States of Matter
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States of Matter
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25 Questions

1. 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]
2. Maximum deviation from ideal gas isexpected from: [2013]
3. At STP - 0.50 mol H 2 gas and 1.0 mol He gas[1993]
4. At which one of the following temperature pressure conditions the deviation of a gas fromideal behaviour is expected to be minimum?[1996]
5. Agaseous mixture was prepared by takingequal mole of CO and N 2 .If the total pressure ofthe mixture was found 1 atmosphere - the partialpressure of the nitrogen (N 2) in the mixture is:[2011]
6. 500 ml of nitrogen at °27C is cooled to -“°5Cat the same pressureThe new volume becomes[1995]
7. At constant temperature - for a given mass ofan ideal gas [1991]
8. 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]
9. If a gas expands at constant temperature - itindicates that: [2008]
10. Three moles of an ideal gas expandedspontaneously into vacuumThe work done willbe: [2010]
11. In a pair of immiscible liquids - a commonsolute dissolves in both and the equilibrium isreachedThen the concentration of the solute inupper layer is [1994]
12. From a heated mixture of nitrogen - oxygenand carbon - two compounds (out of the manyobtained) are isolatedThe rates of diffusion ofthe two isolated compounds are almostidenticalThe two compounds are [1999]
13. In a closed flask of 5 litres - 1.0 g of H 2 isheated from 300 to 600 KWhich statement isnot correct? [1991]
14. Select one correct statementIn the gasequation - PV= nRT [1992]
15. An ideal gas can-™t be liquefied because[1992]
16. If P - V - M - Tand Rare pressure - Volume - molarmass - temperatureandgasconstantrespectively - then for an ideal gas - the density isgiven by [1989]
17. Dipole-induced dipole interactions arepresent in which of the following pairs: [2013]
18. Cyclopropane and oxygen at partialpressures 170 torr and 570 torr respectively aremixed in a gas cylinderWhat is the ratio of thenumber of moles of cyclopropane to the numberof moles of oxygen (nC 3H6/ nO2) ? [1996]29If 500 ml of gas Aat 400 torr and 666.6 ml ofBat 600 torr are placed in a 3 litre flask - thepressure of the system will be [1999]
19. Which is not true in case of an ideal gas?[1992]
20. 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]
21. 600 c.cof a gas at a pressure of 750 mm iscompressed to 500 c.cTaking the temperatureto remain constant - the increase in pressure - is[1995]
22. By what factor does the average velocity of agaseousmoleculeincreasewhen thetemperature (in Kelvin) is doubled? [2011]
23. Van der Waal\'s real gas - act as an ideal gas - at which conditions? [2002]
24. Pressure remaining the same - the volume of agiven mass of an ideal gas increases for everydegree centigrade rise in temperature bydefinite fraction of its volume at [1989]
25. 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]

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