Chaudhary won both the individual as well as the Team gold in the men's 10m Air Pistol Youth event, while Bhaker clinched a silver in the women's 10m Air Pistol Youth.
India claimed another silver in junior women's 10m Air Pistol.
In all, India added four medals to their kitty on the final day of the competition to finish with a total haul of 21 medals over four days, including six gold, eight silver and seven bronze, besides four YOG quotas.
Both shot a score of 378, while Yogita shot 372 to finish in 11th place.
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Their combined score of 1128 helped them claim a Team silver behind Iran with 1144 and ahead of Korea, who logged a total of 1122.
In the final, Yashaswini shot 195.7 to finish fourth while Mahima ended sixth on a score of 155.4. Yan Chen of China won gold in the event, creating a World and Asian Record score of 240.1, beating Veronika Major and Yashaswini's score of 235.9.
The trio won the Team gold with a combined effort of 1711, 11 points clear of the silver winning Korean team and 19 ahead of China, who won bronze.
Chaudhary then came up with a start to finish effort in the final, finishing with a score of 243.1 to win gold and seal the first of the three available quotas for the YOG in the process.
Arjun managed sixth place with 156.8.
In the women's 10m Air Pistol Youth, Bhaker topped qualifying with a score of 382 and was the only Indian to reach the final.
Priya Raghav shot 368 to finish 16th and Anushka Patil shot 365 to finish 22nd.
Bhaker though had a horrid start to the final, lying eighth after 10 shots, she recovered wonderfully to win a silver, eventually getting piped by China's Jiaruixuan Xiao by a margin of 0.1.
China's Xue Li won bronze with 215.5 and third quota place available, while Thailand's Kanyakom Hirunphoem came fourth to bag the final quota place.
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