InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A flow system is also known as(a) Open System(b) Closed System(c) Bounded System(d) None of the mentionedThis question was addressed to me in a job interview.My question is based upon Energy Balances topic in division Energy Balances of Chemical Process Calculation |
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Answer» CORRECT answer is (a) OPEN System The best explanation: A flow system is ALSO KNOWN as Open System. |
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| 2. |
Electrolysis of water is(a) Exothermic(b) Endothermic(c) No heat transfer(d) None of the mentionedThis question was addressed to me in an interview.I'd like to ask this question from Energy Balances for a Chemical Reaction in division Energy Balances of Chemical Process Calculation |
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Answer» CORRECT choice is (B) ENDOTHERMIC Explanation: PHOTOSYNTHESIS is an Endothermic Reaction as HEAT is absorbed. |
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| 3. |
A system that is not in steady state is in a state that is(a) Transient state(b) Unsteady state(c) Both a and b(d) Neither a nor bThe question was posed to me during an interview.The query is from Energy Balances topic in section Energy Balances of Chemical Process Calculation |
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Answer» Right option is (C) Both a and b |
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| 4. |
If a system generates electric current and the current is passed through a resistance outside the system. The work done is(a) Positive(b) Negative(c) Zero(d) None of the mentionedI had been asked this question at a job interview.This is a very interesting question from Energy Balances topic in section Energy Balances of Chemical Process Calculation |
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Answer» Right answer is (b) Negative |
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| 5. |
What is T1?(a) T, melting(b) T, freezing(c) T, vaporization(d) T, condensationThis question was posed to me in unit test.Origin of the question is Enthalpy in section Energy Balances of Chemical Process Calculation |
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Answer» The CORRECT CHOICE is (a) T, melting |
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| 6. |
Photosynthesis is _________(a) Exothermic(b) Endothermic(c) No heat transfer(d) None of the mentionedThe question was asked in my homework.My doubt stems from Energy Balances for a Chemical Reaction topic in portion Energy Balances of Chemical Process Calculation |
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Answer» The CORRECT answer is (B) Endothermic |
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| 7. |
Evaporator that concentrates a solute is an example of(a) Open, steady state process(b) Open, unsteady state process(c) Closed, steady state process(d) None of the mentionedThe question was posed to me during an interview.I'd like to ask this question from Energy Balances without Reaction topic in portion Energy Balances of Chemical Process Calculation |
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Answer» The correct ANSWER is (a) OPEN, steady state process |
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| 8. |
For an ideal mono atomic gas(a) Cp = Cv + 1.5 R(b) Cp = Cv + R(c) Cp = Cv – 1.5 R(d) Cp = Cv – RI have been asked this question during a job interview.My enquiry is from Heat Capacity topic in division Energy Balances of Chemical Process Calculation |
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Answer» Correct option is (B) CP = Cv + R |
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| 9. |
The heat capacity depends on whether the heat is added at constant __________ or constant ________(a) Volume, Temperature(b) Pressure, Volume(c) Pressure, Temperature(d) Temperature, PressureThis question was addressed to me in an online interview.My question is based upon Heat Capacity in division Energy Balances of Chemical Process Calculation |
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Answer» Correct option is (b) PRESSURE, VOLUME |
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| 10. |
Water is pumped from a storage tank through a tube of 4 cm inner diameter at the rate of 0.002 m^3/sec. What is the specific kinetic energy of the water in the tube?(a) 0.26 J/Kg(b) 1.26 J/Kg(c) 2.26 J/Kg(d) None of the mentionedI got this question in an interview.Question is from Kinetic and Potential Energy topic in portion Energy Balances of Chemical Process Calculation |
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Answer» Right choice is (b) 1.26 J/Kg |
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| 11. |
A 5 Kg body is having a Kinetic energy of 250 J. What is the velocity of the body?(a) 10 m/s(b) 15 m/s(c) 20 m/s(d) 40 m/sThe question was asked in my homework.I'm obligated to ask this question of Kinetic and Potential Energy in section Energy Balances of Chemical Process Calculation |
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Answer» CORRECT ANSWER is (a) 10 m/s Easiest EXPLANATION: K.E. = mv^2/2 . |
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| 12. |
Which one is an intensive variable?(a) Pressure(b) Temperature(c) Volume(d) All of the mentionedThe question was asked during an internship interview.I need to ask this question from Energy Balances in portion Energy Balances of Chemical Process Calculation |
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Answer» Right ANSWER is (d) All of the mentioned |
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| 13. |
Observable characteristic of a system is called(a) Phase(b) Property(c) State(d) None of the mentionedThe question was asked in an online interview.The query is from Energy Balances topic in portion Energy Balances of Chemical Process Calculation |
