Dear Balaji, 

The marks 90 would correspond to rank around  5500 to 7000.

Hence there are chances to secure seat in University. However this depends on caste reservation, locality and branch required. 

On general you might secure seat in branches of electronics, civil, mechanical, chemical. 

For more precise analysis with all requirements use the predictor tool. Here is the link for it -

https://www.google.com/url?sa=t&source=web&rct=j&url=https://dqxeclau.top/college-predictor&ved=2ahUKEwj98YuWuIfjAhVJknAKHad8DCQQFjAAegQIBRAB&usg=AOvVaw2AOFtKT1Kl7aX4aICHr3xY

Hope this helps. 

All the best.