Groups of relatives have gathered at the Tapovan tunnel, hoping that their loved ones will emerge alive from its mouth.

It stands at a distance watching soundlessly as multiple teams work to reach those buried under mounds of debris and is sometimes heard breaking into howls of anguish -- a canine sentinel watching the rescue mission in its search for its missing puppies.

Inundated with information and long hours of test practice, aspirants are bound to commit mistakes, notes Arun Sharma, a top CAT educator at Unacademy.