Chopra, currently studying at DAV College in Chandigarh, also broke the existing national senior record of 82.23m which was in the name of Rajinder Singh.
His achievement was all the more stunning as his effort was better than that of Rio Olympics bronze-winner Keshorn Walcott (85.38m) of Trinidad and Tobago.
Chopra did not qualify for Olympics as his achievement came after the Olympics qualifying deadline of July 11 though he crossed the Rio entry standard of 83m.
Chopra also became the first Indian track and field athlete to win a gold in the World Championships. Legendary long jumper Anju Bobby George had won a bronze in the senior World Championships in 2003.
