NEET Physics: Thermal Properties of Matter — MCQ Test 2

Q6. A gas at \( 2.4 \, \text{atm} \) and \( 87^\circ \text{C} \) occupies \( 7 \, \text{L} \). If the temperature is lowered to \( 37^\circ \text{C} \) and pressure adjusted to \( 3 \, \text{atm} \), what is the percentage change in volume?

Q7. Which of the following correctly relates the coefficients of linear and area expansion?

Q8. How much heat is required to raise \( 0.8 \, \text{kg} \) of aluminium from \( 25^\circ \text{C} \) to \( 75^\circ \text{C} \) if its specific heat capacity is \( 900 \, \text{J kg}^{-1} \text{K}^{-1} \)?

Q9. How much heat is required to convert \( 0.25 \, \text{kg} \) of ice at \( -30^\circ \text{C} \) to steam at \( 120^\circ \text{C} \)? (Specific heat of ice = \( 2100 \, \text{J kg}^{-1} \text{K}^{-1} \), latent heat of fusion = \( 3.35 \times 10^5 \, \text{J kg}^{-1} \), specific heat of water = \( 4186 \, \text{J kg}^{-1} \text{K}^{-1} \), latent heat of vaporization = \( 2.256 \times 10^6 \, \text{J kg}^{-1} \))

Q10. How much heat is required to raise \( 0.4 \, \text{kg} \) of water from \( 15^\circ \text{C} \) to \( 85^\circ \text{C} \) and then convert \( 0.25 \, \text{kg} \) to steam at \( 100^\circ \text{C} \) in a \( 0.2 \, \text{kg} \) silver calorimeter initially at \( 15^\circ \text{C} \)? (Specific heat of water = \( 4186 \, \text{J kg}^{-1} \text{K}^{-1} \), silver = \( 236 \, \text{J kg}^{-1} \text{K}^{-1} \), latent heat of vaporization = \( 2.256 \times 10^6 \, \text{J kg}^{-1} \))

NEET Physics — Thermal Properties of Matter

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How much heat is needed to convert 0.1 kg0.1 \, \text{kg} of mercury at −39∘C-39^\circ \text{C} to liquid at 357∘C357^\circ \text{C}? (Specific heat of solid mercury = 140 J kg−1K−1140 \, \text{J kg}^{-1} \text{K}^{-1}, latent heat of fusion = 0.12×105 J kg−10.12 \times 10^5 \, \text{J kg}^{-1}, specific heat of liquid mercury = 140 J kg−1K−1140 \, \text{J kg}^{-1} \text{K}^{-1})

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Thermal Properties of Matter. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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10
Medium
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Key concepts covered in this specific test include Specific, Decreases, Temperature, Aluminium, Calorimeter, and Constant.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1.

How much heat is needed to convert 0.1 kg0.1 \, \text{kg} of mercury at −39∘C-39^\circ \text{C} to liquid at 357∘C357^\circ \text{C}? (Specific heat of solid mercury = 140 J kg−1K−1140 \, \text{J kg}^{-1} \text{K}^{-1}, latent heat of fusion = 0.12×105 J kg−10.12 \times 10^5 \, \text{J kg}^{-1}, specific heat of liquid mercury = 140 J kg−1K−1140 \, \text{J kg}^{-1} \text{K}^{-1})

  • A.

    6.5 kJ

  • B.

    6.7 kJ

  • C.

    6.744 kJ

  • D.

    7 kJ

Q2.

A copper rod of length 80 cm80 \, \text{cm} at 40∘C40^\circ \text{C} is cooled until its length decreases by 0.0136 cm0.0136 \, \text{cm}. What is the final temperature? (αl=1.7×10−5 K−1\alpha_l = 1.7 \times 10^{-5} \, \text{K}^{-1})

  • A.

    30°C

  • B.

    32°C

  • C.

    28°C

  • D.

    35°C

Q3.

A 0.15 kg0.15 \, \text{kg} mercury block at 400∘C400^\circ \text{C} is placed in 0.5 kg0.5 \, \text{kg} water at 20∘C20^\circ \text{C} in a 0.05 kg0.05 \, \text{kg} aluminium calorimeter at 20∘C20^\circ \text{C}. Find the final temperature. (Specific heat of mercury = 140 J kg−1K−1140 \, \text{J kg}^{-1} \text{K}^{-1}, water = 4186 J kg−1K−14186 \, \text{J kg}^{-1} \text{K}^{-1}, aluminium = 900 J kg−1K−1900 \, \text{J kg}^{-1} \text{K}^{-1})

  • A.

    23°C

  • B.

    23.5°C

  • C.

    24°C

  • D.

    23.7°C

Q4.

During the melting of ice at 0∘C0^\circ \text{C}, why does the temperature remain constant despite heat being supplied?

  • A.

    Heat is used to change the state, not raise temperature

  • B.

    Ice has a high specific heat

  • C.

    Heat is lost to the surroundings

  • D.

    Temperature decreases during melting

Q5.

Which temperature scale uses absolute zero as its starting point?

  • A.

    Kelvin

  • B.

    Celsius

  • C.

    Fahrenheit

  • D.

    Centigrade

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