Dear Sanjay,

Here are some of the best colleges for BSc honors in India  - 

• Miranda house, Delhi University.
• Hindu college, Delhi University.
• St. Stephens college, Delhi University.
• Kirorimal college, Delhi University.
• Hansraj college.
• Christ University in Bangalore.
• Lady Shriram College in New Delhi.
• Atma Ram Sanatan Dharma college in New Delhi.
• Deen Dayal Upadhyaya college in New Delhi.

Regards

St Stephens College, Delhi University, New Delhi, Christ University, Bangalore , Miranda House, Delhi University ,  Sri Venkateswara College, Delhi University, New Delhi. Amity University,   Mumbai. University of Delhi [DU], New Delhi. Gargi College, New Delhi , Acharya Narendra Dev College, New Delhi.

Hello spirant,
As per your query Top B.Sc Hons Colleges in India are as follows ;
1. St Stephens College, Delhi University, New Delhi
2. Christ University, Bangalore
3. Miranda House, Delhi University
4. Sri Venkateswara College, Delhi University, New Delhi
5. Amity University, Mumbai
6. University of Delhi [DU], New Delhi
7.  Gargi College, New Delhi
8. Acharya Narendra Dev College, New Delhi
9. Singhania University, Jhunjhunu
10. DAV College, Chandigarh
Hope it helps,thank you.