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Class XI · Physics

Properties of Solids and Liquids: NEET MCQ practice

467 practice questions on Properties of Solids and Liquids, each with an explanation. Practise them chapter by chapter in the GyaanLoop app.

467

Practice questions

221

Easy

237

Medium

9

Hard

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What Properties of Solids and Liquids covers

Topics in the NEET (UG) 2026–27 syllabus for this chapter.

  • Elastic behaviour, stress-strain relationship, Hooke's law, Young's/bulk/rigidity modulus
  • Pressure due to a fluid column, Pascal's law and applications
  • Viscosity, Stokes' law, terminal velocity, streamline and turbulent flow, critical velocity
  • Surface energy and surface tension, angle of contact, drops/bubbles/capillary rise
  • Heat, temperature, thermal expansion, specific heat capacity, calorimetry
  • Change of state, latent heat, heat transfer- conduction, convection, radiation

Sample questions on Properties of Solids and Liquids

Try each one, then open the answer and explanation.

Question 1 · Practice question

Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : A body that is a good radiator is also a good absorber of radiation at a given wavelength. Reason : According to Kirchhoff's law the absorptivity of a body is equal to its emissivity at a given wavelength.

  1. A.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
  2. B.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
  3. C.C. If assertion is true but reason is false.
  4. D.D. If the assertion and reason both are false.
Show answer

Answer: A. A. If both assertion and reason are true and the reason is the correct explanation of the assertion.

Kirchhoff’s law states that at a given wavelength, a good absorber of radiation is also a good emitter. Therefore, the assertion is true and the reason correctly explains it. A student who knows this law will see the direct link and pick the correct option without any extra steps.

Question 2 · Practice question

Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Temperatures near the sea coast are moderate. Reason : Water has a high thermal conductivity.

  1. A.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
  2. B.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
  3. C.C. If assertion is true but reason is false.
  4. D.D. If the assertion and reason both are false.
Show answer

Answer: C. C. If assertion is true but reason is false.

Coastal temperatures are moderate because water has a high specific heat capacity (not high thermal conductivity), which allows it to absorb and release heat slowly, reducing temperature extremes. The reason incorrectly attributes the moderation to high thermal conductivity, which concerns heat transfer rate, not heat storage capacity. Thus, the assertion is true but the reason is false.

Question 3 · Practice question

Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Bodies radiate heat at all temperatures. Reason : Rate of radiation of heat is proportional to the fourth power of absolute temperature.

  1. A.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
  2. B.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
  3. C.C. If assertion is true but reason is false.
  4. D.D. If assertion is false but reason is true.
Show answer

Answer: D. D. If assertion is false but reason is true.

The assertion is true: all bodies at any temperature above absolute zero emit thermal radiation. The reason is also true: the Stefan-Boltzmann law states that the rate of energy radiated is proportional to the fourth power of absolute temperature. However, the reason describes how the rate varies with temperature, but does not explain why radiation occurs at all temperatures – that's a separate fundamental property of matter. Hence both are true, but the reason does not correctly explain the assertion.

Question 4 · Practice question

Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : A brass tumbler feels much colder than a wooden tray on a chilly day. Reason : The thermal conductivity of brass is less than that of wood.

  1. A.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
  2. B.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
  3. C.C. If assertion is true but reason is false.
  4. D.D. If the assertion and reason both are false.
Show answer

Answer: C. C. If assertion is true but reason is false.

Brass feels colder because it conducts heat away from your skin faster than wood does, so the assertion is correct. The reason states the opposite—that brass has lower thermal conductivity—which is false, since metals like brass have higher thermal conductivity than wood. Hence, only the assertion is true.

Question 5 · Practice question

Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : It is hotter over the top of a fire than at the same distance on the sides. Reason : Air surrounding the fire conducts more heat upwards.

  1. A.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
  2. B.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
  3. C.C. If assertion is true but reason is false.
  4. D.D. If the assertion and reason both are false.
Show answer

Answer: C. C. If assertion is true but reason is false.

The assertion is true because hot air rises upward due to convection, making regions directly above the fire hotter than the sides at equal distance. The reason is false because air is a poor conductor; convection, not conduction, is responsible for the upward transfer of heat. Remember: conduction involves molecular collisions without bulk motion, while convection involves movement of the fluid itself.

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