Question

Which one is a sublime substance?

• A. Table salt
• B. Sugar
• C. Iodine
• D. Potassium iodide

Hint:

Common sublimable substances include:

Iodine
Naphthalene
Ammonium chloride

Answer 1

The Correct Option is C

Step 1: Recall the meaning of sublimation. Sublimation is the process in which a substance changes directly from the solid state to gaseous state without passing through the liquid state. Step 2: Analyze the given substances.

Table salt: Does not sublime
Sugar: Decomposes on heating, does not sublime
Iodine: Sublimes on heating — correct
Potassium iodide: Does not sublime
Step 3: Final conclusion. The substance that shows sublimation is iodine. \[ \boxed{\text{(C)}} \]