1. If a pressure of  6 Pa acts on 3 m2 of area, then the force acting on the surface is   2.00 N   18dynes   18 N   2.00dynes   Hint Half-n-half Clue   2. 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   3. What instrument is used for measuring atmospheric pressure?   Sphygmomanometer   Hygrometer   Hydrometer   Barometer   Half-n-half Clue   4. To measure the atmospheric pressure, the space (labeled A) above the mercury level in a barometer tube is   filled with water   filled with nitrogen   essentially vacuum   filled with air   Half-n-half Clue   5. 12 litres of a gas at a pressure of 3 bar are compressed to 6 litres without any change in the temperature. The final pressure of the gas is about   6.0  bar   1.50 bar   12  bar   3.00  bar   Half-n-half Clue   6. 5 bars = _______ Pascals   5e-05   0.0005   500000   50000   Half-n-half Clue   7. A _______ measures the pressure in terms of the difference in fluid levels between the vertical arms of a glass U-tube.   Hydrometer   Manometer   Barometer   Sphygmomanometer   Half-n-half Clue