Hello Irshath,Greetings from Careers36o.com!

At first you must realise that cracking an university exam is more simpler than your board exams.Ifyou can clear the 10th and 12th exams,you  can definitely clear these exams too.Try to combine hard work with smart work.Take time and go through the previous year's question papers and find answers for those.Finally study all those important topics in particular subject.

Hope this helped you.All the best!