| स्तंभ-$1$ (अम्ल) | स्तंभ-$2$ ($pK_a$ मान) |
|---|---|
| $A. CH_3COOH$ | $I. 0.23$ |
| $B. F_3CCOOH$ | $II. 3.41$ |
| $C. \text{बेंजोइक अम्ल}$ | $III. 4.19$ |
| $D. p\text{-नाइट्रोबेंजोइक अम्ल}$ | $IV. 4.76$ |
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