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Answer» The CORRECT CHOICE is (B) PROPERTY |
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| 14. |
The following is not a type of equilibrium(a) Mechanical equilibrium(b) Thermal equilibrium(c) Chemical equilibrium(d) None of the mentionedThe question was posed to me during a job interview.My question is based upon Energy Balances in portion Energy Balances of Chemical Process Calculation |
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Answer» RIGHT answer is (a) MECHANICAL EQUILIBRIUM To elaborate: Mechanical, CHEMICAL and THERMAL all are the types of equilibrium. |
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| 15. |
Boundary may be(a) Real(b) Imaginary(c) Rigid(d) All of the mentionedThe question was asked in final exam.Asked question is from Energy Balances topic in portion Energy Balances of Chemical Process Calculation |
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Answer» Correct CHOICE is (d) All of the mentioned |
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| 16. |
Enthalpy change associated with the formation of 1 mole of a compound from its constituent elements and products in their standard state is called(a) Standard Heat of Formation(b) Heat of Reaction(c) Heat of Combustion(d) None of the mentionedI had been asked this question during a job interview.The query is from Energy Balances for a Chemical Reaction topic in division Energy Balances of Chemical Process Calculation |
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Answer» Right CHOICE is (a) Standard Heat of FORMATION |
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| 17. |
_________________ is always endothermic.(a) Burning(b) Freezing(c) Condensing(d) BoilingI have been asked this question in an interview for internship.The doubt is from Energy Balances for a Chemical Reaction in section Energy Balances of Chemical Process Calculation |
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Answer» CORRECT choice is (d) Boiling For EXPLANATION: Boiling is an Endothermic REACTION as heat is ABSORBED. |
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| 18. |
The Enthalpy change of a solid directly to vapour is __________(a) Heat of Condensation(b) Heat of vaporization(c) Heat of solidification(d) Heat of sublimationI had been asked this question in an interview.The doubt is from Enthalpy topic in section Energy Balances of Chemical Process Calculation |
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Answer» CORRECT choice is (d) Heat of SUBLIMATION The best explanation: The ENTHALPY change of a solid DIRECTLY to vapour is the Heat of sublimation. |
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| 19. |
Cp is the change in enthalpy with respect to temperature at constant _____________(a) Pressure(b) Volume(c) Temperature(d) None of the mentionedI got this question in unit test.This intriguing question comes from Enthalpy in chapter Energy Balances of Chemical Process Calculation |
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Answer» The correct OPTION is (a) Pressure |
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| 20. |
In an irreversible process, there is(a) gain of heat(b) loss of heat(c) no loss of heat(d) None of theseI have been asked this question by my college professor while I was bunking the class.My doubt stems from Energy Balances topic in division Energy Balances of Chemical Process Calculation |
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Answer» The correct OPTION is (B) LOSS of HEAT |
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| 21. |
The quantity of matter or region of space chosen for study is called(a) Boundary(b) Surrounding(c) System(d) None of the mentionedThe question was asked at a job interview.Asked question is from Energy Balances topic in chapter Energy Balances of Chemical Process Calculation |
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Answer» Correct choice is (c) System |
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| 22. |
A system that is open to interchange of mass with the surrounding is called(a) Open System(b) Closed System(c) Bounded System(d) None of the mentionedI got this question during a job interview.This question is from Energy Balances topic in division Energy Balances of Chemical Process Calculation |
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Answer» CORRECT answer is (a) Open System The best I can EXPLAIN: A system that is open to interchange of mass with the SURROUNDING is CALLED Open System. |
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| 23. |
Volume of a system is(a) Intensive property(b) Extensive property(c) Neither intensive nor Extensive(d) None of the mentionedThe question was posed to me in a job interview.My question is from Energy Balances in section Energy Balances of Chemical Process Calculation |
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Answer» The correct ANSWER is (b) EXTENSIVE property |
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| 24. |
Value of the negative of the heat of combustion when the product water is a vapour, is(a) Higher Heating value(b) Lower Heating value(c) Neither Higher nor Lower Heating value(d) None of the mentionedThis question was posed to me in a job interview.I need to ask this question from Energy Balances for a Chemical Reaction topic in portion Energy Balances of Chemical Process Calculation |
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Answer» The correct choice is (B) Lower HEATING value |
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| 25. |
Burning is always an ______________ process.(a) Exothermic(b) Endothermic(c) No heat transfer(d) None of the mentionedI had been asked this question by my school teacher while I was bunking the class.Origin of the question is Energy Balances for a Chemical Reaction topic in chapter Energy Balances of Chemical Process Calculation |
