IF I DO NOTHING WITN MY ALLOCATED SEAT IN 2ND ROUND IN WBJEE,WILL MY PREVIOUS ALLOCATED SEAT BE CANCELLED ?AND WILL I GET SAME CLG IN 3RD ROUND???

Dear student,

If you got a seat in second round counselling of WB Jee this year then it's better not to leave it.

If you take no action or don't confirm your seat in the given limited time then it will be automatically cancelled and other student will get it.
You have to report within the given limited time to claim you seat.

Now from this year you can register from any round counselling of wbjee, so you have to start a new registration in 3rd round counselling if if you leave your allocated seat in second round and there is no guarantee that is still that the college allotted to you in second round counselling will be allotted to you in 3rd round counselling.

Because as you have left your seat then it will be given to other student and your claim will be over on that seat.

So it's better not to leave the counselling and take immediate action if you are allotted the seat in second round. Otherwise, in 3rd round there is no guarantee that you will get that particular seat of that particular college allotted to you in 2nd round.