NEET Physics: Thermal Properties of Matter — MCQ Test 8

Q6. A gas at \( 1.5 \, \text{atm} \) and \( 77^\circ \text{C} \) occupies \( 9 \, \text{L} \). If the pressure is reduced to \( 1 \, \text{atm} \) and temperature lowered to \( 27^\circ \text{C} \), what is the new volume?

Q7. A gas at \( 3 \, \text{atm} \) and \( 27^\circ \text{C} \) occupies \( 4 \, \text{L} \). If the pressure is reduced to \( 1.5 \, \text{atm} \) and temperature raised to \( 177^\circ \text{C} \), what is the new volume?

Q8. Which property of a substance determines the amount of heat required to change its temperature by \( 1^\circ \text{C} \) per unit mass?

Q9. Which gas law relates pressure and volume when temperature is held constant?

Q10. Which law explains why the volume of a gas increases when its temperature rises at constant pressure?

NEET PhysicsThermal Properties of Matter

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A \( 0.3 \, \text{kg} \) lead block at \( 400^\circ \text{C} \) is placed in \( 0.7 \, \text{kg} \) water at \( 15^\circ \text{C} \) in a \( 0.1 \, \text{kg} \) aluminium calorimeter at \( 15^\circ \text{C} \). Find the final temperature. (Specific heat of lead = \( 127.7 \, \text{J kg}^{-1} \text{K}^{-1} \), water = \( 4186 \, \text{J kg}^{-1} \text{K}^{-1} \), aluminium = \( 900 \, \text{J kg}^{-1} \text{K}^{-1} \))

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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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Key concepts covered in this specific test include Aluminium, Calorimeter, Temperature, Specific, Supplied, and Sectional.

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Preview of Questions in this Test

Q1. A \( 0.3 \, \text{kg} \) lead block at \( 400^\circ \text{C} \) is placed in \( 0.7 \, \text{kg} \) water at \( 15^\circ \text{C} \) in a \( 0.1 \, \text{kg} \) aluminium calorimeter at \( 15^\circ \text{C} \). Find the final temperature. (Specific heat of lead = \( 127.7 \, \text{J kg}^{-1} \text{K}^{-1} \), water = \( 4186 \, \text{J kg}^{-1} \text{K}^{-1} \), aluminium = \( 900 \, \text{J kg}^{-1} \text{K}^{-1} \))

  • A. 19°C
  • B. 19.5°C
  • C. 19.8°C
  • D. 20°C

Q2. How much ice at \( 0^\circ \text{C} \) will melt if \( 16744 \, \text{J} \) of heat is supplied? (Latent heat of fusion of ice = \( 3.35 \times 10^5 \, \text{J kg}^{-1} \))

  • A. 40 g
  • B. 50 g
  • C. 60 g
  • D. 45 g

Q3. A copper cube has a side length of \( 10 \, \text{cm} \) at \( 30^\circ \text{C} \). What is its volume at \( 130^\circ \text{C} \)? (\( \alpha_l = 1.7 \times 10^{-5} \, \text{K}^{-1} \))

  • A. 1005.1 cm³
  • B. 1005 cm³
  • C. 1006 cm³
  • D. 1004 cm³

Q4. A brass rod of length \( 2.5 \, \text{m} \) at \( 20^\circ \text{C} \) is heated to \( 220^\circ \text{C} \). If its cross-sectional area increases by \( 0.018 \, \text{cm}^2 \), what was its original area? (\( \alpha_l = 1.8 \times 10^{-5} \, \text{K}^{-1} \))

  • A. 2.4 cm²
  • B. 2.5 cm²
  • C. 2.6 cm²
  • D. 2.7 cm²

Q5. A gas expands from \( 4 \, \text{L} \) to \( 6 \, \text{L} \) at constant pressure of \( 2 \, \text{atm} \) and temperature \( 300 \, \text{K} \). What is the new temperature if the volume is reduced back to \( 4 \, \text{L} \) at constant pressure?

  • A. 290 K
  • B. 300 K
  • C. 310 K
  • D. 450 K

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