1
IIT-JEE 2011 Paper 1 Offline
Numerical
+4
-0
To an evacuated vessel with movable piston under external pressure of 1 atm, 0.1 mol of He and 1.0 mol of an unknown compound (vapour pressure 0.68 atm, at 0oC) are introduced. Considering the ideal gas behaviour, the total volume (in litre) of the gases at 0oC is close to
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2
IIT-JEE 2009 Paper 2 Offline
Numerical
+3
-1

At 400 K, the root mean square (rms) speed of a gas X (molecular weight = 40) is equal to the most probable speed of gas Y at 60 K. The molecular weight of the gas Y is ___________.

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3
IIT-JEE 1992
Numerical
+3
-0
At 27oC, hydrogen is leaked through a tiny hole into a vessel for 20 minutes. Another unknown gas at the same temperature and pressure as that of H2 is leaked through the same hole for 20 minutes After the effusion of the gases the mixture exerts a pressure of 6 atmosphere. The hydrogen content of the mixture is 0.7 mole. If the volume of ther container is 3 litres, what is the molecular weight of the unknown gas?
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4
IIT-JEE 1987
Numerical
+1
-0
The value of PV for 5.6 litres of an ideal gas is ________ RT, at NTP.
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