Rana gave himself an early birthday gift with the gold medal.
He ran out a fairly comfortable winner without matching the 77.22m which he posted as his personal best in Delhi on December 17.
Meanwhile, Maharashtras tribal wonder Tai Bamhane, who clocked a personal best time of 4:25.66 in the Asian Area qualification leg of the Youth Olympic Games, was not at her best in the girls under-17 1500m final.
Having decided late to enter the competition, she tried to go past Uttarakhands Ankita and Haryanas Pooja with a lap to go, but did not have the energy to sustain her pace.
Tamil Nadus Karuniya Muthuramalingam, who turns 19 on Friday, was another athlete who gifted herself an early birthday present with the girls Under-21 discus throw title, beating back Arpandeep Kaur Bajwa (Punjab) and Seema from Haryana, the release added.
Arpandeep, 19, had come here on the back of a personal best of 49.97m in the Inter-University championships.
Karuniya, however, came up with an effort of 46.60m that was her best since the 48.58m she recorded at the South Asian U20 championship last May.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)