South African Johan Grobler (80.59m) won the silver medal.
Anderson Peters (79.65m) of Granada won the bronze medal.
Previously, IAAF Under-20 World Athletics Championship held in by Latvian Zigismunds. Neeraj Chopra broke the previous record of 84.69 meters by nearly two meters.
He is third Indian athlete who has won a medal in the junior athletics Championship in U-20 World Championships.