Question

Naphthalene balls kept in coat pockets disappear after a few months due to ____________.

Answer 1

• The conversion of a solid phase substance directly into its gaseous form without passing through the intermediate liquid phase is known as sublimation.
• Substances like dry ice(solid CO₂), ammonium chloride(NH₄Cl), etc easily undergo sublimation.
• Naphthalene balls that are in a solid state can sublime and disappear as time passes.
• Thus, naphthalene balls kept in coat pockets disappear after a few months due to sublimation.