1. 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   1.040 × 106dynes cm-2   1.016 × 107dynes cm-2   1.061 × 104dynes cm-2   Hint Half-n-half Clue   2. If the density of liquid A (carbon tetrachloride) is 1.6 g cm-3 and its height hA = 15.0 cm, then the density of oil B of height hB = 30 cm in the U-tube is about   0.80 g cm-3   1.25 g cm-3   0.31 g cm-3   3.20 g cm-3   Half-n-half Clue   3. 1 Pascal = 1 _______ m-2   Erg   Dyne   Joule   Newton   Half-n-half Clue   4. The SI unit of pressure is   Watt   Newton   Joule   Pascal   Half-n-half Clue   5. What instrument is used for measuring atmospheric pressure?   Hydrometer   Barometer   Hygrometer   Sphygmomanometer   Half-n-half Clue   6. 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.   10336   101396   10.336   0.76   Half-n-half Clue   7. Which is the 'odd one out'?   Pa   bar   N   mm Hg   Half-n-half Clue   FREE PREVIEW: Last 11 Questions not a part of the free preview. Get Premium Membership to view all questions.