NEET Physics: Thermal Properties of Matter — MCQ Test 3

Q6. A brass cube of side \( 15 \, \text{cm} \) at \( 35^\circ \text{C} \) is heated to \( 135^\circ \text{C} \). What is the increase in its surface area if one face is \( 225 \, \text{cm}^2 \)? (\( \alpha_l = 1.8 \times 10^{-5} \, \text{K}^{-1} \))

Q7. How much heat is required to convert \( 0.2 \, \text{kg} \) of ice at \( -15^\circ \text{C} \) to steam at \( 100^\circ \text{C} \)? (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 = \( 2.256 \times 10^6 \, \text{J kg}^{-1} \))

Q8. A steel cube of side \( 20 \, \text{cm} \) at \( 25^\circ \text{C} \) is heated to \( 125^\circ \text{C} \). What is the increase in volume? (\( \alpha_l = 1.2 \times 10^{-5} \, \text{K}^{-1} \))

Q9. A gas occupies \( 2.5 \, \text{L} \) at \( 1.2 \, \text{atm} \) and \( 37^\circ \text{C} \). If the pressure is doubled and temperature increased by \( 50^\circ \text{C} \), what is the new volume?

Q10. Which of the following is true about the Celsius and Fahrenheit scales at the ice point?

NEET PhysicsThermal Properties of Matter

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A gas at \( 1.9 \, \text{atm} \) and \( 67^\circ \text{C} \) occupies \( 6.5 \, \text{L} \). If the pressure is increased to \( 2.5 \, \text{atm} \) and temperature raised to \( 117^\circ \text{C} \), what is the new volume?

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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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Key concepts covered in this specific test include Occupies, Pressure, Increased, Temperature, Increase, and Required.

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. A gas at \( 1.9 \, \text{atm} \) and \( 67^\circ \text{C} \) occupies \( 6.5 \, \text{L} \). If the pressure is increased to \( 2.5 \, \text{atm} \) and temperature raised to \( 117^\circ \text{C} \), what is the new volume?

  • A. 5.6 L
  • B. 5.7 L
  • C. 5.5 L
  • D. 5.66 L

Q2. A steel disc of radius \( 25 \, \text{cm} \) at \( 30^\circ \text{C} \) is heated to \( 130^\circ \text{C} \). What is the increase in its area? (\( \alpha_l = 1.2 \times 10^{-5} \, \text{K}^{-1} \))

  • A. 4.7 cm²
  • B. 4.71 cm²
  • C. 4.8 cm²
  • D. 4.6 cm²

Q3. What is the heat required to raise the temperature of \( 0.5 \, \text{kg} \) of copper from \( 30^\circ \text{C} \) to \( 80^\circ \text{C} \)? (Specific heat of copper = \( 386 \, \text{J kg}^{-1} \text{K}^{-1} \))

  • A. 9.5 kJ
  • B. 9.65 kJ
  • C. 10 kJ
  • D. 9 kJ

Q4. A \( 0.25 \, \text{kg} \) iron block at \( 150^\circ \text{C} \) is dropped into \( 1.5 \, \text{kg} \) of water at \( 30^\circ \text{C} \). What is the final temperature? (Specific heat of iron = \( 450 \, \text{J kg}^{-1} \text{K}^{-1} \), water = \( 4186 \, \text{J kg}^{-1} \text{K}^{-1} \))

  • A. 32.11°C
  • B. 33°C
  • C. 34°C
  • D. 31°C

Q5. How much heat is needed to melt \( 0.4 \, \text{kg} \) of lead at its melting point of \( 328^\circ \text{C} \)? (Latent heat of fusion of lead = \( 0.25 \times 10^5 \, \text{J kg}^{-1} \))

  • A. 10 kJ
  • B. 12 kJ
  • C. 8 kJ
  • D. 15 kJ

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