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?

[Pathak]

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.