Practice MCQs For Pressure

This quiz contains practice questions for GCE ‘O’ level topic: Pressure. 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.

Back To O Level Physics

Back To List of O Level Physics Quiz

Enter email to receive results:

1. The diagram above shows a cylindrical container with diameter 0.5 m containing a liquid of density 750 $kg \, m^{-3}$. Find the pressure exerted by the liquid on the base of the container.

$7.5 \times 10^{2}$ Pa

$1.5 \times 10^{4}$ Pa

$1.5 \times 10^{3}$ Pa

$7.5 \times 10^{3}$ Pa

2. The diagram shows a manometer containing mercury that is sealed at one end.

What happens to the distance h when the manometer is taken to the top of a mountain?

It decreases, because atmospheric pressure decreases with height.

It increases, because atmospheric pressure decreases with height.

It decreases, because atmospheric pressure increases with height.

It increases, because atmospheric pressure increases with height.

3. A small table weighing 40 N stands on four legs, each having an area of $0.001 \text{ m}^{2}$. What is the pressure of the table on the floor?

$1000 \text{N m}^{-2}$

$400 \text{N m}^{-2}$

$10 \, 000 \text{N m}^{-2}$

$40 \, 000 \text{N m}^{-2}$

4. A manometer is connected to a gas supply.

Pressure can be measured in cm of water.

What is the pressure of the gas?

8 cm of water more than atmospheric pressure

8 cm of water less than atmospheric pressure

12 cm of water more than atmospheric pressure

12 cm of water less than atmospheric pressure

5. A gas is trapped inside a cylinder by a movable piston. The length of the gas column is 50 cm and the pressure inside the cylinder is p.

The piston is pushed in a distance of 30 cm, so that the length of the gas column is now 20 cm. The temperature of the gas does not change.

What is the new pressure of the gas?

0.4 p

2.5 p

0.6 p

1.5 p

6. Bubbles of gas, escaping from the mud at the bottom of a deep lake, rise to the surface.

As the bubbles rise, they get larger.

Why is this?

Atmospheric pressure on the bubbles decreases.

Atmospheric pressure on the bubbles increases.

Water pressure on the bubbles increases.

Water pressure on the bubbles decreases.

7. Which graph shows the relationship between the pressure and volume of a fixed mass of gas at constant temperature?

B

C

D

A

8. A brick of weight 80 N stands upright on the ground as shown.

What is the pressure it exerts on the ground?

$\frac{80}{20 \times 10} \, \text{N cm}^{-2}$

$\frac{10 \times 5}{80} \, \text{N cm}^{-2}$

$\frac{20 \times 10}{80} \, \text{N cm}^{-2}$

$\frac{80}{10 \times 5} \, \text{N cm}^{-2}$

9. Which of the following will cause the height of the mercury column in a barometer, A, to be higher than  that of another barometer, B, located at sea level?

Bring A into a deep underground mine.

Bring A to the moon and place it out in the open.

Bring A up a mountain.

Introduce some air into barometer A, in the space above the mercury column.

10. Which of the following does not affect the pressure beneath the surface of a liquid?

depth of the liquid

strength of the gravitational field

area of the liquid surface

density of the liquid

 Loading...

 

Back To O Level Physics

Back To List of O Level Physics Quiz