While trading, you buy or sell the cryptos directly from Unocoin. When it comes to exchange, you can buy or sell from/to anyone who is selling/buying at your desired rate. Unocoin helps you find your perfect match of buyers or sellers.
Under the Order book of its exchange page, you would see the bid or the rates at which someone is willing to buy or sell some assets. You would also see the difference between buying and selling price, hence can make decisions based on your negotiation power or urgency.
In exchange platform the base coins are:
INR
BTC
USDT