Akarsh, the intention to create a whatsapp group to discuss and clear doubts is a good idea. But at times it could lead to major distraction with your study plan. You need to concentrate very hard during your examination time, even slight deviation can prove costly.
Cool, if you can exercise control over your mobile usage and use it mainly for productive purpose then it is a fair point. The only reason to caution or advice you on this front is to ensure your focus on studies do not divert unnecessarily in getting to know new people, thereby causing upheaval with your study schedule. All the best for your preparation.