Even though phenyl group $(- C_{6} H_{5})$ is electron attracting group, formic acid is a stronger acid than Benzoic acid due to

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+R effect < I effect

+R effect > I effect

Both +R effect operates delocalisation

Only higher -I effect

answer is B.

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Detailed Solution

Solution: Positive resonance effect of phenyl group is greater than negative inductive effect leads the formic acid stronger. In formic acid the Hydrogen atom connected to COOH act as neutral group.

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