Question

Which of the following dissolves in water but does
not give any oxy acid solution?

• A. $F_2$
• B. $NaF$
• C. $N{a}_{3}A1F_3$
• D. $H_{2}Si{F}_6$

Answer 1

Answer: (A), (B)

The correct options are
A $F_2$
B $NaF$

Fluorine dissolves in water to form HF.
$F_2+H_{2}O\to 2HF+\frac{1}{2}{O}_2$
This shows oxidizing nature of fluorine. It spontaneously oxidizes water to oxygen.
Similalry NaF dissolves in water but it does not forms oxy acid solution.