Hi Sumantha, Firstly do not consider your 10th class result as a parameter for going into IIT. Secondly if you are unable to solve few questions in 1st attempt is okay but at least you should be able to solve after trying harder. Even after trying really hard you are unable to solve means there is something missing in your knowledge as well as concepts. Try to rectify that by clearly understanding anything conceptually and thoroughly. This can be achieved by reading theory from good books. As far as studying for long hours will come gradually by practise only. Also once you will be more strong conceptually you will start enjoying and once you will start enjoying more no. of hours will automatically be possible. Just keep working hard. Best, Neepa Shah.