Thermodynamics Test

Result

Thermodynamics Test - 48

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following statements is correct for any thermodynamic system?

A
The internal energy changes in all processes

B
Internal energy and entropy are state functions

C
The change in entropy can never be zero

D
The work done in an adiabatic process is always zero
Question 2
4 / -1

Which of the following is incorrect regarding the first law of thermodynamics?

A
It introduces the concept of the internal energy

B
It introduces the concept of the entropy

C
It is a restatement of the principle of conservation of energy

D
None of the above
Question 3
4 / -1

Out of the following which quantity does not depend on path?

A
Temperature

B
Energy

C
Work

D
None of these
Question 4
4 / -1

If C_V = 4.96 cal/mole K, then increase in internal energy when temperature of 2 moles of this gas is increased from 340 K to 342 K

A
27.80 cal

B
19.84 cal

C
13.90 cal

D
9.92 cal

Solution
Question 5
4 / -1

Temperature is a measurement of coldness or hotness of an object. This definition is based on

A
Zeroth law of thermodynamics

B
First law of thermodynamics

C
Second law of thermodynamics

D
Newton’s law of cooling
Question 6
4 / -1

A
450

B
525

C
975

D
2025

Solution
Question 7
4 / -1

The state of a thermodynamic system is represented by

A
Pressure only

B
Volume only

C
Pressure, volume and temperature

D
Number of moles
Question 8
4 / -1

The state of a thermodynamic system is represented by

A
Pressure only

B
Volume only

C
Pressure, volume and temperature

D
Number of moles
Question 9
4 / -1

A

B

C

D

Solution
Question 10
4 / -1

100 g of water is heated from 30°C to 50°C ignoring the slight expansion of the water, the change in its internal energy is (specific heat of water is 4184 J/kg/K)

A
4.2 kJ

B
8.4 kJ

C
84 kJ

D
2.1 kJ

Solution