Hello Aspirant,

See mid terms are the internal matter of the colleges and rules are decided by college authorities which can vary from college to college. Most commonly for mid-terms, if you get failed they provided you another chance to appear for it and for free of cast you will not have to pay any fee like Back fee or any other kind of fee but some colleges charge so you have to contact to your college authorities for the same. There is nothing to worry if you got failed in 1 mid-term, you will definitely have chance to improve your score, so what I would recommend is to contact your college authorities for the same, they can guide you in much better way.

I hope this information helps you.

Good Luck!!