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ICSE Class 10 Heat: calorimetry, specific heat capacity and latent heat — practice questions — page 3

Explore 66 free Heat: calorimetry, specific heat capacity and latent heat questions in ICSE Class 10 Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Heat: calorimetry, specific heat capacity and latent heat questions and exercises with answers

Showing questions 61–66 of 66.

Equal water masses80°C,20°C mix in a cup20°C of the same heat capacity as one mass. No loss. Final T?Read the answer and worked solution →Same power, no loss: ice0°C melts in8t; equal water mass warms10K in t. Lf/cwater?Read the answer and worked solution →Match each thermal capacity term with its definition and formula:Read the answer and worked solution →Match each substance with its notable calorimetric property:Read the answer and worked solution →Match each thermal mixing concept with its rule:Read the answer and worked solution →Match each everyday calorimetric effect with its physics explanation:Read the answer and worked solution →

Worked practice questions

Equal water masses80°C,20°C mix in a cup20°C of the same heat capacity as one mass. No loss. Final T?

  1. 60°C
  2. 50°C
  3. 30°C
  4. 40°C
Show answer and solution

Correct answer: D. 40°C

The two water masses and cup have equal heat capacities, so the final temperature is (80+20+20)/3=40°C.

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Same power, no loss: ice0°C melts in8t; equal water mass warms10K in t. Lf/cwater?

  1. 10K
  2. 8K
  3. 800K
  4. 80K
Show answer and solution

Correct answer: D. 80K

Equal heater power gives mLf=8mc×10K, hence Lf/c=80K.

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Match each thermal capacity term with its definition and formula:

  1. 1-A, 2-B, 3-C
  2. 1-B, 2-A, 3-C
  3. 1-C, 2-B, 3-A
  4. 1-A, 2-C, 3-B
Show answer and solution

Correct answer: A. 1-A, 2-B, 3-C

Specific heat c = Q/(mΔT). Heat capacity C' = mc. Latent heat Q = mL.

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