States of Matter
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Avg score: 100% • Most missed: “Which is not true in case of an ideal gas?”
States of Matter
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25 Questions

1. If a gas expands at constant temperature - itindicates that: [2008]
2. Aliquid can exist only: [1994]
3. A bubble of air is underwater attemperature °15C and the pressure 1.5 barIfthe bubble rises to the surface where thetemperature is °25C and the pressure is 1.0 bar - what will happen to the volume of the bubble?[2011]
4. The pressure exerted by 6.0g of methane gasin a 0.03 m3 vessel at °129C is (Atomic masses:C= 12.01 - H= 1.01 and R= 8.314 JK-“1 mol -“ )1[2010]
5. diffuse through a porous partition in 20 and 10seconds respectivelyThe molecular mass of Ais49 uMolecular mass of Bwill be: [2011]
6. Under what conditions will a pure sample ofan ideal gas not only exhibit a pressure of 1 atmbut also a concentration of 1 mole litre-“1? (R=0.082 litre atm mol -“1 deg-“ )1 [1993]
7. An ideal gas can-™t be liquefied because[1992]
8. 500 ml of nitrogen at °27C is cooled to -“°5Cat the same pressureThe new volume becomes[1995]
9. A gaseous mixture contains H 2 and O2 in themolar ratio 8:1 .The ratio of H 2 :O2 by weight inthis mixture would be [1999]
10. Root mean square velocity of a gas molecule isproportional to [1990]
11. Which is not true in case of an ideal gas?[1992]
12. The surface tension of which of the following liquid is maximum? [2005]
13. At constant temperature - for a given mass ofan ideal gas [1991]
14. At which one of the following temperature pressure conditions the deviation of a gas fromideal behaviour is expected to be minimum?[1996]
15. Dipole-induced dipole interactions arepresent in which of the following pairs: [2013]
16. At STP - 0.50 mol H 2 gas and 1.0 mol He gas[1993]
17. In a pair of immiscible liquids - a commonsolute dissolves in both and the equilibrium isreachedThen the concentration of the solute inupper layer is [1994]
18. Acertain gas takes three times as long toeffuse out as heliumIts molecular mass will be:[2012]
19. Three moles of an ideal gas expandedspontaneously into vacuumThe work done willbe: [2010]
20. Van der Waal\'s real gas - act as an ideal gas - at which conditions? [2002]
21. 50 mL of each gas Aand of gas Btakes 150and 200 seconds respectively for effusingthrough a pin hole under the similar conditionIfmolecular mass of gas Bis 36 - the molecularmass of gas Awill be: [2012]
22. The correct value of the gas constant -˜R-™ isclose to: [1992]
23. A closed flask contains water in all its threestates solid - liquid and vapour at °0CIn thissituation - the average kinetic energy of watermolecules will be [1992]
24. Maximum deviation from ideal gas isexpected from: [2013]
25. Select one correct statementIn the gasequation - PV= nRT [1992]

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