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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.

If a pressure of  7 Pa acts on 3 m2 of area, then the force acting on the surface is

  21dynes

  2.33 N

  2.33dynes

  21 N

  Half-n-half Clue
 

2.

3 bars = _______ millibars

  0.3

  0.003

  30

  3000

  Half-n-half Clue
 

3.

pressure - barometer
Air is trapped in the space (labeled A) above the mercury level in the tube of a barometer, which measures 745 mm Hg. If the atmospheric pressure is 760 mm Hg, then the pressure of the trapped air is

  760 mm Hg

  15 mm Hg

  745 mm Hg

  between 745 and 760 mm Hg

  Half-n-half Clue
 

4.

Barometers modified to measure the height above sea level are called

  altimeters

  sphygmomanometers

  hydrometers

  manometers

  Half-n-half Clue
 

5.

Soap bubbles are spherical in shape because

  spherical shape has the highest ratio of surface area to volume

  air trapped inside the bubble has low pressure

  air exerts equal pressure in all directions

  soap film has a low surface tension

  Half-n-half Clue
 

6.

_______ states that the product of the pressure and volume of a fixed mass of gas is constant provided the temperature is unchanged.

  Charles' Law

  Boyle's Law

  Avogadro's Law

  Dalton's Law

  Half-n-half Clue
 

7.

5 bars = _______ Pascals

  5e-05

  0.0005

  50000

  500000

  Half-n-half Clue
 

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