Hello,

It really doesn't matter if you have already cleared your pending backlogs before taking admission in IITs and NITs. If you had backlogs then its completely ok but before taking admission it is mandatory for you to clear your pending backlogs. But if you can't clear the backlogs then you cannot get the certificate too. Standing backlogs Candidates are not eligible to take admission in any of the IITs and NITs. And not only these institutions but none of the institute or college will give you admission if you have a standing backlog, as that means you're not completely passed out yet. Clear all of your backlogs. If you have already cleared your pending backlogs then there is not a problem at all.

Good Luck.