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Thermodynamics MCQs

Select the wrong statement

September 8, 2025 by Admin
A Joule cycle consists of two constant volume and two isentropic processes.
An Otto cycle consists of two constant volume and two isentropic processes.
An Ericsson cycle consists of two constant pressure and two isothermal processes.
all of the above
✅ The correct answer is option A.
Categories Engineering, Mechanical Engineering, Thermodynamics MCQs Tags Engineering MCQs, Mechanical Engineering MCQs, Thermodynamics MCQs Leave a comment

The universal gas constant (or molar constant) of a gas is the product of

September 8, 2025 by Admin
molecular mass of the gas and the gas constant
atomic mass of the gas and the gas constant
molecular mass of the gas and the specific heat at constant pressure
molecular mass of the
✅ The correct answer is option A.
Categories Engineering, Mechanical Engineering, Thermodynamics MCQs Tags Engineering MCQs, Mechanical Engineering MCQs, Thermodynamics MCQs Leave a comment

When the expansion or compression takes place according to the law pvn = C, the process is known as

September 8, 2025 by Admin
isothermal process
adiabatic process
hyperbolic process
polytropic process
✅ The correct answer is option D.
Categories Engineering, Mechanical Engineering, Thermodynamics MCQs Tags Engineering MCQs, Mechanical Engineering MCQs, Thermodynamics MCQs Leave a comment

The amount of heat obtained by the complete combustion of 1 kg of a fuel when the products of its combustion are cooled down to the temperature of supplied air is called __________ calorific value offuel.

September 8, 2025 by Admin
higher
lower
✅ The correct answer is option A.
Categories Engineering, Mechanical Engineering, Thermodynamics MCQs Tags Engineering MCQs, Mechanical Engineering MCQs, Thermodynamics MCQs Leave a comment

Both the Ericsson and Joule’s cycle have two constant pressure processes.

September 8, 2025 by Admin
TRUE
FALSE
✅ The correct answer is option A.
Categories Uncategorized Tags Engineering MCQs, Mechanical Engineering MCQs, Thermodynamics MCQs Leave a comment

Forward reaction will be favoured for the exothermic reaction, represented by CO + H₂O ⇋ CO₂ + H₂, by

September 7, 2025 by Admin
A. Low temperature and high pressure
B. Low temperature and low pressure
C. High temperature and high pressure
D. High temperature and low pressure
✅ The correct answer is option A.
Categories Chemical Engineering, Engineering, Thermodynamics MCQs Tags Chemical Engineering MCQs, Engineering MCQs, Thermodynamics MCQs Leave a comment

At absolute zero temperature, the __________ of the gas is zero.

September 7, 2025 by Admin
A. Pressure
B. Volume
C. Mass
D. None of these
✅ The correct answer is option B.
Categories Chemical Engineering, Engineering, Thermodynamics MCQs Tags Chemical Engineering MCQs, Engineering MCQs, Thermodynamics MCQs Leave a comment

For a cyclic process, a fixed ratio between heat and work

September 7, 2025 by Admin
A. Always exists
B. May exist
C. Never exists
D. Is difficult to predict
✅ The correct answer is option A.
Categories Chemical Engineering, Engineering, Thermodynamics MCQs Tags Chemical Engineering MCQs, Engineering MCQs, Thermodynamics MCQs Leave a comment

The difference between isothermal compressibility and adiabatic compressibility for an ideal gas is

September 7, 2025 by Admin
A. 0
B. +ve
C. -ve
D. ∞
✅ The correct answer is option B.
Categories Chemical Engineering, Engineering, Thermodynamics MCQs Tags Chemical Engineering MCQs, Engineering MCQs, Thermodynamics MCQs Leave a comment

What is the value of Joule-Thomson co-efficient for an ideal gas?

September 7, 2025 by Admin
A. +ve
B. -ve
C. 0
D. ∞
✅ The correct answer is option C.
Categories Chemical Engineering, Engineering, Thermodynamics MCQs Tags Chemical Engineering MCQs, Engineering MCQs, Thermodynamics MCQs Leave a comment
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