Question 1 :
A gas mixture contain $1 g$ ${H_2}$ and $1 g$ ${H_e}$ temperature of gas mixture is increased from ${0^ \circ }$ to ${100^0}C$ at isobaric process. Then find given heat of gas mixture<br>$\left[ {{\gamma _{He}} = 5/3,\,{\gamma _{He}} = 7/5,R = 2\,cal/mol - K} \right]$<br>
Question 2 :
With increases of temperature, the vibration volume in any substance _____
Question 3 :
Which of the following is correct?<br>(Internal pressure in Van der Waal's equation)
Question 4 :
The relation PV=RT can describe the behavior of a real gas at :
Question 5 :
A gas has an average speed of 10 m/s and a collision frequency of 10 $s^{-1}$. What is its mean free path?<br>
Question 6 :
If the number of molecules in a gas is N then the number of molecules moving in negative X-direction will be :
Question 7 : <p class="wysiwyg-text-align-left">Two containers of equal volume containing the same gas at pressure $P_{1}$ and  $P_{2}$ and absolute temperature  $T_{1}$ and  $T_{2}$ respectively were connected with narrow capillary tube. The gas reaches a common pressure P and a common temperature T. The ratio P/T is equal to :<br/></p>
Question 8 :
The deviation of gases from the behaviour of ideal gas is due to :
Question 9 :
The height of water fall is 210 m assuming that the surface on which the water is falling is perfectly insulated and all the kinetic energy of water is dissipated as heat. Find the rise in temperature of the water :($g=10m/s^{2}$, Specific heat of water $=1000 \ cal.Kg^{-1}C^{-1}$ , 1 kcal$=$ 4200 J)<br/>
Question 10 : <p class="wysiwyg-text-align-left">The temperature at which the volume of ideal gas is zero is:</p>
Question 11 :
The number of degrees of freedom in an oxygen molecule is
Question 12 :
A large glacier melts at the base but not at the top because
Question 13 :
Which one of the following is not an assumption of kinetic theory of gases?
Question 14 :
The gas law $\left [ \dfrac{PV}{T} \right ]=$ constant is true for<br/>
Question 15 :
The internal energy of one gram of helium at $100$K and one atmospheric pressure is?
Question 16 :
When a solid object is heated, the molecules that make up the object:
Question 17 : <p class="wysiwyg-text-align-left">At constant temperature and volume, the mass of a gas is related to pressure as :</p>
Question 18 :
If the pressure of an ideal gas contained in a closed vessel is increased by $0.4$%, the increases in temperature is $1^{\circ}C$. The initial temperature of the gas is :
Question 19 :
Significant motion for the molecules of a monoatomic gas corresponds to :
Question 20 :
At what temperature will the kinetic energy of gas molecules be double of its value at 27$^o$C?
Question 21 :
A molecule of gas in a container hits one wall (1) normally and rebounds back. It suffers no collision and hits the opposite wall (2) which is at an angle of $30^o$ with wall 1.<br>Assuming the collisions to be elastic and the small collision time to be the same for both the walls, the magnitude of average force by wall 2. $(F_2)$ provided the molecule during collision satisfy<br>
Question 22 :
Gas exerts pressure on the walls of container because the molecules-
Question 24 : <p class="wysiwyg-text-align-left">A sample of $O_{2}$ gas and a sample of hydrogen gas both have the same no. of moles, the same volume and same pressure. Assuming them to be perfect gases, the ratio of temperature of oxygen gas to the temperature of hydrogen gas is :<br/></p>
Question 26 :
State whether true or false:Linear molecules have $3N-5$ vibrational degrees of freedom, whereas non linear molecules have $3N-6$ vibrational degrees of freedom, where N is no. of atoms present in a molecule.
Question 27 :
Which of the following is/are true on the basis of kinetic theory of matter?<br/><br/>
Question 28 :
The average kinetic energy of thermal neutron is of the order of :<br/>(Boltzmann's constant ${ k }_{ B }=8\times { 10 }^{ -5 }{ eV }/{ K }$)
Question 30 : <p class="wysiwyg-text-align-left">For perfect gas, the ratio of volume coefficient of expansion to pressure coefficient is :<br/></p>
Question 31 :
If the pressure of a gas is increased then its mean free path becomes :
Question 35 : <p class="wysiwyg-text-align-left">The Universal gas constant may be expressed as :<br/></p><p class="wysiwyg-text-align-left">a) 8.31 J/mole-K         c) 2.00 J/mole-K</p><p>b) 8.31 cal/mole-K       d) 2.00 cal/mole-K</p>
Question 36 :
Which of the following gives evidence to kinetic theory of gases?
Question 37 :
The mean kinetic energy of a perfect mono atomic gas molecule at the temperature $T^{o}K$ is :
Question 38 :
A heating coil is dipped in a bucket filled with water. Explain the significant mechanisms in heat flow.
Question 39 : <p class="wysiwyg-text-align-left">The parameter that determine the physical state of gas are :<br/></p><p class="wysiwyg-text-align-left">a) Pressure                  b) Volume</p><p>c) Number of moles    d) Temperature</p>
Question 41 :
In physics, the mean free path is the average distance traveled by a moving particle (such as an atom , a molecule, a photon) between successive impacts (collisions), which modify its direction or energy or other particle properties. In which of the following mean free path is used ?
Question 42 :
The value of universal gas constant is $8.3\ J/mole/K$, the mean kinetic energy of $32gm$ of oxygen at $-73^oC$ will be
