According to information received here, Chauhan began poorly and trailed by five points as he tried to recover from a jittery start with a perfect 30 in the third end. His efforts were not enough as the Korean won 145-141.
It was India's second medal of the day after they opened their account with a bronze in the women's compound team event with the trio of Trisha Deb, Lily Chanu Paonam and Purvasha Shende got the better of higher-ranked Mexicans.
Both the teams shot 57 each in the opening end but India took a two-point lead shooting two perfect 10s in the next.
Mexico had four 10s in the third end as against two by India to narrow the lead to a slender one-point.
In the decider, the Indians held their nerves firing in four 10s and two 9s to clinch the issue.
India also have a third medal assured in the recurve mixed pair event where Jayanta Talukdar and Laishram Bombayla Devi will take on their Chinese opponents on the concluding day tomorrow.
