MCQ
Which of the following cannot be hydrolysed
- AA salt of weak acid and strong base
- BA salt of strong acid and weak base
- CA salt of weak acid and weak base
- ✓A salt of strong acid and strong base
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$BF _{3}+ NaH \stackrel{450 K }{\longrightarrow} A + NaF$
$A + NMe _{3} \rightarrow B$

$\left[\right.$ Given $: \mathrm{N}_{\mathrm{A}}=6.02 \times 10^{23}\, \mathrm{~mol}^{-1}$, Atomic mass of $\mathrm{Na}=23.0\, \mathrm{u}]$
