Question

If naphthalene balls are kept at room temperature then it undergoes the phase transition. Which of the below mentioned is correct in regard to naphthalene balls:-

• A. Evaporation
• B. Ebullition
• C. Condensation
• D. Sublimation

Answer 1

The correct option is C

Condensation

If naphthalene balls are kept at room temperature, so they get enough temperature such that their kinetic energy (movement of particles) increases and they show a phase transition directly from solid to the gas state. The transition of the substance directly from solid to gas phase, without passing through the intermediate liquid phase is called sublimation.