Question

When fluoride is heated with conc. $H_{2}S{O}_4$ and $Mn{O}_2$ the gas evolved is __________.

• A. $HF$
• B. $F_2$
• C. $S{F}_4$
• D. None

Answer 1

The correct option is D None

Fluoride is the most electronegative element, due to this reason $MN{O}_2$ and $H_{2}S{O}_4$ are not able to oxidise flouride $\left(F\right)$ to fluorine $\left(F_2\right)$.

Hence no reaction takes place or no gas is formed.