If I Qualify JEE Mains in 3rd attempt with under 100 rank then are there any problems in campus placements

Hello..!
I am very happy to see these type of questions. As, your thinking ahead than many others before taking a decision.
Coming to the answer,
Almost in all the NITs and IITs the campus placements will depend on CGPA that you have acquired in those 6-7 semesters, the knowledge you have, communication skills, etc.,
There are very few companies may be a single digit which disqualifies by age factor.
If you have a good stuff with you, no company will disqualify you.
Think about you and your future and take your decision.

Hi Shivam.
The number of times you gave JEE won't affect your placements by even the slightest margin.
Even your JEE rank doesn't matter during placement time.
The only thing that matters during the placement is the minimum CGPA required for applying for any company and the skills required.
But you should be sure of yourself before dropping for the 2nd time as it will be your last and only attempt. Go for it only if you are sure of giving your 100%.
All the best

Hello Sivam
There is no any problem create in campus placement .
It is good for you if you will be getting under 100 rank in Jee main . You can get admission in one of the  top engineering college of India .
Even no one knows that you are coming here by third attempt of Jee .
It doesn't create any problem in campus placement .
Thanks
Best of luck