Thermodynamics Question And Answer For Competitive Exams
11. Which law states that the specific heat of a gas remains constant at all temperatures and pressures?
(A) Charle’s law
(B) Joule’s law
(C) Regnault’s law
(D) Boyle’s law
12. Mixture of ice and water form a –
(A) Closed system
(B) Open system
(C) Isolated system
(D) Heterogeneous system
13. Which of the following is not the intensive property.
(A) Pressure
(B) Temperature
(C) Density
(D) Heat
14. Heat and work are –
(A) Point functions
(B) System properties
(C) Path functions
(D) Intensive properties
15. The term stands for –
(A) Nominal Temperature and Pressure
(B) Natural Temperature and Pressure
(C) Normal Temperature and Pressure
(D) Normal Thermodynamic Pressure
16. One watt is equal to –
(A) 1 Nm/s
(B) 1 N/mt
(C) 1 Nm/hr
(D) 1KNm/hr
17. One calorie in kgm is equal to –
(A) 0.427
(B) 4.27
(C) 42.7
(D) 427
18. If a gas vapour is allowed to expand through a very minute aperture, then such a process is known as
(A) Free expansion
(B) Hyperbolic expansion
(C) Adiabatic expansion
(D) Throttling
19. The specific heat of air increases with increase in
(A) Temperature
(B) Pressure
(C) Air flow
(D) Entropy
20. Which of the following property remains constant during throttling process.
(A) Internal energy
(B) Pressure
(C) Entropy
(D) Enthalpy
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