Practice MCQs For Thermal Physics

This quiz contains practice questions for GCE ‘O’ level topic: Thermal Physics. There are explanations for some of the questions after you submit the quiz. If you could not figure out why a particular option is the answer, feel free to drop a comment below or ask a question in ‘O’ & ‘A’ Level Discussion section of the forum. If you wish to contribute questions to this quiz, please contact us.

The quiz comprises of 10 questions, which are randomly selected from a large pool of questions. After completion, you can refresh the page and try the quiz again for a new set of 10 questions.

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1. The specific latent heat of vaporization of water is about 6.7 times than that of the specific latent heat of fusion of water. What is the ratio of the latent heat of vaporization of 6.7 kg of water compared to the latent heat of fusion of 1 kg of water?

6.7 : 1

1 : 6.7

45 : 1

1 : 45

2. A student is given a thermometer that reads $1^{\circ}C$ in pure melting ice and $101^{\circ}C$ in pure boiling water. She uses it to measure the temperature of some water before and after it is heated.

The increase in temperature of the water calculated from her results is

$2^{\circ}C$ too low

$1^{\circ}C$ too high

$1^{\circ}C$ too low

Correct

3. When ice melts to become water, which force must be overcome?

The attraction between electrons and the nucleus

The force between molecules

The force of gravity

The attraction between the atoms in a molecule

4. The diagram shows four similar cans. Each can contains the same volume of water initially at $80^{\circ}C$. After five minutes, which can will contain the coolest water?

A

B

D

C

5. What is the definition of heat capacity?

the quantity of heat required to change 1 kg of a substance from solid to liquid without a change in temperature

the quantity of heat required to convert an object from solid to liquid without a change in temperature

the quantity of heat required to raise the temperature of an object through $1^{\circ} \text{C}$

the quantity of heat required to raise the temperature of 1 kg of a substance through $1^{\circ} \text{C}$

6. A rod of metal is heated at one end.

Which statement best describes the conduction of heat through the metal?

Atoms move from the hot end and hit electrons at the cold end.

Free electrons vibrate and pass energy to free electrons further along the rod.

Atoms vibrate and hit atoms at the cold end.

Free electrons move from the hot end and hit atoms further along the rod.

7. Heat energy is supplied at the same rate to 100 g of paraffin and to 100 g of water in similar containers.

Why does the temperature of the paraffin rise more quickly?

The paraffin has a smaller specific heat capacity than water.

The paraffin has a larger specific heat capacity than water.

The paraffin is less dense than water.

The paraffin is more dense than water.

8. Fillings in teeth should be made from a material which ___________ .

expands more than the tooth when heated.

expands by the same amount as the tooth when heated.

does not expand when heated.

expands less than the tooth when heated.

9. Which of the following statements is true in relation to the transfer of energy?

During heating and cooling, energy always flows from a body with more energy to a body with less energy.

During heating and cooling, energy always flows from a body of low temperature to a body of high temperature.

During heating and cooling, temperature always flows from a body with high temperature to a body with low temperature.

During heating and cooling, energy always flows from a body of high temperature to a body of low temperature.

10. Fibre is used for home insulation in a cold country, as shown in the diagram.

Heat cannot easily escape through the ceiling because the fibre

is warm.

heats the roof space.

traps air.

is tightly packed.

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