According to information received here, Chauhan, who was the first Indian compound archer to have qualified for the showpiece event, led 117-116 after four ends.
But the Rajasthan lad conceded the lead in the final set of arrows after firing a poor 28 against the Frenchman's 30 for the heartbreaking loss in the opening round.
Based on their cumulative scores over four stages of the World Cup, the top eight in each category had made it to the Finals.
Chauhan qualified by virtue of being sixth in the rankings.