Recent questions tagged kinetic-theory-of-gases

Which of the following quantities is zero on an average for the molecules of an ideal gas in equilibrium ?

asked Mar 26, 2014 by yamini.v

1 answer

Which of the following is correct for the molecules of a gas in thermal equilibrium ?

asked Mar 26, 2014 by yamini.v

1 answer

If ideal gas is taken through a process given by the graph below, identify which of the following options is incorrect:

asked Mar 11, 2014 by balaji.thirumalai

1 answer

If the plot of density $\rho$ versus temperature $T$ is as given below, identify which of the following statements is incorrect?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

Q Joules of Heat is given to a sample of Helium in such a manner that the pressure remains constant throughout. The work done by the gas is then?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

The equation of a state of gas is given by $PV = nRT + Pb$. If the gas is isothermally expanded from a volume $V$ to $2V$, what is the work done during the process?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

The density of the gaseous mixture of Hydrogen and Carbon-di-Oxide is $\large\frac{30\;g}{22.4\;l}$ at NTP. What is the % composition of Hydrogen and Carbon-di-oxide by volume in the mixture respectively?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

A student while performing an experiment forgot to add the reaction mixture and started heating the open round bottom flask on the flame. If he found the temperature to be $227 ^{\circ} C$ after heating, which was $27 ^{\circ} C$ earlier, what fraction of air would have been expelled out?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

A gaseous compound X contains 44.4% Carbon, 51.9% Nitrogen and 3.7% Hydrogen. Under like conditions, same volume of X as that of Hydrogen took 50 seconds to diffuse whereas Hydrogen took 9.62 seconds. What is the molecular formula of X?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

Consider a gas in a container which is made air tight. Now, there is a movable piston fitted with the container. The gas performs some mechanical work on the piston by moving it. The reason the gas performs its work is because of which of the following?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

2 Moles of Oxygen is heated from $0 ^{\circ} C$ at constant pressure till its volume increases by $20%$. The specific heat of Oxygen is given to be $0.22$ cal$ \;g^{-1} K^{-1}$. What is the amount of heat required?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

For an ideal gas, the following conversions are made:

asked Mar 11, 2014 by balaji.thirumalai

1 answer

An ideal gas has a molar heat capacity pressure $C_p = 2.5 R$. The gas is kept in a closed volume of $0.083 m^3$ at a temperature of $300 ^{\circ}K$ and a pressure of $10^5 N/m^2$. $200J$ of heat is supplied to the gas. Calculate the final temperature and pressure of the gas.

asked Mar 11, 2014 by balaji.thirumalai

1 answer

Two gases are sent through 2 ends of a 2m long pipe. If the gases reach at a distance of 1.5m from the end of the lighter gas, then what is the ratio of their masses (lighter: heavier), assuming pressure conditions to be the same?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

In the figure below, $N_2$ and $H_2$ are sent into the metre pipe through the two ends. At what distance $x$ will Ammonia be formed.

asked Mar 11, 2014 by balaji.thirumalai

1 answer

If N molecules of $O_2$ at $- 73^{\circ}$ possess the same kinetic energy as another sample of $H_2$ at $27^{\circ}$ then the number of molecules of $H_2$ is ?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

What would be the most likely value for C$_T$, the molar heat capacity at constant temperature?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

An open vessel containing 3 moles of an ideal gas at $ 300 ^{\circ}$ is heated to $ 500 ^{\circ}$. What is the number of moles left after heating?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

When an open vessel is heated, which of the following holds true for the ideal gas inside the vessel?

asked Mar 11, 2014 by balaji.thirumalai

1 answer

Which of the following does not represent Charle's law?

asked Feb 5, 2014 by balaji

1 answer

Which of the following does not represent Boyle's law?

asked Feb 5, 2014 by balaji

3 answers

An oxide of nitrogen at NTP has a density equal to another oxide of Nitrogen at $12^{\circ}$. If we consider pressure conditions to be the same, what are the two oxides involved?

asked Feb 5, 2014 by balaji

1 answer

At $0^{\circ}$, the density of carbon-di-oxide is the same as that of an oxide of nitrogen. The oxide of nitrogen is which of the following, considering the pressure conditions to be the same?

asked Feb 5, 2014 by balaji

1 answer

In a closed container, if we increase the temperature of the vessel, the pressure also increases due to:

asked Feb 5, 2014 by balaji

1 answer

According to Maxwell's distribution of velocities, with an increase in temperature, which of the following is true?

