Chadha was trailing by nearly 40 points against Hritik Jain of Madhya Pradesh but set himself for a break of 96 points to recover and post a decent lead.
Jain tried to overcome the pressure and brought down his trail to 30 points but the Maharashtra lad sealed the issue in one-hour duration by 79 points (296-217).
Shrikrishna had a one-sided affair against Suraj Rathi of Maharashtra as he won 334-198 en route to the final.