Question:
Naphthalene is purified by
Naphthalene is purified by
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Solid to Gas directly? Think Naphthalene, Camphor, and Iodine.
Updated On: May 25, 2026
- Sublimation
- Steam distillation
- Crystallization
- Distillation
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The Correct Option is A
Solution and Explanation
Step 1: Concept
Sublimation is a physical process where a solid changes directly into a gas without passing through the liquid phase.
Step 2: Meaning
Purification involves separating a compound from non-volatile impurities using its specific physical properties.
Step 3: Analysis
Naphthalene has a high vapour pressure at temperatures below its melting point, allowing it to sublime easily. Non-volatile impurities do not sublime and are left behind.
Step 4: Conclusion
Sublimation is the most efficient and standard method for purifying naphthalene. Final Answer: (A)
Sublimation is a physical process where a solid changes directly into a gas without passing through the liquid phase.
Step 2: Meaning
Purification involves separating a compound from non-volatile impurities using its specific physical properties.
Step 3: Analysis
Naphthalene has a high vapour pressure at temperatures below its melting point, allowing it to sublime easily. Non-volatile impurities do not sublime and are left behind.
Step 4: Conclusion
Sublimation is the most efficient and standard method for purifying naphthalene. Final Answer: (A)
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