The question asks for the number of molecules which can exhibit hydrogen bonding, but the actual list/structures of the molecules is missing from the prompt.

So, as stated, the problem is incomplete: without knowing which molecules are being referred to, the number cannot be derived logically.

Step 1: What is needed for hydrogen bonding?

A molecule can exhibit hydrogen bonding if it has:

1. A highly electronegative atom such as $\mathrm{N}$, $\mathrm{O}$, or $\mathrm{F}$.
2. A hydrogen directly bonded to one of these atoms for intermolecular H-bond donation, or a lone pair on such atoms for H-bond acceptance.

Typical molecules showing hydrogen bonding include:

• $\mathrm{H_2O}$
• $\mathrm{NH_3}$
• $\mathrm{HF}$
• alcohols, carboxylic acids, etc.

Step 2: Issue with the given question

The statement says:

"Number of molecules from the following which can exhibit hydrogen bonding..."

But the "following" molecules are not provided.

Hence, the answer cannot be computed from the given data.

Step 3: Comparison with stored answer

The stored correct answer is 5, but since the molecule list is absent, I cannot independently verify that value.

Therefore, I must disagree with the stored answer on the basis that the question is incomplete in the prompt provided.