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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

1.

1 Pascal = 1 _______ m-2
 Newton Erg Dyne Joule

Half-n-half Clue

2.

If a pressure of  6 Pa acts on 4 m2 of area, then the force acting on the surface is
 1.50 N 24 N 24dynes 1.50dynes

Half-n-half Clue

3.

To measure the atmospheric pressure, the space (labeled A) above the mercury level in a barometer tube is
 essentially vacuum filled with air filled with water filled with nitrogen

Half-n-half Clue

4.

7 bars = _______ millibars
 7000 0.007 0.7 70

Half-n-half Clue

5.

If the density of liquid A (carbon tetrachloride) is 1.6 g cm-3 and its height hA = 11.2 cm, then the density of oil B of height hB = 20 cm in the U-tube is about
 2.84 g cm-3 1.11 g cm-3 0.90 g cm-3 0.35 g cm-3

Half-n-half Clue

6.

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
 2.666 × 104dynes cm-2 1.061 × 104dynes cm-2 1.016 × 107dynes cm-2 1.040 × 106dynes cm-2

Half-n-half Clue

7.

With increase in altitude, the pressure of the atmosphere
 may increase or decrease remains constant decreases increases

Half-n-half Clue

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