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. |
What is the product enthalpy of 1 mole of the product? The feed of a process simulator is 1 mole with enthalpy 2 J/mole, the heat input is 4 J, and the work performed is 5 J.(a) 1 J/mole(b) 2 J/mole(c) 3 J/mole(d) 5 J/moleThe question was asked during an interview for a job.I'm obligated to ask this question of Process Simulators topic in chapter Miscellaneous of Chemical Process Calculation |
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Answer» The correct OPTION is (c) 3 J/mole |
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| 2. |
The extent of adsorption of a gas on a solid depend on(a) Nature of gas(b) Pressure of gas(c) Temperature of the system(d) All of the mentionedI have been asked this question in final exam.I want to ask this question from Liquids and Solids in Equilibrium with Solids in chapter Miscellaneous of Chemical Process Calculation |
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Answer» Right option is (d) All of the mentioned |
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| 3. |
Energy in the system plus the surroundings is always(a) Conserved(b) Vary(c) Increasing(d) DecreasingThe question was asked in exam.I would like to ask this question from The Mechanical Energy balance in section Miscellaneous of Chemical Process Calculation |
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Answer» RIGHT choice is (a) Conserved Explanation: Energy in the system PLUS the SURROUNDINGS is always Conserved. |
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| 4. |
If the block gets a height of 0.2 m using some of the kinetic energy what is the kinetic energy of the block after reaching the extreme point?(a) 0.01 J(b) 0.02 J(c) 0.03 J(d) 0.04 JThe question was asked at a job interview.This is a very interesting question from Energy Conservation topic in portion Miscellaneous of Chemical Process Calculation |
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Answer» The CORRECT CHOICE is (d) 0.04 J |
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| 5. |
Langmuir isotherm Mathematical relation for ___________ that takes place at equilibrium.(a) Absorption(b) Adsorption(c) Both Adsorption and Absorption(d) None of the mentionedI had been asked this question in exam.The origin of the question is Liquids and Solids in Equilibrium with Solids in section Miscellaneous of Chemical Process Calculation |
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Answer» Correct option is (b) Adsorption |
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| 6. |
The gas molecules are held on solid surface by _________ in physical adsorption.(a) Chemical forces(b) Gravitational forces(c) Electrostatic forces(d) Vander Waal’s forcesI got this question in class test.My question comes from Liquids and Solids in Equilibrium with Solids in portion Miscellaneous of Chemical Process Calculation |
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Answer» RIGHT ANSWER is (d) Vander Waal’s forces The best explanation: Chemisorption is the adsorption when interaction between the SOLID and the condensed molecules is relatively STRONG as contrasted with physical adsorption. |
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| 7. |
Physical adsorption increase with _________ in temperature.(a) Increase(b) Decrease(c) Neither increase nor decrease(d) None of the mentionedThis question was posed to me in an interview for job.The question is from Liquids and Solids in Equilibrium with Solids topic in section Miscellaneous of Chemical Process Calculation |
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Answer» RIGHT option is (b) Decrease The EXPLANATION is: Physical adsorption INCREASE with decrease in TEMPERATURE. |
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| 8. |
When a liquid is mixed with a liquid, the energy effect is called(a) Heat of solution(b) Heat of combustion(c) Heat of reaction(d) Heat of mixingI had been asked this question in an internship interview.Query is from Heats of Solutions and Mixing in division Miscellaneous of Chemical Process Calculation |
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Answer» Right option is (d) Heat of MIXING |
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| 9. |
25 J of heat is supplied to a system and work done by the system is 15 J. What is the change in internal energy of the system?(a) 10 J(b) 20 J(c) 25 J(d) 35 JI had been asked this question in examination.Query is from Energy balance for Different type of systems topic in division Miscellaneous of Chemical Process Calculation |
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Answer» The CORRECT option is (a) 10 J |
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| 10. |
For a steady state system, 10 J of heat is supplied to the system, what is the work done by the system?(a) 10 J(b) 20 J(c) 30 J(d) 40 JThis question was addressed to me in quiz.My doubt is from Energy balance for Different type of systems topic in chapter Miscellaneous of Chemical Process Calculation |
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Answer» Correct answer is (a) 10 J |
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| 11. |
Change in the internal energy for a steady-state system is always ___________(a) Positive(b) Negative(c) Zero(d) None of the mentionedThis question was posed to me in an online interview.This interesting question is from Energy balance for Different type of systems in portion Miscellaneous of Chemical Process Calculation |
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Answer» Correct OPTION is (C) Zero |
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| 12. |
The input mass in a process simulator is X Kg and output mass is Y Kg. Then(a) X = Y(b) X > Y(c) X < Y(d) None of the mentionedI got this question by my school teacher while I was bunking the class.This interesting question is from Process Simulators topic in portion Miscellaneous of Chemical Process Calculation |
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Answer» The correct ANSWER is (a) X = Y |
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| 13. |
The physical process that occurs when gas or liquid molecules are brought into contact with a solid surface and condense on the surface(a) Absorption(b) Adsorption(c) Both Adsorption and Absorption(d) None of the mentionedThis question was posed to me in an interview for internship.The origin of the question is Liquids and Solids in Equilibrium with Solids topic in section Miscellaneous of Chemical Process Calculation |
