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School Physics Quiz : Pressure


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

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Multiple choice

Your Performance  

1.

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

  Manometer

  Anemometer

  Hydrometer

  Aneroid

  Half-n-half Clue
 

2.

5 bars = _______ millibars

  5000

  0.5

  0.005

  50

  Half-n-half Clue
 

3.

1 Pascal = 1 _______ m-2

  Newton

  Joule

  Dyne

  Erg

  Half-n-half Clue
 

4.

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

  2.666 × 104dynes cm-2

  1.061 × 104dynes cm-2

  Half-n-half Clue
 

5.

Soap bubbles are spherical in shape because

  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

  soap film has a low surface tension

  Half-n-half Clue
 

6.

pressure measurement
A _______ measures the pressure in terms of the difference in fluid levels between the vertical arms of a glass U-tube.

  Sphygmomanometer

  Manometer

  Hydrometer

  Barometer

  Half-n-half Clue
 

7.

The average atmospheric pressure at sea level is 760 mm Hg. If the relative density of mercury is 13.6, then the air pressure can support _______ m of vertical length of a water column at sea level.

  10.336

  101396

  10336

  0.76

  Half-n-half Clue
 

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