Printed textbook model paper
How does evaporation contribute to everyday cooling?
تبخیر روزمرہ ٹھنڈک کیسے پیدا کرتی ہے؟
Solution & explanation
Higher-energy surface molecules escape. The remaining liquid loses energy and its average molecular kinetic energy can fall; sweat cooling is an example.
Independent study material · English-medium textbook p. iii · Original book ↗