Thermodynamics Test

Result

Thermodynamics Test - 13

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Weekly Quiz Competition

Question 1
4 / -1

Coefficient of cubical expansion of water is minimum at

A
0^oC

B
4^oC

C
15.5^oC

D
100^oC
Question 2
4 / -1

In an isothermal change of an ideal gas, ΔU = 0. The change in heat energy ΔQ is equal to

A
0.5 W

B
W

C
1.5 W

D
2 W
Question 3
4 / -1

P ‒ V diagram of an ideal gas is as shown in Fig. work done by the gas in the process ABCD is

A
4 P₀V₀

B
2P₀V₀

C
3P₀V₀

D
P₀V₀
Question 4
4 / -1

A sample of ideal monoatomic gas is taken round the cycle ABCA as shown in Fig. Work done during the cycle is

A
Zero

B
3 PV

C
6 PV

D
9 PV

Solution
Question 5
4 / -1

For a monoatomic gas, work done at constant pressure is W. The heat supplied at constant volume for the same rise in temperature of the gas is

A
W/2

B
3W/2

C
5W/2

D
W

Solution
Question 6
4 / -1

The value of critical temperature in terms of Vander Waal’s constants a and b is given by

A

B

C

D
Question 7
4 / -1

An ideal monoatomic gas is taken around the cycle ABCDA as shown in P verus V diagram, Fig. Work done during the cycle is

A
PV

B
0.5 PV

C
2 PV

D
3 PV
Question 8
4 / -1

A gas expands with temperature according to the relation V = KT^2/3. Calculate work done when the tempature changes by 60 K ?

A
10 R

B
30 R

C
40 R

D
20 R

Solution
Question 9
4 / -1

Four engines are working between

A
100 K, 80 K

B
40 K, 20 K

C
60 K, 40 K

D
120 K, 100 K

Solution
Question 10
4 / -1

Work done by the system in closed path ABCA, Fig. is

A
Zero

B
(V₁ – V₂ ) (P₁ – P₂ )

C

D

Solution