To prevent misuse/fraudulent use of the national currency, a note ban is imposed on its use at certain times.

Question

Identify and explain the concept from the given illustrations:

To prevent misuse/fraudulent use of the national currency, a note ban is imposed on its use at certain times.

Answer 1

Demonetization. 

Demonetization is a tool to control black money in a country. A note ban is a case of demonetization.