Question

Which from following statements is NOT true for phenol?

• A. Phenols are polar molecules.
• B. Pure phenol is odourless, nontoxic, high melting solid.
• C. Boiling points of phenols increases with increase in molecular mass.
• D. Phenols show appreciable solubility in water.

Hint:

Phenol was famously the first surgical antiseptic (carbolic acid) introduced by Joseph Lister. Its powerful, characteristic medicinal smell is unmistakable in classic medical settings.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Phenol ($C_6H_5OH$) has distinct physical and chemical properties due to the hydroxyl group attached to the benzene ring.

Step 2: Formula Application:
Evaluate each statement based on known physical constants of phenol.

Step 3: Explanation:
Statement (b) is incorrect. Pure phenol is actually toxic (corrosive to skin), has a very characteristic "phenolic" or medicinal odor, and is a low melting solid (m.p. approx 41°C). Phenols are indeed polar (a), show increased boiling points with mass (c), and can form hydrogen bonds with water, making them somewhat soluble (d).

Step 4: Final Answer:
Statement (b) is the false statement.