PHYSICS 10 SCIENCE · 2026–27 · Q1 · 12 MCQs · 12 marks · p. ii

Printed textbook model paper

The latent heat of vaporization of water is:

پانی کی مخفی حرارتِ تبخیر ہے:

  1. (a)

    2.26 × 10⁶ J

    2.26 × 10⁶ J

  2. (b)

    2.26 × 10⁶ J kg⁻¹

    2.26 × 10⁶ J kg⁻¹

  3. (c)

    2.26 × 10⁵ J

    2.26 × 10⁵ J

  4. (d)

    2.26 × 10⁵ J kg⁻¹

    2.26 × 10⁵ J kg⁻¹

Solution & explanation

Correct choice(s): (b)

(b) 2.26 × 10⁶ J kg⁻¹: specific latent heat is energy per unit mass.

Independent study material · English-medium textbook p. ii · Original book ↗