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CBSE Class 11 (Science) Thermal Properties of Matter & Thermodynamics — practice questions — page 8

Explore 267 free Thermal Properties of Matter & Thermodynamics questions in CBSE Class 11 (Science) Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Thermal Properties of Matter & Thermodynamics questions and exercises with answers

Showing questions 211–240 of 267.

How is the coefficient of volume expansion related to the linear coefficient?Read the answer and worked solution →A thin metal plate is heated by ΔT. Its fractional area increase equals what?Read the answer and worked solution →Which of these metals has the greatest coefficient of linear expansion?Read the answer and worked solution →Which of these materials expands least on heating?Read the answer and worked solution →What does water do on heating from 0 °C to 4 °C?Read the answer and worked solution →At what temperature does liquid water reach its maximum density?Read the answer and worked solution →What is the stress set up in a rod that is prevented from expanding on heating?Read the answer and worked solution →Why does a tight metal lid on a bottle loosen in hot water?Read the answer and worked solution →Heat needed to warm a substance depends on its mass, the temperature change and what else?Read the answer and worked solution →Heat capacity S of a substance is defined as which ratio?Read the answer and worked solution →Which quantity is heat per unit mass per unit rise in temperature?Read the answer and worked solution →Which symbol denotes molar specific heat capacity at constant pressure?Read the answer and worked solution →Why does land warm faster than the sea during the day?Read the answer and worked solution →In the daytime, a sea breeze blows in which direction near a coast?Read the answer and worked solution →At night near a coast, what happens to the daytime convection cycle?Read the answer and worked solution →What does the word calorimetry mean?Read the answer and worked solution →With no heat lost outside, heat lost by the hotter part equals what?Read the answer and worked solution →200 g of water at 80 °C is mixed with 300 g of water at 20 °C. What is the final temperature?Read the answer and worked solution →How much heat raises the temperature of 2 kg of water by 10 K? (swater = 4186 J kg–1 K–1)Read the answer and worked solution →What is the change of state from solid to liquid called?Read the answer and worked solution →What is the refreezing of water after the pressure on it is removed called?Read the answer and worked solution →Why is skating possible on snow?Read the answer and worked solution →What condition defines the triple point of a substance?Read the answer and worked solution →What is latent heat?Read the answer and worked solution →Latent heat of fusion refers to which change of state?Read the answer and worked solution →How much heat melts 2 kg of ice at 0 °C if Lf is 3.33 × 10^5 J/kg?Read the answer and worked solution →Extra heat is added to water already boiling at 1 atm. What does it cause?Read the answer and worked solution →Which of these is NOT one of the three modes of heat transfer?Read the answer and worked solution →How does heat pass through a solid in conduction?Read the answer and worked solution →Which state of matter is generally a poor thermal conductor?Read the answer and worked solution →

Worked practice questions

How is the coefficient of volume expansion related to the linear coefficient?

  1. αV = 3αl
  2. αV = αl/3
  3. αV = αl²
  4. αV = 2αl
Show answer and solution

Correct answer: A. αV = 3αl

Volume scales as length cubed, so the fractional volume change is three times the fractional length change.

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A thin metal plate is heated by ΔT. Its fractional area increase equals what?

  1. αl ΔT
  2. 2αl ΔT
  3. αl ΔT/2
  4. 3αl ΔT
Show answer and solution

Correct answer: B. 2αl ΔT

Area depends on two lengths, so the fractional change in area is 2αl ΔT.

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Which of these metals has the greatest coefficient of linear expansion?

  1. Iron
  2. Aluminium
  3. Copper
  4. Brass
Show answer and solution

Correct answer: B. Aluminium

Aluminium has αl of about 2.5 × 10^-5 per kelvin, above iron, brass and copper.

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