asked Feb 5, 2014 by balaji

1 answer

Gas-A is kept in the left partition of the container with a temperature of T at pressure 2P. Gas-B is kept in the right part of the container with a temperature of 4T at pressure P. When what is the value of the Pressure P' when the partition is removed?

asked Jan 31, 2014 by balaji

1 answer

Gas-A is kept in the left partition of the container with a volume 2V at pressure P. Gas-B is kept in the right part of the container with a volume of 3V at pressure P. Both the portions are the same temperature T. When what is the value of the Pressure P' when the partition is removed?

asked Jan 31, 2014 by balaji

1 answer

Gas-A is kept in the left partition of the container with a volume V/n at pressure P. Gas-B is kept in the right part of the container with a volume of V/(n+1) at pressure P. Both the portions are the same temperature T. When what is the value of the Pressure P' when the partition is removed?

asked Jan 31, 2014 by balaji

1 answer

Consider the following case. What is the value of P' ?

asked Jan 31, 2014 by balaji

1 answer

Hot air balloon is an application of what law?

asked Jan 31, 2014 by balaji

3 answers

Bursting of a soda bottle in summer is an example of ?

asked Jan 31, 2014 by balaji

1 answer

Which of the following graphs will be linear with zero slope in case of an ideal gas?

asked Jan 31, 2014 by balaji

1 answer

Two diatomic gases have denisities d1 and d2 under similar conditions. The ratio of the root mean square velocities is?

asked Jan 31, 2014 by balaji

1 answer

A container contains an ideal gas. The wall is hit by "n" molecules / second, each of mass "m" and moving the same velocity "u". The force exerted by the molecules on the wall is?

asked Jan 31, 2014 by balaji

1 answer

An ideal gas kept in vessel has rms spped of 200 m/s. If 10% of the gas leaks out of the vessel, then the rms speed of the remaining molecules is?

asked Jan 31, 2014 by balaji

1 answer

A liquid is boiled and its temperature (T) versus Heat supplied (Q) graph is plotted. Which of the following is the correct graph?

asked Jan 31, 2014 by balaji

1 answer

If for an ideal gas, $\large\frac{R}{C_v} $$= 0.29$, it's shape is?

asked Jan 31, 2014 by balaji

1 answer

Which of the following quantities cannot be zero on an average for the molecules of an ideal gas in equilibrium condition?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

Which of the following relations hold true for a monatomic gas?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

The specific heat of a gas:

asked Jan 28, 2014 by balaji.thirumalai

1 answer

Keeping the volume constant and increasing the temperature, which of the following will hold true?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

The average translational kinetic enegry of Oxygen molecules (molecular weight of $O_2$ is 32) at a particlular temperature is 0.032eV. What is the average translational kinetic energy of $N_2$ molecules (molecular weight is 28) at the same temperature

asked Jan 28, 2014 by balaji.thirumalai

1 answer

A vessel is filled with an ideal gas at 76 cm of Hg (mercury). The mass of gas is increased by 25% by introducing more gas at the same temperature. What is the resultant pressure of Hg in cm?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

The energy density of an ideal monoatomic gas is equal to:

asked Jan 28, 2014 by balaji.thirumalai

1 answer

The $x$-components of velocity of some particles (in $km/s$) are $6,4,2,0,-2,-4,-6$. The root-mean-square (rms) velocity calculated from these data (in $km/s$) is nearest to?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

A given sample of ideal gas is made to undergo a process in which the temperature decreases by 10% and the pressure decreases by 8%. By what % does the volume change?

asked Jan 28, 2014 by balaji.thirumalai

1 answer

By what percentage should the volume be decreased to increase the pressure by 10% at constant temperature?

asked Jan 24, 2014 by balaji.thirumalai

1 answer

If the speed of sound in Hydrogen at NTP is equal to the speed of sound in carbon-di-oxide at $T_0$, what is the value of $T_0$? (i.e, $T = 273K$)

asked Jan 24, 2014 by balaji.thirumalai

1 answer

Sound travels with a speed $v$ in hydrogen gas at NTP. At what temperatures does carbon-di-oxide have a rms (root mean square) velocity of $2v$ (Note: $T_0 = 273K$ and $\gamma$ for $H_2 = \large\frac{7}{5}$)

asked Jan 24, 2014 by balaji.thirumalai

1 answer

The temperature at which the most probably speed of oxygen is equal to the rms velocity of hydrogen at NTP is?

asked Jan 23, 2014 by balaji.thirumalai

1 answer

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