The 18-year-old shot 250.8 in the final to get the better of Italy's Nicole Gabrielli (249.7) by 1.1 point. She had also topped the qualification with 628.0.
The other Indian shooter in the final, Shreya Agrawal finished fourth with 206.6.
Also, the Indian junior men swept the three medals in the 25-metre sports pistol, with Rajkanwar Singh Sandhu winning the gold with 586, one point ahead of Vijayveer Sidhu.
Udhayveer Sidhu bagged the bronze medal with 582.
"It feels great but more importantly it was important to maintain the consistency of points. I am happy, that I could score as planned. These are important exposure tournaments for Asian Games and my goal is to do well there," Elavenil said after her win.
Yesterday, extending her golden run, teenager Manu Bhaker won her ninth international gold medal in the last one year and talented Anish Bhanwala also emerged champion in their respective pistol events.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)