MCQ
The basicity of orthophosphoric acid is
- A$2$
- ✓$3$
- C$4$
- D$5$

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product $(A)$ is
(image) $\xrightarrow{{SOC{l_2}}}\,B\,\xrightarrow{{N{H_3}}}\,C$$\,\xrightarrow[{B{r_2}}]{{NaOH}}\,D$
