Thermodynamics Test

Result

Thermodynamics Test - 4

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

First law of thermodynamics is based on

A
law of conservation of momentum

B
law of conservation of energy

C
law of conservation of charge

D
None of the above
Question 2
4 / -1

1 cm³ of water at its boiling point absorbs 540 cal of heat to become steam with a volume of 1671 cm³. If the atmospheric pressure =1.013 × 10⁵ Nm^-2 and the mechanical equivalent of heat = 419 J cal^-1, the energy spent in this process in overcoming intermolecular forces is

A
540 cal

B
40 cal

C
500 cal

D
zero
Question 3
4 / -1

Two cylinders A and B fitted with pistons, contain equal number of moles of an ideal monoatomic gas at 400 K. The piston of A is free to move while that of B is held fixed. Same amount of heat energy is given to the gas in each cylinder. If the rise in temperature of the gas in A is 42 K, the rise in temperature of the gas in B is (γ = 5 /3)

A
25.2 K

B
35 K

C
42 K

D
70 K
Question 4
4 / -1

If 150 J of heat is added to a system and the work done by the system is 110 J, then change in internal energy will be

A
40 J

B
110 J

C
150 J

D
260 J
Question 5
4 / -1

A
1.40

B
1.50

C
1.53

D
3.07
Question 6
4 / -1

From the following statements concerning ideal gas at any given temperature T, select the correct one(s)

A
The coefficient of volume expansion at constant pressure is the same for all ideal gases

B
The average translational kinetic energy per molecule of oxygen gas is 3kT, k being Boltzmann constant

C
The mean-free path of molecules increases with increases in the pressure

D
In a gaseous mixture, the average translational kinetic energy of the molecules of each component is different
Question 7
4 / -1

An ideal gas is taken from point A to the point B as shown in the p – V diagram keeping the temperature constant. The work done in the process is

A

B

C

D

Solution
Question 8
4 / -1

A perfect gas goes from a state A to another state B by absorbing 8 × 10⁵ J of heat and doing 6.5 × 10⁵ J of external work.
It is now transferred between the same two states in another process in which it absorbs 10⁵ J of heat in the second process. Then,

A
work done on the gas is 0.5 x 10⁵ J

B
work done by gas is 0.5 x 10⁵J

C
work done on gas is 10⁵ J

D
work done by gas is 10⁵ J

Solution
Question 9
4 / -1

The ratio of specific heats of a gas is γ. The change in internal energy of one mole of the gas, when the volume changes from V to 2V at constant pressure p is

A

B

C

D
Question 10
4 / -1

A
10 J

B
70 J

C
84 J

D
134 J