#1
14th March 2016, 11:00 AM
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Gaseous State IIT JEE
I am preparing for the gaseous state chapter of Chemistry for IIT JEE exam so can you please provide me some sample questions of gaseous state chapter?
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#2
14th March 2016, 11:01 AM
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Re: Gaseous State IIT JEE
As you want the sample questions of gaseous state chapter of Chemistry for IIT JEE exam so here I am providing you. IIT JEE exam gaseous state sample questions 1.Which of the following is false about gases The molecules possess random movement in all directions Gases intermix freely without the help of external agency They are highly compressible They possess definite volume. 2.Two gases X and Y are at same temperature and pressure. The reduced temperature of X is below unity while that of Y is above unity. Thus, X can be liquefied by compression but not Y Y can be liquefied by compression but not X both X and Y can be liquefied by compression none of the statement is correct. 3.Liquefication of gases cannot be achieved by cooling compressing the gas at all temperatures compressing the gas as well as cooling compressing the gas below critical temperature. 4.A pressure of 0.101325 bar when expressed in atmospheres represents 0.01 atm 1 atm 0.1 atm 10 atm. 5.Which of the following statement is false? The product PV for fixed amount of gas is independent of temperature. Molecules of different gases have same KE at a given temperature. The gas equation is not valid at high pressure and low temperature. The gas constant per molecule is known as Boltzman constant. 6.A rubber balloon permeable to all isotopic forms of hydrogen is filled with heavy hydrogen and placed in tank of pure hydrogen. After some times, the balloon will shrink in size expand remain as such shrink to half of its size. 7.The value of universal gas constant depends upon temperature of the gas volume of the gas number of moles of gas none of these. 8.At constant volume for a foxed number of gas moles, the pressure of the gas increases with the rise in temp. because of increase in average molecular speed increased rate of collisions amongst molecules increase in molecular attraction decrease in mean free path. 9.An ideal gas is at pressure P and temperature T, in a box which has been placed in another evacuated large container. The inner box is pricked so that the gas inside it starts escaping out. What is correct? the temperature falls the temperature rises the temperature remains the same unpredictable. 10.The bottle of liquid ammonia is cooled before opening the seal so as to lower its vapour pressure surface tension viscosity extent of H-bonding. 11.The vapour density a diatomic gas with homoatomic molecules is 25. The atomoc mass of a gas will be 150 25 12.5 75. 12.Under which of the following conditions, the real gases will approach the behaviour of ideal gas? 15 atm, 200 K 0.5 atm, 500 K 1 atm, 273 K 15 atm, 500 K. 13.For ideal gas, isochors refer to the graphs between V and T at constant P P and T at constant V P and V at constant T V/T and T at constant P. 14.One litre of gas weighs 2 g at 300 K and 1 atm pressure. If the pressure is made 0.75 atm, and temperature is brought down to 250 K, the gas will occupy a volume of 2 L 1.11 L 2.22 L 0.7 L. 15.The magnitude of van der Waals forces depends upon molecular size number of electrons in the molecule polarisability of molecules all the above factors. 16.Which of the following do not pertain to the postulates of kinetic theory of gases? Molecular collisions are perfectly elastic Gas molecules move at random with ever changing speeds Molecular collision against the wall are responsible of gas pressure. KE of a gas is given by the sum of 273 and temperature in celcius scale. 17.Real gases deviate from ideal behaviour because, the molecules are colourless attract each other contain covalent bonds show Brownian movement. 18.Rate of diffusion of a gas is directly proportional to its density directly proportional to its molecular mass directly proportional to the square root of its molecular mass inversely proportional to the square root of its molecular mass. 19.For ideal gases isotherm refers to the gases at same temperatures gases at same pressure gases having same heat capacities plot of us V at constant T. 20.The temperature of ideal gas can be increased by decreasing the volume and pressure but keeping the amount constant increasing the pressure but keeping the volume and amount constant decreasing the amount but keeping the volume and pressure constant any of b or c operation. |
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