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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Diffusion

Jamb Physics Questions - Diffusion

Question 6:
If a solid changes directly into a gas when heat is applied the process is called
  • A Vaporization
  • B Evaporation
  • C Sublimation
  • D Ionization
  • E Conversion
View Answer & Explanation
Question 7:
40m3 of liquid is mixed with 60m3 of another liquid Q. If the density of P and Q are 1.00kgm-3 and 1.6kgm-3 respectively, what is the density of the mixture?
  • A 0.05kgm<sup style='font-size: smaller;'>-3</sup>
  • B 1.25kgm<sup style='font-size: smaller;'>-3</sup>
  • C 1.30kgm<sup style='font-size: smaller;'>-3</sup>
  • D 1.36kgm<sup style='font-size: smaller;'>-3</sup>
View Answer & Explanation
Question 8:
200g of water at 90°C is mixed with 100g of water at 30°C. What is the final temperature?
  • A 50<sup style='font-size: smaller;'>o</sup>C
  • B 60<sup style='font-size: smaller;'>o</sup>C
  • C 70<sup style='font-size: smaller;'>o</sup>C
  • D 80<sup style='font-size: smaller;'>o</sup>C
View Answer & Explanation
Question 9:
If a solid X floats in liquids P of relative density 2.0 and in liquid Q of relative density 1.5, it can be inferred that the
  • A Weight of P displaced is greater than that of Q
  • B Weight of P displaced is less than that of Q
  • C Volume of P displaced is greater than that of Q
  • D Volume of P displaced is less than that of Q
View Answer & Explanation
Question 10:
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