How many questions do you need to pass?

Pick your paper. Enter your last mock to see how far you are from the mark.

Your paper

Part I: 110 questions, 75% to pass

83 right

You can miss 27.

Your last mock, questions right

Part II: 40 questions, 80% to pass

32 right

You can miss 8.

Your last mock, questions right

RES 5 runs 3 hours. Wrong answers lose nothing, so never leave one blank.

See RES 5 practice

Question counts and pass marks from SCI's exam pages, read 2 November 2026. We're not affiliated with SCI, so check your own paper's page before you book.