Hello Sona!

If your rank is 1500 then it is very good rank and you will definitely good IIT and good branch .

Based on your interest and your choice you can see the previous year opening and closing ranks given in the josaa website.

https://josaa.nic.in/Result/Result/OpeningClosingRankArchieveN.aspx?Year=2018

Hope it answer your concerns.

Yes it's a great rank congratulations, you should definitely try for the merit lists