Dear Akash,

You may be asked to take a GRE Subject Test that’s closely related to your major. If a school you’re applying to doesn’t require a GRE Subject Test, but you want to take one that will increase your chances of acceptance, you’ll again want to take an exam that’s clearly related to your field of study.

ETS offers six different GRE Subject Tests, in the content areas of Biology, Chemistry, Literature in English, Mathematics, Physics, and Psychology