PHYSICS 10 SCIENCE · 2026–27 · From the chapter · exam-style questions · p. 10–12

Practice question from chapter text

Compare evaporation and boiling, including four factors controlling evaporation.

تبخیر اور ابال کا فرق اور تبخیر کے چار عوامل بیان کریں۔

Solution & explanation

Evaporation occurs at a liquid surface over a range of temperatures. Boiling occurs throughout the liquid when vapour pressure equals external pressure. Higher temperature, larger exposed area, drier air and air movement generally increase evaporation by helping energetic molecules escape and removing vapour.

Independent study material · English-medium textbook p. 10–12 · Original book ↗