Applied Thermodynamics MCQ. We covered all the Applied Thermodynamics MCQ in this post for free so that you can practice well for the exam.
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Applied Thermodynamics Objective MCQ for Students
Work done during the isothermal expansion of one mole of an ideal gas from 10 atm to 1 atm at 300 K is
(A) 4938.8 J
(B) 4138.8 J
(C) 5744.1 J
(D) 6257.2 J
Option c – 5744.1 J
Which of the following is not correct?
(A) Isothermal process q = -W
(B) Cyclic process q = -W
(C) Isochoric process AU = q
(D) Adiabatic process AU -W
Option d – Adiabatic process AU -W
Cooling of gas in adiabatic expansion is due to
(A) a Fall in temperature
(B) Energy not spent in doing the work
(D) Loss of energy to the surrounding.
A living system is an example of
(A) a Closed system
(B) an Open system
(C) an Isolated system
(D) Homogeneous
Option b – an Open system
10 g Cl2, CH4, N2, and O2 gases expand differently isothermally and reversibly from the same initial and final volume. Work done will be in order
(A) Cl2 > CH4> O2 > N₂
(B) CH4> O2 > N2 > Cl2
(C) O2 > N2 > CH4> Cl2
(D) CH4> N2 > O2 > Cl2
Option d – CH4> N2 > O2 > Cl2
A system absorbs 920 J of heat and does work. The change in internal energy is 460 J. Work done by the system is
(A) 250 J
(B) -250 J
(C) 460 J
(D) -460 J
Option d – -460 J
The temperature of the system decreases in
(A) Adiabatic compression
(B) Adiabatic expansion
(C) IsothermAl expansion
(D) Isothermal compression
Option b – Adiabatic expansion
Equal weights of two gases A and B give the! the same amount of work when they are expanded isothermally and reversibly from the same initial and final pressure. The gases are
(A) NO and NO₂
(B) CH4 and O2
(C) CO2 and C2H4
(D) NO and C₂H6
Option d – NO and C₂H6
For an exothermic reaction, reacting substance
(A) Less energy than products
(B) Greater energy than products
(C) Equal energy-like products
(D) Zero energy
Option a – Less energy than products
Evaporation of liquid is
(A) Exothermic
(B) Endothermic
(C) No heat change
(D) Chemical transformation
Option b – Endothermic
For an ideal gas that expands in a vacuum, work done is
(A) Positive
(B) Negative
(C) Zero
(D) Can not be predicted
Option c – Zero
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