There are few effective ways to do this . i will share my method herein India usually , exams like NEET, UPSC are held in government and private schools . sometimes you are lucky enough to get a proper sitting facilities . In most of the cases , you wonu2019t feel much comfortable sitting for straight 3 hrs in those primary classrooms and coming to OMR sheet , we all have the fear of disqualification in case of tampering , folding . so , i suggest you to put the OMR sheet given to you in the desk or away from you on the bench so that it is not folded up in your hands while solving the questions .to start solving , divide the time and questions . explaning with an example , if there are 100 questions and 120 minutes .solve the first 50 questions in 60 minutes u2026dont touch your OMR sheet until you finish these 50 questions ( finish here means to solve if you only know them . dont waste your time solving new oneu2019s which you have no idea) . start solving in your question paper itself . After solving grab your OMR and start bubbling the questions until 60 whichever is solved and keep OMR away from youNow, solve the half of the remaining questions i.e 25 questions in other 30 minutes and then repeat the same processNow you are left with 30 minutes and 25 questions . There is a danger of invigilator grabbing your OMR at end of the exam . so dont take any chance . you have to change the strategy here . you have to put the OMR sheet in front of you and after solving each question , bubble simultaneously .so even in the worst case , you will be able to solve maximum questions .after solving everything , if you are left with anytime , start solving the unsolved if there is no negative marking . i ahve no idea about NEET so i have answered in general prospective .thanks for A2A Sofikul Islam