Is there any tution fee waiver scheme in MBA..I heard that aicte has extended tfws scheme to MBA also from 2018.

Hello Rajat,
AICTE TFWS scheme is basically for technical education stream i.e  engineering admissions. So, here you can't take the benefit of this scheme. But if you belong to minority caste or other reserved caste then you can apply for central sector schemes for minorities.
If not then there are other scholarships and grants if you apply and get shortlisted you might get benefit of it. Even few colleges have there own scholarship policies or tution waiver scheme. So, while applying for the college look into that matter too.
Also, you can avail student loan for your education if you find is feasible.

I am aware about one such foundation, you should once look into it.

1. Narotam sekhsaria foundation
Link: https://pg.nsfoundation.co.in/admission-process
It is one of the bestest option for you. And your cmat score also will play an advantage in it.

I hope this helps you.

All the best !!