Dear Babuli,

Yes, definitely you can pursue M.tech chemical engineering or M.tech Biotechnology after Msc. Chemistry. Also, it depends  and varies from University to university too as every University has its set if rules and regulations. It will better if you choose the college or university you wanna puruse M.tech and go through their policies. Also, you can enquire by contacting them online or by visiting the campus. Feel free to drop such queries related to this or else. We are always ready to help you.

Hope this resolved your query.

All the Best!!