Hi aryan

First of all you should decide which area of research interests you. Based on you need to check out the options available to reach the same. Like if you would like to be in the field of genetics then you must first complete B.Tech, then pursue M.Tech. After that you must appear for the NET exam. You will then be eligible to enter the field of research. Moreover You can do simply B.Sc. in Biology and further M.Sc. from a reputed institution for career as a scientist. After M.Sc. you will be required to do Ph.D.
According to your interest you can choose Botany or Zoology. You can take admission in B.Pharm. and further M.Pharm. for research works related to pharmaceuticals. You can go for MBBS and then further higher studies oriented to research work. To become a scientist is not an easy task. It is not like becoming an engineer or doctor. You will have to get in research field and then your research and project works will decide when you will become a scientist.
So, don't think that when will you become a scientist.
Just keep on doing research work, you will become a scientist on time.

Good luck

Hey buddy, there are scientists in many fields. So 1st choose your field in which you want to become a scientist.
Get a Bachelors/Masters and a PhD (potentially even a post doctorate) to become a reputed scientist. There are many jobs available after a Masters program, but a PhD will be required to progress in the field.
scientists requires very very good math, very good computer skills since they are dealing with large amounts of research data.
Take the most advanced math you can, learn programming and how to apply it to research data, and study the subject you want to research in your free time. That is why you're becoming a scientist right.