Thermal Physics One Mark Online Test

Thermal Physics One Mark Online Test (10th Standard Science)

Pick how many questions you want and set a time limit, then start. You'll get your score at the end with the correct answer and an explanation for every question. Free, in Tamil and English — 20 questions available.

Set up your test

Number of questions

Time limit

Time remaining00:00

The value of universal gas constant is

A.3.81 Jmo\(l^{-1} K^{-1}\) B.8.03 Jmo\(l^{-1} K^{-1}\) C.1.38 Jmo\(l^{-1} K^{-1}\) D.8.31 Jmo\(l^{-1} K^{-1}\)

If a substance is heated or cooled, the change in mass of that substance is

A.positive B.negative C.zero D.none of the above

If a substance is heated or cooled, the linear expansion occurs along the axis of

A.X or -X B.Y or -Y C.both (a) and (b) D.(a) or (b)

Temperature is the average ___________ of the molecules of a substance

A.difference in K.E and P.E B.sum of P.E and K.E C.difference in T.E and P.E D.difference in K.E and T.E

In the given diagram, the possible direction of heat energy transformation is

A diagram showing three blocks A, B, and C with temperatures 303 K, 304 K, and 305 K respectively, indicating the directions of heat flow between them. — Thermal Physics, 10th Standard Science

A.A \leftarrow B, A \leftarrow C, B \leftarrow C B.A \rightarrow B, A \rightarrow C, B \rightarrow C C.A \rightarrow B, A \leftarrow C, B \rightarrow C D.A \leftarrow B, A \rightarrow C, B \leftarrow C

Each unit of the thermodynamic scale of temperature is defined as what fraction of the thermodynamic temperature of the triple point of water?

A.1/273.16 B.1/273 C.1/373.15 D.1/100

Which of the following properties of a system determines the direction of the flow of heat energy when placed in contact with another system?

A.Mass B.Density C.Volume D.Temperature

What is the correct mathematical relation between the Fahrenheit scale (F) and the Kelvin scale (K) of temperature?

A.[K] = (F + 460) \\(\times\) \\(\frac{5}{9}\) B.[K] = (F - 460) \\(\times\) \\(\frac{5}{9}\) C.[K] = (F + 32) \\(\times\) \\(\frac{9}{5}\) D.[K] = (F - 32) \\(\times\) \\(\frac{5}{9}\)

What is the value of absolute zero on the Celsius scale of temperature?

A.-273°C B.0°C C.-373°C D.100°C

Q10

When a metallic system is heated and undergoes thermal expansion, what happens to its mass?

A.It increases B.It decreases C.It remains completely unchanged D.It first increases then decreases

Q11

What is the SI unit of the coefficient of linear expansion of a solid substance?

A.K B.\(K^{-1}\) C.m D.\(m K^{-1}\)

Q12

If a liquid is heated in a container, which of the following statements correctly describes the relationship between its real expansion and its apparent expansion?

A.Real expansion is always less than apparent expansion B.Real expansion is always equal to apparent expansion C.Real expansion is always more than apparent expansion D.Real expansion can be more or less than apparent expansion depending on the container

Q13

In an experiment to measure the real and apparent expansion of a liquid, the initial level is L1, the level after initial heating of the container is L2, and the final level is L3. How is the real expansion calculated?

A.L3 - L1 B.L3 - L2 C.L2 - L1 D.L1 + L2 - L3

Q14

According to Boyle's law, when the temperature of a fixed mass of gas is kept constant, how does the volume (V) vary with the pressure (P)?

A.Volume is directly proportional to pressure B.Volume is inversely proportional to pressure C.Volume is proportional to the square of pressure D.Volume is independent of pressure

Q15

State which thermodynamic variable is kept constant in Charles's law, which states that volume is directly proportional to temperature.

A.Volume B.Temperature C.Mass only D.Pressure

Q16

The ideal gas equation, PV = RT, is also referred to as the equation of state. Why is it given this name?

A.It defines the physical state of matter of the gas B.It relates the state variables of the gas C.It describes the state of the surroundings D.It is only valid for gases in a solid state

Q17

One calorie is defined as the amount of heat energy required to raise the temperature of one gram of water through which of the following intervals?

A.1°C B.1 K C.1°F D.10°C

Q18

What is the value of the Boltzmann constant as given in the textbook evaluation section?

A.1.381 \\(\times 10^{-23} J K^{-1}\) B.8.31 J mo\(l^{-1} K^{-1}\) C.6.023 \\(\times 10^{23}\) mo\(l^{-1}\) D.1.381 \\(\times 10^{-23} J K\)

Q19

Under what condition are the atoms or molecules of a gas considered to behave as an ideal gas?

A.When they undergo chemical reactions B.When they do not interact with each other C.When they exhibit high interatomic forces of attraction D.When they undergo zero thermal expansion

Q20

What is the correct numerical value and unit of the universal gas constant (R) as described in the ideal gas equation?

A.8.31 J mo\(l^{-1} K^{-1}\) B.1.38 \\(\times 10^{-23} J K^{-1}\) C.8.31 J mol K D.3.81 J mo\(l^{-1} K^{-1}\)

More for this chapter

About this Thermal Physics test

This free online practice test covers Thermal Physics from the 10th Standard Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

More chapters in Science

View all