Warm air rises and cool air sinks in a heated room because of:
- Reflection
- Radiation
- Convection
- Conduction
Show answer and explanation
Answer: C. Convection
Convection currents: heated air expands, becomes less dense and rises.
Matric Physics: Thermal Properties of Matter, questions with answers
Practise 21 real Federal Board questions on Thermal Properties of Matter from 2023 to 2026. See the answer and explanation as soon as you answer.
21real questions
6multiple choice
5exam sessions
About Thermal Properties of Matter in Matric Physics
Thermal Properties of Matter is one of the 16 main chapters in our Federal Board Matric Physics question bank (9th and 10th class), and about 5% of its real questions come from it. Tayyari Karo has 21 real questions on this chapter from 2023 to 2026; 6 are multiple choice and marked instantly, and the rest are short and long questions with a model answer. By difficulty: 16 easy, 5 medium.
Work through the questions below, then open the explanation for each one. Redo the ones you missed a few days later.
Try 8 real questions
These are real past-paper questions. Think of your answer first, then open the explanation.
Linear expansion in solids refers to the change in:
- Mass only
- Area only
- Volume only
- Length only
Show answer and explanation
Answer: D. Length only
Linear expansion is the increase in length: ΔL = αL₀ΔT.
Ability of a thermometer to show temperature variations uniformly and equally is called:
- Range
- Linearity
- Sensitivity
- Reliability
Show answer and explanation
Answer: B. Linearity
Linearity means equal changes in temperature produce equal changes in the thermometer reading.
The SI unit for measuring temperature is:
- Centigrade
- Fahrenheit
- Kelvin
- Candela
Show answer and explanation
Answer: C. Kelvin
Kelvin (K) is the SI base unit of temperature. Candela is the unit of luminous intensity.
Temperature of a substance is equal to:
- K.E. of each molecule
- Average K.E. of molecules
- P.E. of each molecule
- Average P.E. of molecules
Show answer and explanation
Answer: B. Average K.E. of molecules
Temperature is a measure of the average kinetic energy of the molecules of a substance.
310 K is equal to:
- 37 °C
- 310 °C
- 583 °C
- −37 °C
Show answer and explanation
Answer: A. 37 °C
T(°C) = T(K) − 273 = 310 − 273 = 37 °C (normal human body temperature).
Calculate the heat required to raise the temperature of a 2 kg substance from 40 °C to 45 °C, given specific heat = 420 J kg⁻¹ K⁻¹.
Show model answer
Q = mcΔT = 2 × 420 × (45 − 40) = 2 × 420 × 5 = 4200 J
Describe the construction and working of liquid‑in‑glass and thermocouple thermometer.
Show model answer
Liquid‑in‑glass thermometer
Construction: a thick‑walled glass capillary tube of very fine, uniform bore with a thin‑walled bulb at one end containing mercury (or coloured alcohol). The space above the liquid is evacuated and the tube is sealed. A scale (°C) is marked between the ice point 0 °C and steam point 100 °C.
Working: when the bulb is placed in contact with a body, the liquid expands (or contracts) uniformly with temperature and its thread moves along the capillary; the reading on the scale gives the temperature. Mercury is used because it expands uniformly, is opaque, a good conductor and does not wet glass.
Thermocouple thermometer …
The full model answer is in the app.
Sessions with Thermal Properties of Matter questions
| Session | Questions |
|---|---|
| 2026 Annual | 7 |
| 2025 1st Annual | 3 |
| 2025 2nd Annual | 2 |
| 2024 Annual | 5 |
| 2023 Annual | 4 |
Common questions
What does the Thermal Properties of Matter chapter cover on this page?
21 real Federal Board (FBISE) Physics questions on Thermal Properties of Matter from 2023 to 2026, for 9th and 10th class. Each one shows the session it came from.
Are the answers official?
No. We could not find an official FBISE marking scheme for these papers, so the answers and explanations are written by Tayyari Karo for practice. Check anything important with your teacher or textbook.
Is it free?
You can start free with no signup. A small set of papers per subject is free, and Premium unlocks the full question bank.
Other Physics chapters
- Current Electricity 31
- Dynamics 30
- Physical Quantities and Measurement 29
- Kinematics 29
- Properties of Matter 24
- Electromagnetism 24
- Geometrical Optics 22
- Atomic and Nuclear Physics 21
- Sound 21
- Electrostatics 21
- Basic Electronics 20
- Simple Harmonic Motion and Waves 19
- Turning Effect of Forces 18
- Work and Energy 17
- Magnetism 17