Dear candidate,

Is it important to handover our rough sheets for safety purposes so that they make sure that you cannot convey the information related to question through the use of paper, though you have remembered the questions in mind, but they can't be accurate when compared to writing exact question in paper and showing them  to your friends who is about to write the exam in next shift or next days. Also they ask you to write name and roll number in order to ensure that invigilators have collected all student's rough sheets. That's it ,not for other purposes, they never evaluate what you wrote on your rough paper.

Thank you.

It is compulsory ti submit your rough paper to invigilator because some papers are not ment to be public and that's the reason rough paper is submitted at center some students write on paper and they can leak paper to some one that's why it is necessary to submit rough paper at centre

Dear candidate

It is important to Handover your roughsheet with name and rollnumber to invigilator inorder to make sure that this particular candidate did not use roughsheet for any malpractice of any kind in the examination that is the reason for this so, Handover your roughsheet with name and roll number to invigilator.

Hope this Information is helpful