Question

Which of these have inter-molecular hydrogen bond?

• A. $K{H}_{2}P{O}_4$
• B. $H_{3}B{O}_3$
• C. $C_6{H}_{5}COOH$
• D. $C{H}_{3}OH$

Answer 1

Answer: (A), (B), (C), (D)

$C{H}_{3}OH$

For H-bonding, H should be attached to a highly electronegative atom.

$K{H}_{2}P{O}_4$ is very similar to $H_{3}P{O}_4$. From VSEPR, you will see that H-bonding condition is satisfied.
From VSEPR, $K{H}_{2}P{O}_4$ looks like

$H_{3}B{O}_3$ looks like

Each H is attached to O and can form H-bonding.

Benzoic acid can form H-bonding by using H attached to O in the -COOH part.

In methanol

$\left(C{H}_{3}OH\right)$, the H atom attached to the electronegative O will form intermolecular H-bond with other methanol molecule.

Thus, A, B, C and D are right.