MCQ
The correct structure of histidine in a strongly acidic solution $(pH = 2)$ is
- A

- B

- ✓

- D






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$I.\,H_2S_2O_6\,\,\,\,\,\,\,\,II.\,H_2SO_3\,\,\,\,\,\,\,\,III.\,H_2SO_5$