MCQ
During estimation of oxalic acid $\,\,$ Vs $\,\,KMnO_4,$ self indicator is
- ✓$KMnO_4$
- Boxalic acid
- C$K_2SO_4$
- D$MnSO_4$
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$(I)$ $XeF_6 +NaF \to Na^+ [XeF_7]^-$ $(II)$ $2PCl_5(s) \to [PCl_4]^+[PCl_6]^-$
$(III)$ $[Al(H_2O)_6]^{3+} + H_2O \to [Al(H_2O)_5OH]^{2+} + H_3O^+$
Possible transformations are:
$(A)$ $\alpha$ -sulphur
$(B)$ $\beta$ -sulphur
$(C)$ $S _{2}$ -form