# Ultimate Quiz On Gas And Temperature

9 Questions | Total Attempts: 71  Settings  .

• 1.
A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is:
• A.

4RT

• B.

5RT

• C.

15RT

• D.

11RT

• 2.
The ratio of translational and rotational kinetic energies at 100K Temperatures is 3:2. Then the internal energy of one mole gas at that temperature is[R=8.3 J/mol-K]
• A.

1175 J

• B.

1037.5 J

• C.

2075 J

• D.

4150 J

• 3.
Temperature at which Fahrenheit and Kelvin pair of scales give the same reading will be:
• A.

θ = -40

• B.

θ = 40

• C.

θ = 574.25

• D.

θ = 512.45

• 4.
In a process the pressure of an ideal gas is proportional to square of the volume of the gas. If the temperature of the gas increases in this process, then work done by this gas:
• A.

Is positive

• B.

Is negative

• C.

Is zero

• D.

May be positive

• 5.
Heat is flowing trough two cylindrical rods of same materials whose ends are maintained at similar temperatures. If diameters of the rods are in ratio 1:2 and lengths in ration 2:1, then the ratio of thermal current through them in steady state is:
• A.

1 : 6

• B.

1 : 4

• C.

1 : 6

• D.

4 : 1

• 6.
A vessel contains an ideal monoatomic gas which expands at constant pressure, when heat Q is given to it. Then the work done in expansion is:
• A.

Q

• B.

(3/5)Q

• C.

(2/5)Q

• D.

(2/3)Q

• 7.
The gas law (PV/T) = Constant for a given amount of gas is true for:
• A.

Isothermal change only

• B.

• C.

• D.

• 8.
A monoatomic ideal gas is filled in a non-conducting container. The gas can be compressed by a movable non-conducting piston. The gas is compressed slowly to 12.5% of its initial volume. The percentage increase in the temperature of the gas is:
• A.

400%

• B.

300%

• C.

-87.5%

• D.

0%

• 9.
Four particles have velocity 1, 0, 2, 3 m/s. The root mean square velocity of the particles is: (in m/s)
• A.

3.5

• B.

√3.5

• C.

1.5

• D.

√(14/3)

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