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Answer» RIGHT choice is (a) Exothermic To explain I WOULD SAY: Burning is an Exothermic Reaction as heat is RELEASED. |
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| 26. |
Electrolysis of water is(a) Exothermic(b) Endothermic(c) No heat transfer(d) None of the mentionedThis question was addressed to me in exam.The query is from Energy Balances for a Chemical Reaction in chapter Energy Balances of Chemical Process Calculation |
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| 27. |
A reaction for which heat must be added to the system to maintain isothermal condition is called(a) Endothermic Reaction(b) Exothermic Reaction(c) Neutral Reaction(d) None of the mentionedThe question was posed to me during an online interview.My question is from Energy Balances for a Chemical Reaction topic in section Energy Balances of Chemical Process Calculation |
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Answer» The correct CHOICE is (a) Endothermic Reaction |
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| 28. |
The energy of a system plus surrounding can neither be created nor destroyed, Is the law of(a) Conservation of Mass(b) Conservation of Energy(c) Conservation of Momentum(d) None of the mentionedI got this question during an online exam.I would like to ask this question from Energy Balances without Reaction topic in section Energy Balances of Chemical Process Calculation |
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Answer» The correct CHOICE is (b) Conservation of Energy |
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| 29. |
Consider He gas an ideal gas, What is Cv for He?(a) 1.5 R(b) 2.5 R(c) 3.5 R(d) 4.5 RThis question was posed to me in unit test.My question is taken from Heat Capacity in division Energy Balances of Chemical Process Calculation |
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Answer» The CORRECT choice is (a) 1.5 R |
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| 30. |
What is the change in internal energy when 10 kg mol of Oxygen is heated from 200 K to 400 K at constant volume (Cv = 4000 J/(Degree Celsius)(Kg.mole))?(a) 2 MJ(b) 4 MJ(c) 6 MJ(d) 8 MJI had been asked this question in an interview.My doubt is from Internal Energy topic in chapter Energy Balances of Chemical Process Calculation |
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Answer» Correct choice is (d) 8 MJ |
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| 31. |
A mass is at 30 m of height from its reference point. What is the specific potential energy of the mass?(a) 294(b) 394(c) 495(d) 594This question was addressed to me during an online exam.I'm obligated to ask this question of Kinetic and Potential Energy in portion Energy Balances of Chemical Process Calculation |
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Answer» RIGHT OPTION is (a) 294 The explanation is: SPECIFIC potential is the potential energy of the UNIT mass. |
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| 32. |
What is the specific kinetic energy of a particle, having a velocity 5 m/s?(a) 12.5 J(b) 25 J(c) 50 J(d) 100 JI have been asked this question in an interview for job.The origin of the question is Kinetic and Potential Energy in chapter Energy Balances of Chemical Process Calculation |
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Answer» CORRECT CHOICE is (a) 12.5 J Explanation: SPECIFIC KINETIC ENERGY = v^2/2. |
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| 33. |
_____________ is performed on a system when the fluid is pushed in to the system by the surrounding.(a) Mechanical work(b) Electrical work(c) Shaft work(d) Flow workI have been asked this question in a job interview.Enquiry is from Energy Balances topic in section Energy Balances of Chemical Process Calculation |
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Answer» Correct OPTION is (d) Flow WORK |
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| 34. |
If electric work is done inside the system because of an applied voltage from outside the system, work done is ______________(a) Positive(b) Negative(c) Zero(d) None of the mentionedThis question was posed to me during an interview.Enquiry is from Energy Balances in chapter Energy Balances of Chemical Process Calculation |
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Answer» RIGHT option is (a) Positive The BEST EXPLANATION: This time WORK is done on the system. |
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| 35. |
Everything outside a system boundary is(a) Surrounding(b) Boundary line(c) Open system(d) Closed systemI got this question in an interview.I'm obligated to ask this question of Energy Balances topic in portion Energy Balances of Chemical Process Calculation |
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Answer» Correct CHOICE is (a) SURROUNDING |
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| 36. |
The negative of the heat of fusion is(a) Heat of Condensation(b) Heat of vaporization(c) Heat of solidification(d) Heat of sublimationThis question was posed to me in quiz.My query is from Enthalpy topic in division Energy Balances of Chemical Process Calculation |
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Answer» The correct ANSWER is (c) Heat of SOLIDIFICATION |
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| 37. |
A system that is not in steady state is in a state that is(a) Transient state(b) Unsteady state(c) Both a and b(d) Neither a nor bThe question was posed to me during an online interview.My question is based upon Energy Balances in portion Energy Balances of Chemical Process Calculation |
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| 38. |