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Answer» Correct option is (B) Adsorption |
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| 14. |
In Langmuir’s model of adsorption of a gas on a solid surface the mass of gas striking a given area of surface is ______________to the pressure of the gas.(a) Proportional(b) Anti proportional(c) Independent(d) None of the mentionedThe question was posed to me in final exam.My enquiry is from Liquids and Solids in Equilibrium with Solids in portion Miscellaneous of Chemical Process Calculation |
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Answer» Correct answer is (a) Proportional |
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| 15. |
10 J of heat is removed from a steady state system, what is the work done on the system?(a) – 10 J(b) 10 J(c) – 5 J(d) 5 JThe question was asked by my school principal while I was bunking the class.The above asked question is from Energy balance for Different type of systems in portion Miscellaneous of Chemical Process Calculation |
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Answer» The CORRECT CHOICE is (b) 10 J |
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| 16. |
20 J of heat is supplied to a system and change in internal energy of the system is 10 J. If 2 J of heat is taken out then how much was work done on the system?(a) -2 J(b) -4 J(c) -6 J(d) -8 JI had been asked this question in quiz.My enquiry is from Energy balance for Different type of systems topic in chapter Miscellaneous of Chemical Process Calculation |
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Answer» Right choice is (d) -8 J |
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| 17. |
Specific internal energy is internal energy per unit ________ of the system.(a) Mass(b) Mole(c) Volume(d) None of the mentionedI had been asked this question in unit test.My question is taken from Energy balance for Different type of systems topic in division Miscellaneous of Chemical Process Calculation |
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Answer» CORRECT answer is (a) MASS Easy explanation: Specific INTERNAL energy is internal energy PER UNIT mass of the system. |
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| 18. |
A solution composed of several components in which a property is the weighted sum of the properties of the individual components. The solution is(a) Ideal Solution(b) Non-Ideal solution(c) Real Solution(d) None of the mentionedThe question was asked in my homework.My doubt is from Heats of Solutions and Mixing topic in portion Miscellaneous of Chemical Process Calculation |
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Answer» Correct choice is (a) Ideal Solution |
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| 19. |
20 J of heat is supplied to a system and a work of 30 J performed on it. If 50 J of heat is removed from the system, which type of system is it?(a) Steady state(b) Unsteady state(c) Closed(d) None of the mentionedI got this question by my school teacher while I was bunking the class.Query is from Energy balance for Different type of systems topic in division Miscellaneous of Chemical Process Calculation |
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Answer» RIGHT answer is (a) STEADY state To ELABORATE: ∆E = 0. |
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| 20. |
If the velocity of the block is doubled, the kinetic energy of the block will be(a) Half(b) Double(c) Four times(d) None of the mentionedI have been asked this question in an online interview.The above asked question is from Energy Conservation in portion Miscellaneous of Chemical Process Calculation |
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Answer» CORRECT choice is (c) FOUR times The best I can EXPLAIN: KE = ½ mv2. |
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| 21. |
Calculation of _____________ is the fundamental of flow sheeting codes.(a) Mass balance(b) Mole balance(c) Energy balance(d) None of the mentionedI had been asked this question during an interview.Query is from Process Simulators in portion Miscellaneous of Chemical Process Calculation |
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Answer» The correct ANSWER is (a) Mass balance |
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| 22. |
Which of the following gases is adsorbed by charcoal?(a) NH3(b) H2(c) N2(d) CO2The question was posed to me during an interview.Question is taken from Liquids and Solids in Equilibrium with Solids topic in section Miscellaneous of Chemical Process Calculation |
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Answer» Right option is (a) NH3 |
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| 23. |
20 J of heat is supplied to the system and work done on the system is 15 J. What is the change in internal energy of the system?(a) 15 J(b) 20 J(c) 25 J(d) 35 JThe question was asked in an international level competition.This question is from Energy balance for Different type of systems topic in portion Miscellaneous of Chemical Process Calculation |
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Answer» RIGHT OPTION is (d) 35 J The explanation is: For the given PROCESS ∆U = – (-W) +Q. |
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| 24. |
Process simulator is the computer code used in ________________(a) Flow sheeting(b) Flow processing(c) Flow Solving(d) None of the mentionedThis question was posed to me during an internship interview.This interesting question is from Process Simulators topic in chapter Miscellaneous of Chemical Process Calculation |
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Answer» Correct ANSWER is (a) FLOW sheeting |
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| 25. |
The heat of solution can be(a) Positive(b) Negative(c) Both positive and Negative(d) None of the mentionedI have been asked this question in exam.This is a very interesting question from Heats of Solutions and Mixing topic in chapter Miscellaneous of Chemical Process Calculation |
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Answer» Correct choice is (c) Both positive and NEGATIVE |
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| 26. |
