since iron displaces silver from silver nitrate the reaction is displacement reaction.