Chasing a victory target of 301, South needed 117 runs on the final day with nine wickets intact. But on a pitch that was offering substantial turn, South lost 7 wickets for 39 runs to hand over the trophy to Chawla and co.
From a relatively comfortable 252 for three, they were all out for 291 in 88.4 overs.
Spin troika of Chawla (3/83 in 20 overs), Ali Murtaza (3/59) and Jalaj Saxena (2/44) shared the bulk of the spoils but it was Pankaj Singh (2/45)'s morning spell that started turning the complexion of the game.
It was an exciting fifth morning where there was a good contest between bat and ball. It turned out to be the best 22-yard strip produced at Feroz Shah Kotla in recent times, by one of the youngest BCCI curator Ankit Datta.
Also Read
The wicket lasted five days with something for everyone from batsman, pacers and spinners.
He bowled one that landed on a crack and kept low getting Rahul plumb in-front. The youngster's innings had played 152 balls hitting 14 fours and five sixes. Dinesh Karthik (0) bagged a 'pair' , falling to Pankaj reducing South to 203 for three.