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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Diffusion

Jamb Physics Questions - Diffusion

Question 11:
A 3m3 volume of liquid W of density 200kgm3 is mixed with another liquid L of volume 7m3 and density 150kgm-3. the density of mixture is?
  • A 165kgm<sup style='font-size: smaller;'>-3</sup>
  • B 100kgm<sup style='font-size: smaller;'>-3</sup>
  • C 265kgm<sup style='font-size: smaller;'>-3</sup>
  • D 350kgm<sup style='font-size: smaller;'>-3</sup>
View Answer & Explanation
Question 12:
The process whereby the molecules of different substances move randomly is called?
  • A Capillarity
  • B Surface tension
  • C Osmosis
  • D Diffusion
View Answer & Explanation
Question 13:
The difference observed in solids, liquids and gases can be accounted for by
  • A The different molecules in each of them
  • B The spaces and forces acting between the molecules
  • C Thier melting points
  • D Their relative massess
View Answer & Explanation
Question 14:
A solid weigh 10 .00 N in air, 6 N when fully immersed in water and 7 . 0 N when fully immersed in a liquid X. Calculate the relative density of the liquid, X.
  • A 5/3
  • B 4/3
  • C 3/4
  • D 7/10
View Answer & Explanation
Question 15:
A piece of cork floats in a liquid. What fraction of its volume will be immersed in the liquid?
[Density of the cork = 0.25 x 103kgm-3, Density of the liquid = 1.25 x 103kgm-3]
  • A 0.8
  • B 0.5
  • C 0.2
  • D 0.1
View Answer & Explanation