The basic educational qualification required for the examination of NIMCET is provided below:

i) The student need to pass B.Sc. / B.Sc. (Hons) / BCA / BIT of minimum three years full-time from a recognized university or college. or the student may do the course of BTech.

ii) For a general Unreserved category & OBC student its required that the student must have atleast 60% or 6.5 CGPA out of 10 point scale in graduation and for other categories such as ST & SC the student must have 55% marks or 6.0 CGPA out of 10 point scale.

So if you have supplementary there is no problem, but make sure that you satisfy the marks criteria as per your category.

For more information regarding NIMCET consider the link below:

https://it.careers360.com/articles/nimcet-eligibility-criteria

I hope this helps. Wish you a great eve!