Hi there. 

As the tag you have mentioned is of Mount Carmel College, Bangalore, I'm assuming that your question is regarding this specific College. 

Now, if you pursue an undergraduate course in Psychology then along with Psychology you'll have to choose 2 subjects which are called General subjects (Psychology would be your Major subject). 

When it comes to MCC, Bangalore, there are a lot of options that you can choose from, some of the combinations are mentioned below: 

1. Psychology, Sociology, Economics

2. Psychology, English literature, Journalism

3. Psychology, English literature, Communication studies.

4. Psychology, English literature, Economics

5. Psychology, Physical education, Tourism and Travel management.

6. Psychology, English literature, Sociology. 

You can choose from any of the options above if you choose to do BA in Psychology. 

When it comes to BSc you can go for combinations like Psychology, Botany, Chemistry or Psychology, Chemistry, Physics. 

It all depends on your interest and the college's availability of courses. 

You'd be told about the existing subject combinations when you send in your application for admission in Psychology. 

Hope this helps. 

Good luck!