$HNO_3$ in liquid hydrogen fluoride behaves as:

The dissociation of $H_3PO_4$ takes place in how many steps?

Which of the following acids would have a $STRONGER \ CONJUGATE \ BASE$?
$(A)$ $H_2S$ $(1)$ vs $H_2O$ $(2)$
$(B)$ Glutarimide $(3)$ vs Piperidin$-2-$one $(4)$
$(C)$ $CH_3C \equiv CH$ $(5)$ vs $CH_3CH = CH_2$ $(6)$

Which one is a Lewis acid?

Ammonium hydroxide $(NH_4OH)$ is a:

In which of the following neutralisation reactions will the heat of neutralisation be the highest?