Candidates may not use scratch paper during the exam.

@vincentt and @wellstate are both correct – there’s plenty of room on the question paper itself. Just don’t scribble on your exam ticket or scantron paper, or any other paper just to be safe.

You are allowed to scribble on the question papers.

I think I also read somewhere on here that there is plenty of space on the question papers as well – so you won’t have to worry about scratch paper.