CSAB
Hi.
I am answering your question based on CSAB Allocation Results of 2019, which may or may not be reliable but however can give you the idea.
Since you have not mentioned which NIT you wish to get into, I will provide this answer for top 3 NITs.
1. National
Yes definitely if you are not satisfied with the seat allotted you can withdraw your seat and your seat acceptance fee will be refunded in lieu of a nominal charge. But do decide wisely and your decision camt be reverted. For more information do follow the link below
https://engineering.careers360.com/articles/csab
Dear Student,
with your above stated rank and category the chances for you to get a seat for CSE in any of the NITs is quite less. However you will be eligible for a seat in a couple of IITs for CSE. some of those IIITs are,
The Question containing Inaapropriate or Abusive Words
Question lacks the basic details making it difficult to answer
Topic Tagged to the Question are not relevant to Question
Question drives traffic to external sites for promotional or commercial purposes
The Question is not relevant to User
And never miss an important update