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School Physics Quiz : Pressure


Answer the following questions based on the change of state and latent pressure.

Formats Info Page Quiz Review
Multiple choice

Your Performance  

1.

pressure - manometer
One arm of a glass U-tube is open to the atmosphere, whereas the other vertical arm is connected to a gas supply. The difference in levels of mercury (density = 13.6 g cm-3) between the vertical arms of the U-tube manometer is h = 2 cm. If the atmospheric pressure is 760 mm Hg and the gravitational acceleration is 9.8 m s-2, then the pressure of the gas is about

  1.040 × 106dynes cm-2

  1.016 × 107dynes cm-2

  1.061 × 104dynes cm-2

  2.666 × 104dynes cm-2

  Half-n-half Clue
 

2.

pressure - barometer
To measure the atmospheric pressure, the space (labeled A) above the mercury level in a barometer tube is

  essentially vacuum

  filled with water

  filled with nitrogen

  filled with air

  Half-n-half Clue
 

3.

24 litres of a gas at a pressure of 4 bar are compressed to 6 litres without any change in the temperature. The final pressure of the gas is about

  1.00 bar

  16.0  bar

  24  bar

  1.50  bar

  Half-n-half Clue
 

4.

Soap bubbles are spherical in shape because

  soap film has a low surface tension

  air trapped inside the bubble has low pressure

  spherical shape has the highest ratio of surface area to volume

  air exerts equal pressure in all directions

  Half-n-half Clue
 

5.

Pressure is defined as

  mass / volume

  mass × acceleration

  force / area

  force × distance

  Half-n-half Clue
 

6.

_______ is a type of barometer that consists essentially of a thin metal box exhausted of air.

  Anemometer

  Aneroid

  Hydrometer

  Manometer

  Half-n-half Clue
 

7.

If the average atmospheric pressure at sea level can support 10.34 m of vertical length of a water column, then its magnitude is about _______ Pa.
Assume density of water = 1 g cm−3 and gravitational acceleration = 9.8 m s−2.

  100

  1000

  100000

  10000

  Half-n-half Clue
 


 
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