A. Work is done
B. Heat transfer takes place
C. Mass flow occurs across the boundary of the system
D. No chemical reaction takes place within the system
Related Mcqs:
- For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure volume plot ?
A. Temperature – entropy
B. Temperature – pressure
C. Enthalpy – entropy
D. Enthalpy-pressure - The thermodynamic law, PVy = constant, is not followed by the __________________?
A. Free expansion of an ideal gas
B. Adiabatic expansion of steam in turbine
C. Adiabatic compression of air
D. Ideal compression of air - According to thermodynamic Fahrenheit scale, the fundamental interval between ice point to steam point is__________________?
A. 180°
B. 212°
C. 32°
D. 273° - Thermodynamic cycle involved in the working of a thermal power plant is the ______________ cycle ?
A. Joule
B. Carnot
C. Rankine
D. Brayton - In the Bayer’s process, bauxite is digested under pressure using ___________________?
A. H2SO4
B. NaOH
C. NH3
D. HCl - Carbon supply in pack carburising process is in the form of ___________________?
A. Charcoal
B. Calcium carbide
C. Hydrocarbon oil
D. Graphite - Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process ?
A. Galvanising
B. Tinning
C. Sherardizing
D. None of these - Batch process is preferred over continuous process, when the___________________?
A. Product yields and quality cannot be achieved in continuous process, because of long
residence time
B. Sales demand of product is not steady
C. Same equipment cannot be used for several processes of the same nature
D. All (A), B. & (C) - The most detrimental impurity in high pressure boiler feed water is ___________________?
A. Suspended salt
B. Dissolved salt
C. Silica
D. Turbidity - Lead is poured into the joints between two ___________________ pipes?
A. Cast iron
B. Steel
C. Concrete
D. Plastic