A flow system is also known as(a) Open System(b) Closed System(c) Bounded System(d) None of the mentionedThe question was posed to me in final exam.The query is from Energy Balances in portion Energy Balances of Chemical Process Calculation |
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| 39. |
The properties of a system remain invariant under a balance of potential, is(a) Equilibrium(b) Phase transition(c) Transient phase(d) None of the mentionedThe question was posed to me in exam.I'm obligated to ask this question of Energy Balances in portion Energy Balances of Chemical Process Calculation |
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Answer» The CORRECT choice is (a) EQUILIBRIUM |
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| 40. |
A system that does not interchange mass with the surrounding is a _____________(a) Open System(b) Closed System(c) Bounded System(d) None of the mentionedThis question was addressed to me by my school teacher while I was bunking the class.This interesting question is from Energy Balances topic in portion Energy Balances of Chemical Process Calculation |
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Answer» The CORRECT answer is (b) CLOSED System |
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| 41. |
Burning Butane in a gas grill is(a) Exothermic(b) Endothermic(c) No heat transfer(d) None of the mentionedThe question was posed to me during an online exam.Asked question is from Energy Balances for a Chemical Reaction in chapter Energy Balances of Chemical Process Calculation |
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Answer» Correct option is (a) Exothermic |
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| 42. |
measurement of Cp is _______ than Cv.(a) Safer(b) Dangerous(c) Can`t say(d) None of the mentionedThis question was posed to me in an interview.Origin of the question is Heat Capacity in portion Energy Balances of Chemical Process Calculation |
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Answer» Right OPTION is (a) Safer |
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| 43. |
The amount of heat required to raise the temperature of the unit mass of gas through one degree at constant pressure is(a) Cv(b) Cp(c) Latent heat(d) none of the mentionedThis question was posed to me during an interview for a job.This intriguing question comes from Heat Capacity in division Energy Balances of Chemical Process Calculation |
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Answer» The correct ANSWER is (b) Cp |
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| 44. |
An enthalpy change that involve a phase transition is(a) Heat of the reaction(b) Latent Heat(c) Heat of fusion(d) Heat of sublimationI have been asked this question during a job interview.Question is taken from Enthalpy topic in chapter Energy Balances of Chemical Process Calculation |
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Answer» RIGHT option is (b) Latent Heat To explain: An ENTHALPY change that involve a phase transition is Latent heat. |
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| 45. |
The Enthalpy change for the phase transition of melting is ___________(a) Heat of Condensation(b) Heat of fusion(c) Heat of solidification(d) Heat of sublimationThe question was asked in an international level competition.My question comes from Enthalpy topic in division Energy Balances of Chemical Process Calculation |
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Answer» Correct option is (b) Heat of fusion |
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| 46. |
Absolute values of internal energies ________ calculated.(a) can be(b) can not be(c) may be(d) may not beThe question was asked in an internship interview.This question is from Internal Energy topic in chapter Energy Balances of Chemical Process Calculation |
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Answer» Right ANSWER is (a) can be |
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| 47. |
Specific internal energy _________ stored.(a) can be(b) can not be(c) may be(d) may not beThe question was posed to me at a job interview.Origin of the question is Internal Energy topic in portion Energy Balances of Chemical Process Calculation |
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Answer» Right answer is (a) can be |
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| 48. |
___________ occurs when a system causes a _______ to turn against an external mechanical resistance.(a) Mechanical work, Mechanical(b) Electrical work, Electrical(c) Shaft work, Shaft(d) Flow work, FlowThe question was posed to me in a job interview.The query is from Energy Balances in portion Energy Balances of Chemical Process Calculation |
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Answer» The correct OPTION is (c) Shaft WORK, Shaft |
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| 49. |
_______________ work that occurs because of a ________ force that moves the boundary of a system.(a) Mechanical, Mechanical(b) Electrical, Electrical(c) Shaft, Shaft(d) Flow, FlowI have been asked this question during an interview for a job.This interesting question is from Energy Balances in division Energy Balances of Chemical Process Calculation |
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Answer» The correct ANSWER is (a) Mechanical, Mechanical |
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| 50. |
Which one is an example of _______ phase.(a) Solid(b) Liquid(c) Gas(d) All of the mentionedThe question was asked during an interview for a job.This interesting question is from Energy Balances topic in section Energy Balances of Chemical Process Calculation |
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Answer» The CORRECT choice is (d) All of the mentioned |
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