Is after completing bsc in science doing b.ed is good option or not

Hi Naini,
After doing B.sc B.ed you can become a teacher in any private or govt. Institutions or you can open your coaching or tuition centre as well.

You can also go for M.Sc in any of the field like chemistry biology etc. rather than B.ed which can immensely help you in becoming a researcher and if you do M.sc in chemistry you can become quality manager etc.
You can even become a lecturer by this.
You can have great career options like lab technician, manager , professor etc. but it all depends upon you interest.
If you are interested in becoming a teacher you can go for B.ed , but if you want to explore more and want great career opportunities, you can go for Masters.

Hope it helps.

Best Wishes