Fixed limit means that you can only bet 2x the last bet. For example, of the last bet was ₹150, the maximum bet you can raise is ₹300.
Spread limit means that you can only raise up to an agreed amount. For example, if a Teen Patti game has a pre-decided spread limit of ₹300, then you can only raise up to a maximum of ₹300.
If you play no limit you can bet as high as you want in each round.
Pot limit means that you can raise up to the size of the whole pot before the raise.
For example, let’s assume that there are three players in one game. All three players have placed an ₹100 ante bet. All players are also playing blind. The total pot is now ₹300.
The first player is allowed to bet a minimum of ₹100 (blind player can bet the minimum of ante). He is also allowed to bet a maximum of ₹300 (as the total pot is ₹300). If he places the maximum bet the total pot becomes ₹600. The next player can then decide to place a minimum of ₹100 and a maximum of ₹600 (size of whole pot).