Yakeen NEET HINDI (2024) SHORT PRACTICE TEST - 07

Which of the following graph represents the correct Boyle's law?

• (I), (II) and (III)

• (I) and (IV)

• (II) and (III) only

• (I), (II) and (IV)

At a given temperature, the pressure of an ideal gas of density ρ is proportional to

• 1/ρ^2

• 1/ρ

• ρ^2

• ρ

Pressure versus temperature graph of an ideal gas is shown in figure. Density of the gas at point A is ρ0. Density at B will be

• 0

• 0

• 0

• 0

Two vessels having equal volume contain one mole molecular hydrogen at one atmosphere and one mole helium at two atmospheres respectively. If both samples are at the same temperature, the rms velocity of hydrogen molecule is

• Equal to that of helium

• Twice that of helium

• Half that of helium

• 2 times that of helium

The internal energy change in a system that has absorbed 2 kcal of heat and done 500 J of work is:

• 7900 J

• 8900 J

• 6400 J

• 5400 J

The r.m.s. speed of a gas molecule is 300 m/s. Calculate the r.m.s. speed if the molecular weight is doubled while the temperature is halved-

• 300 m/s

• 150 m/s

• 600 m/s

• 75 m/s

The ratio of average translational kinetic energy to rotational kinetic energy of a diatomic molecule at temperature T is

• 3

• 7/5

• 5/3

• 3/2

For a gaseous system find the change in internal energy if the heat supplied to the system is 80 J and the work done by the system is 17 J.

• 97 J

• 107 J

• 63 J

• Zero

If a body A is in thermal equilibrium with different bodies B, C and D, then

• B is in thermal equilibrium with C

• B is in thermal equilibrium with D

• C is in thermal equilibrium with D

• All of these

In the given Pressure-Temperature (P-T) diagram, the relation between volumes V1 and V2 is

• V1 = V2

• V1 < V2

• V1 > V2

• Cannot be predicted