Question

Which of the following order represent acidic strenght of (I) benzoic acid. (II) 4-nitrobenzoic acids. (III) 3,4- dinitro benzoic acid and (IV) 4-methoxy benzoic acid ?
A. `I lt I lt III lt IV`
B. `IV lt I lt II lt III`
C. `II lt III lt I lt IV`
D. `IV lt II lt III lt I`

Answer 1

Correct Answer - B
Increasing order of acidic strength is 4-methoxy bezoic acid `lt` benzoic acid `lt` 4-nitrobenzoic acid `lt3,4`- dinitrobenzoic acid.