Question

Which one of the following does not undergo sublimation?

• A. iodine
• B. sodium chloride
• C. ammonium chloride
• D. None of these

Answer 1

The correct option is B

sodium chloride

Explanation for correct option

(B) Sodium chloride

Sublimation

• Sublimation refers to the passage, change, or conversion of substances when they transfer from a solid to a gas state, without undergoing liquid state.
• At normal temperatures and pressures, a variety of solids, including solid carbon dioxide, can sublimate.
• Other materials can be made to sublimate by putting them in a low-pressure condition.

Sodium chloride

• Sodium chloride does not show direct change from a solid state to a gas state.
• Sodium chloride does not undergo sublimation.

Thus, the correct option is sodium chloride.

The explanation for incorrect options

On gentle heating, iodine and ammonium chloride undergoes sublimation, but sodium chloride does not. Therefore, options (A), (C), and (D) are incorrect.

Hence, the correct option is (B), Sodium chloride.