26194.The average translational K.E. of the molecules in a sample of oxygen at 300K is 6 × 10–20 J. what is the average translational energy at 750 K?
2 × 10–19 J
1.5 × 10–19 J
3 × 10–18 J
3.5 × 10–21 J
26195.Translational kinetic energy of gas molecule, for one mole of the gas, is equal to
$\dfrac{3}{2}RT$
$\dfrac{2}{3}KT$
$\dfrac{1}{2}RT$
$\dfrac{2}{1}KT$
26196.Mean kinetic energy of perfect gas is
$\propto$ T
$\propto$ T2
$\propto \dfrac{1}{T}$
$\propto \dfrac{1}{T^2}$
26197.Mass of gas is 300 gm and its specific heat at constant volume is 750J/kg K. if gas is heated through 75°C at constant pressure of 105 N/m2, it expands by volume 0.08 × 106 cm3. find CP/CV.
1.4
1.374
1.474
1.5
26198.The volume of 2.8 gm of carbon monoxide (CO) at 27°C and 0.821 atm pressure is (R = 0.0821 litre atm/mol K)
0.3 litre
1.5 litre
3 litre
60 litre
26199.The specific heat of a gas
Has only one value
Has two values CP and CV
Is proportional to the square root of its absolute temperature
Can have any value between 0 and infinity
26202.If CP – CV = R and $\dfrac{C_P}{C_V} = \lambda$, then which relation is correct.
$C_V = \dfrac{R}{\lambda - 1}$
$C_V = \dfrac{\lambda R}{\lambda - 1}$
$C_V = \dfrac{R^2}{\lambda}$
$C_V = \dfrac{\lambda - 1}{R}$
26203.If 70 calories heat is required to raise the temperature of 2 moles of an ideal gas at constant pressure from 30°C to 35°C. the amount of heat required to raise the temperature of the same gas through the same range at constant volume is
20 cal
30 cal
40 cal
50 cal