Hello dear,
.
As you are science student and wanted to refer for BA..
It depends on College to college and state to state.
As some colleges will conduct where some of them will not.
Anyhow if you are preparing for entrance test The subjects you will be getting  will mostly be dependent on knowledge and current affairs .
.
Here is the list of subjects you will be getting
.

• Language for 25Q
• General awareness for 25Q
• General mental ability for 25Q
• And 75Q of subjects (Geography, civics, economics, history,logic, )

These are more enough to prepare for entrace exam.
.
Best of luck.
Thank you