The way students handle pressure and uncertainity is an important and crucial factor of CAT. This is vital skill that managers require in his/her daily decision making process. Those students who are able to face the pressure during the first 10-15 minutes, chances of excelling increases. Here are some tips that may help u excel during exam time:

Scan your question paper for the first three four minutes to locate easy questions
Attempt the section that u are sure of cracking first..
Have a flexible strategy
CAT is a synonym to uncertainity

Yes, anyone can clear CAT in his/her first attempt, but what matters here is sharp minds and instantaneous decision making ability. Obviously correct outlook plays an important role too, and so a person needs to relate the bookish matter to real life conditions.