Hi Fathima

If you wish to enter into IITs, you need to clear either JAM or GATE. But in IITs, they offer M.Sc in Chemistry, not in Biochemistry.

Biochemical Engineering and Biotechnology course is offered by IIT Delhi. 

But JAM and GATE deadlines for applications are over, so you can apply for other institutes which provide high-quality education like,

• TIFR
• NCBS
• IISER
• IISC

All the best.