19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
A relationship is obtained between density and pressure of a gas as follows
A balloon is filled with hydrogen at room temperature. It will burst, if pressure exceeds 0.2 bar. If at 1 bar pressure the gas occupied 2.27 L volume, up to what volume can be balloon be expanded?
What will be the minimum pressure required to compress 2 Litre of gas at 1 bar to 1 litre at 25oC?
The volume of ammonia obtained by the combination of 10 mL of N2 and 30 mL of H2 is :
Gay-Lussac’s law of combining volume is applicable for those gases which on mixing :
A gas is initially at 1 atm pressure. To compress it to 1/4 th of its initial volume, assuming temperature to be constant pressure to be applied is
A sample of gas has a volume of 0.2 lit measured at 1 atm pressure and 0oC. At the same pressure, but at 273K, its volume will become
A sample of gas occupies 100 ml at 27oC and 740 mm pressure. When its volume is changed to 80 ml at 740 mm pressure, the temperature of the gas will be
When gases are heated from 20 to 40ºC at constant pressure, their volumes
300 ml of a gas at 27oC is cooled to –3oC at constant pressure, the final volume is
A gas at 298 K is shifted from a vessel of 250 cm3 capacity to that of 1L capacity. The final pressure of the gas will
At 25oC temperature and 730 mm pressure, 380 mL of dry oxygen was collected. If the temperature is held constant, what volume will be oxygen occupy at 760 mm pressure?
A gas of volume 100 cc. is kept in a vessel at pressure 104 Pa maintained at temperature 24ºC if now the pressure is increased to 105 Pa, keeping the temperature constant, then the volume of the gas becomes
If 20 cm3 gas at 1 atm. is expanded to 50 cm3 at constant T, then what is the final pressure ? (a) 20 50 x (b) 50 20 x (c) x x
At constant temperature, in a given mass of an ideal gas
The kinetic molecular theory of gases explains the behavior of gases at
Gases expand and occupy all the space available to them. Which of the following assumption explain this behavior correctly?
The shape of gases is not fixed because I. Collisions of gas molecules are perfectly elastic. II. Particles of a gas are always in constant and random motion. III. Gases are highly compressible. Choose the correct opt…
According to kinetic theory of gases, I. Collision are always elastic. II. Heavier molecules transfer more momentum to the wall of container. III. Only a small number of molecules have very high velocity. IV. Between …
Pressure of a gas is due to
The kinetic energy for 14 grams of nitrogen gas at 127ºC is nearly (mol. mass of nitrogen = 28 and gas constant = 8.31 JK–1 mol–1)
The kinetic theory of gases predicts that total kinetic energy of a gaseous assembly depends on
Which one of the following is not a correct postulate of kinetic theory of gases ?
At what temperature will the molar KE of 0.3 mol of He be the same as that of 0.4 mol of argon at 400 K ?
Consider three one-litre flasks labeled A, B and C filled with the gases NO, NO2, and N2O, respectively, each at STP. In which flask do the molecules have the highest average kinetic energy?