Hyy Akshara
Yess you can get admission in Ferguson College. Their basic Eligibility requirements for Undergraduate Course are:-
-You must have cleared 12th  in any stream with minimum 50-60% from any recognized board.
- Admission for B.A psychology is totally based on Merit Basis.

For, Indian institute of psychology and research.
- Minimum of 40% marks or equivalent in PUC/12th
- Admissions are on Merit Basis.

As you mentioned you have 81% so you are 100% eligible to take Admissions in both the Institutes.
Good luck for Admissions.

Hope this helps you out.
For more information or queries please ask in comment section.