Thermal properties of matter test

Thermal Properties of Matter Practice Test

20 MCQs + 5 Numerical Problems | Class 11 Physics

Test Instructions

• This test contains 20 Multiple Choice Questions (1 mark each) and 5 Numerical Problems (2 marks each).

• Total marks: 20 + 10 = 30 marks.

• For MCQs, select the correct option.

• For numerical problems, enter your answer in the provided box (with proper units if required).

• Click "Show Hint" for help with numerical problems.

• Click "Submit Test" when you're done to see your score and review answers.

Section A: Multiple Choice Questions (20 × 1 = 20 Marks)

1. The SI unit of heat is:

(a) Calorie

(b) Joule

(c) Kelvin

(d) Watt

2. The temperature at which the volume of a gas becomes zero is:

(a) 0°C

(b) -100°C

(c) -273.15°C

(d) 100°C

3. The coefficient of linear expansion of a metal is α. Its coefficient of volume expansion is:

(a) α

(b) 2α

(c) 3α

(d) α/3

4. Water has maximum density at:

(a) 0°C

(b) 4°C

(c) 10°C

(d) 100°C

5. The specific heat capacity of water is:

(a) 1 cal/g°C

(b) 4.18 J/g°C

(c) Both (a) and (b)

(d) 0.5 cal/g°C

6. The mode of heat transfer that doesn't require any medium is:

(a) Conduction

(b) Convection

(c) Radiation

(d) Both (a) and (b)

7. The latent heat of fusion of ice is:

(a) 80 cal/g

(b) 540 cal/g

(c) 336 J/g

(d) Both (a) and (c)

8. Good conductors of heat are:

(a) Metals

(b) Non-metals

(c) Both metals and non-metals

(d) Only gases

9. The Stefan-Boltzmann constant has value:

(a) 5.67 × 10⁻⁸ W m⁻² K⁻⁴

(b) 6.67 × 10⁻¹¹ N m² kg⁻²

(c) 1.38 × 10⁻²³ J K⁻¹

(d) 8.31 J mol⁻¹ K⁻¹

10. The triple point of water is at:

(a) 0°C and 1 atm

(b) 0.01°C and 4.58 mm Hg

(c) 100°C and 1 atm

(d) 4°C and 1 atm

11. The principle of calorimetry is based on:

(a) Conservation of mass

(b) Conservation of energy

(c) Conservation of momentum

(d) Newton's law of cooling

12. The coefficient of thermal conductivity for a perfect conductor is:

(a) Zero

(b) Infinity

(c) 1

(d) 100

13. The rate of heat flow through a conductor is given by:

(a) Q = mL

(b) Q = mcΔT

(c) Q/t = -kA(dT/dx)

(d) P = εσAT⁴

14. A black body is one which:

(a) Absorbs all radiation falling on it

(b) Reflects all radiation falling on it

(c) Transmits all radiation falling on it

(d) Absorbs, reflects and transmits equally

15. The temperature of the sun is determined by:

(a) Stefan-Boltzmann law

(b) Wien's displacement law