Prelims is the first lap that you need to cross anyhow to showcase your mettle. And, the biggest hurdle in crossing this lap is that you are not practicing the key and crucial facets which you have tapped the least or not done. It is the right time, even from the start when you are nurturing yourself to be ready for one of the toughest exams on this planet. Make sure that before you write the Prelims, you have an exposure of questions of every type in the full-fledged manner.