1. To measure the atmospheric pressure, the space (labeled A) above the mercury level in a barometer tube is   essentially vacuum   filled with nitrogen   filled with air   filled with water   Hint Half-n-half Clue   2. 21 litres of a gas at a pressure of 3 bar are compressed to 7 litres without any change in the temperature. The final pressure of the gas is about   1.00 bar   21  bar   9.0  bar   2.33  bar   Half-n-half Clue   3. _______ is a type of barometer that consists essentially of a thin metal box exhausted of air.   Anemometer   Aneroid   Hydrometer   Manometer   Half-n-half Clue   4. A _______ measures the pressure in terms of the difference in fluid levels between the vertical arms of a glass U-tube.   Sphygmomanometer   Hydrometer   Barometer   Manometer   Half-n-half Clue   5. 5 Pa = _______ dynes cm-2   50   500000   0.5   5e-05   Half-n-half Clue   6. The SI unit of pressure is   Joule   Pascal   Watt   Newton   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.   100000   1000   10000   100   Half-n-half Clue