there was negative marking for the extra 12 question but.....u see i made 41 questions wrong this mean "-41" marks but i attempted all 12 ques correctly. this means "+36"....... this mean only 5 marks were deducted from my paper......so its very important to attmpt those 12 question.......as far as i know everyone is getting different types of paper.......one of my frnds also got question from this biomolecules........