Question

Is boric acid a protic acid? Explain.

Answer 1

Boric acid is not a protic acid. It is a weak monobasic acid, behaving as a Lewis acid.
$B(OH{)}_3+2HOH⟶{\left[B\right(OH{)}_4]}^{-}+H_3{O}^{+}$
It behaves as an acid by accepting a pair of electrons from ${}^{-}OH$ ion.