I want to know about the best colleges that can joined in the research field ?
Good to hear you are interested in research, that’s pretty rare these days.
However, you cannot pursue research after 12th. It can only be done after your Masters (MSc, MBA etc.,).
If you are talking about BSc, then you may check out the list of top ranked colleges in India from the India Today website viz., http://indiatoday.intoday.in/bestcolleges/2017/
Their rankings are pretty fair and reliable too. All the best !!