MCQ
The following reaction is


- ✓Nucleophilic substitution
- BElectrophilic substitution
- CFree radical substitution
- DNone of these

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Statement $I:$ Iron $(III)$ catalyst, acidified $K _{2} Cr _{2} O _{7}$ and neutral $KMnO _{4}$ have the ability to oxidise $I$ to $I _{2}$ independently.
Statement $II$: Manganate ion is paramagnetic in nature and involves $p \pi- p \pi$ bonding.
In the light of the above statements, choose the correct answer from the options.

$(A)$ It behaves as a weak acid in water due to self ionization.
$(B)$ Acidity of its aqueous solution increases upon addition of ethylene glycol.
$(C)$ It has a three dimensional structure due to hydrogen bonding.
$(D)$ It is weak electrolyte in water.