Interested students can attempt to complete the Fresher's Tasks - It is a series of tasks which test aspects like your problem solving skills, the ability to decompose a problem into sub-problems to solve it, and most fundamentally - the ability to learn to learn. Remember - unless the foundations are strong, nothing solid can be built on the top, the goal of these tasks is to to get yourself acquainted with learning and acquiring skills by your own.
Do not expect to find the solutions with a simple google search, while there is no exact list of topics on which these tasks will be based on, it is guaranteed that only the fundamentals would be tested. Your overall performance will be judged by seniors headed by Pavan sir, who have been involved throughout the selection process.
We understand that not all students join an engineering course with experience in computers so they also have the option to gain entry through workshops. A two week workshop will be conducted for first years to educate them on the basics required to be a successful programmer.