$Fluorine$ does not form positive oxidation states because

Which of the following is $NOT$ a characteristic of interhalogen compounds?

$HBr$ and $HI$ reduce sulphuric acid,$HCl$ can reduce $KMnO_4$ and $HF$ can reduce:

Consider the following reactions:
$(A) (\text{Ionic halide}) + (B) (\text{Good oxidising agent}) + \text{conc. } H_2SO_4 \to (C) (\text{Red-Orange gas is evolved with few by-products})$
$(D) (\text{Other ionic halide}) + (B) + \text{conc. } H_2SO_4 \to (E) (\text{Has same colour as } (C))$
Which of the following properties are different for $(C)$ and $(E)$?

Aluminium trifluoride is insoluble in anhydrous $HF$ but dissolves on addition of $NaF$. Aluminium trifluoride precipitates out of the resulting solution when gaseous $BF_3$ is bubbled through. Give reasons.

Write the preparation of interhalogen compounds and state their uses. Discuss the properties of interhalogen compounds.