Is it necessary to write the question number on every page of the?
Write at the beginning, from where you started the answer. No need to write the question number on every page of the answer sheet. Write the correct question numbers legibly. If possible write all sub questions at a stretch, that is, for example answer 3 a) b) c) continuously. dont intermix other answer in between, that is dont write answers like 1 a), 3 b), 2 a) , 1 c), 2 c) which will make the evaluator more stressfull.