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- 1. Multiple Choice
The diagram shows a manometer containing a liquid. The manometer is used to find the difference between the pressure of a gas and atmospheric pressure. Which distance represents this pressure difference?
A
B
C
D
- 2. Multiple Choice
The diagram shows a mercury barometer. Which distance is used to calculate the pressure of the atmosphere?
25cm
75cm
80cm
100cm
- 3. Multiple Choice
The diagram shows a simple mercury barometer. The atmospheric pressure increases. Which distance increases?
V W
W Y
X Y
X Z
- 4. Multiple Choice
Water manometer is used to measure the pressure of a gas supply to a house. It gives a reading of h cm of water. Why is it better to use water rather than mercury in this manometer?
h would be too large if mercury were used
h would be too small if mercury were used
The tube would need to be narrower if mercury were used
The tube would need to be wider if mercury were used
- 5. Multiple Choice
The pressure of a gas is measured using a manometer as shown in the diagram. The mercury in the manometer is replaced with a liquid that is less dense. How does the value of h change?
It becomes zero
It decreases but not to zero
It stays the same
It increases
- 6. Multiple Choice
The diagram show two mercury barometer standing side by side. The right-hand diagram shows a tube bigger diameter, but the diagram is incomplete. There is a vacuum above the mercury in both tubes. Which labelled position on the right-hand tube could show the mercury level in that tube?
A
B
C
D
- 7. Multiple Choice
A manometer is used to measure the pressure of air in a container. Which change would give a smaller value of height h?
using a less dense liquid
using a more dense liquid
using a narrower tube
using a wider tube
- 8. Multiple Choice
The diagram shows a manometer with one side connected to a gas cylinder and the other side open to the atmosphere. Which conclusion can be made using only the information from liquid levels in the manometer?
density of gas < density of air
density of gas > density of air
pressure of gas < atmospheric pressure
pressure of gas > atmospheric pressure
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