Neha, similar to trading stocks you can trade currency. In India you can on the exchanges trade, USDINR, USDJPY, USDGBP. Suggest you to go through this Varsity module on currency.
In addition to Nithin’s answer, check one of the good strategy for USD-INR currency trading below:
The Forex or Foreign Exchange is one of the biggest markets of the world. It is in this market that different currencies of the world are transacted. To know more you should connect to Tradebulls who can provide you more information.