________________ is the type of energy that can be completely converted from one form to another.(a) Chemical Energy(b) Electrical Energy(c) Mechanical Energy(d) None of the mentionedThis question was posed to me in an interview for job.The above asked question is from The Mechanical Energy balance topic in division Miscellaneous of Chemical Process Calculation |
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Answer» The correct answer is (C) Mechanical ENERGY |
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| 27. |
If 25 J is work is done by a system and same amount of heat is also supplied to the system. What kind of system is it?(a) Steady state(b) Unsteady state(c) Closed(d) None of the mentionedI have been asked this question in unit test.I'm obligated to ask this question of Energy balance for Different type of systems in portion Miscellaneous of Chemical Process Calculation |
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Answer» Right CHOICE is (a) Steady state |
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| 28. |
1 Kg of steam that contains an internal energy of 10 J/Kg, if 10 J of heat is supplied to the system, what is the resultant internal energy of the system?(a) 10 J/ Kg(b) 20 J/Kg(c) 30 J/Kg(d) 40 J/KgThe question was posed to me in an interview for internship.My doubt is from Energy balance for Different type of systems topic in chapter Miscellaneous of Chemical Process Calculation |
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| 29. |
A system does a work of 15 J and the change in internal energy of the system is 10 J, what is the heat supplied to the system?(a) – 15 J(b) 15 J(c) – 25 J(d) 25 JI have been asked this question in final exam.The query is from Energy balance for Different type of systems topic in chapter Miscellaneous of Chemical Process Calculation |
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| 30. |
25 J of heat is supplied to a system and work done by the system is 10 J. What is the change in internal energy of the system?(a) 10 J(b) 15 J(c) 25 J(d) 35 JI have been asked this question during an interview.This intriguing question originated from Energy balance for Different type of systems topic in chapter Miscellaneous of Chemical Process Calculation |
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Answer» The correct option is (b) 15 J |
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| 31. |
While solving a process simulation, required balance is?(a) Material balances(b) Equilibrium relations(c) Energy balances(d) All of the mentionedThis question was posed to me during an online interview.This intriguing question originated from Process Simulators topic in division Miscellaneous of Chemical Process Calculation |
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Answer» CORRECT CHOICE is (d) All of the mentioned The best explanation: All THREE are REQUIRED for solving process SIMULATOR. |
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| 32. |
2 Kg of steam that contains an internal energy of 20 J/Kg, if 50 J of heat is supplied to the system, what is the resultant internal energy of the system?(a) 45 J/Kg(b) 40 J/Kg(c) 35 J/Kg(d) 20 J/KgI had been asked this question during a job interview.Origin of the question is Energy balance for Different type of systems in chapter Miscellaneous of Chemical Process Calculation |
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Answer» RIGHT ANSWER is (a) 45 J/Kg The EXPLANATION: 50 = 2(U – 20). |
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| 33. |
If the block gets a height of 5 m, what is the potential energy of the block?(a) 49 J(b) 98 J(c) 87 J(d) 98 JThis question was posed to me by my college professor while I was bunking the class.Enquiry is from Energy Conservation topic in chapter Miscellaneous of Chemical Process Calculation |
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Answer» CORRECT OPTION is (a) 49 J For EXPLANATION: P.E = MGH. |
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| 34. |
A mass having an initial kinetic energy of 40 Jules gets a potential energy of 10 Jules by reaching at a height h. What is the kinetic energy of the mass now?(a) 10 J(b) 20 J(c) 30 J(d) 40 JI got this question in semester exam.The origin of the question is Energy Conservation in section Miscellaneous of Chemical Process Calculation |
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Answer» Right choice is (B) 20 J |
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| 35. |
________________ is the solution of appropriate process material and energy balances.(a) Flow sheeting(b) Flow processing(c) Flow Solving(d) None of the mentionedI got this question in a national level competition.My enquiry is from Process Simulators topic in chapter Miscellaneous of Chemical Process Calculation |
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Answer» The correct choice is (a) FLOW SHEETING |
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| 36. |
Which of the following is a feature of process simulator?(a) Equipment sizing functions(b) Import and export data(c) Scheduling of batch operations(d) All of the mentionedThis question was posed to me in class test.The origin of the question is Process Simulators in section Miscellaneous of Chemical Process Calculation |
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Answer» Correct OPTION is (d) All of the mentioned |
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| 37. |
When a gaseous or solid solute is mixed with a liquid solvent the energy effect that occurs is referred to as(a) Heat of solution(b) Heat of combustion(c) Heat of reaction(d) None of the mentionedThe question was asked by my school teacher while I was bunking the class.I need to ask this question from Heats of Solutions and Mixing in division Miscellaneous of Chemical Process Calculation |
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Answer» The CORRECT choice is (a) Heat of solution |
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| 38. |
Benzene + Toluene solution is an example of(a) Ideal Solution(b) Non-Ideal solution(c) Real Solution(d) None of the mentionedI got this question in final exam.My enquiry is from Heats of Solutions and Mixing in division Miscellaneous of Chemical Process Calculation |
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Answer» Correct answer is (a) Ideal SOLUTION |
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| 39. |
________________ obeys the Raoult’s law at every range of concentration.(a) Ideal Solution(b) Non-Ideal solution(c) Real Solution(d) None of the mentionedThe question was asked during an online interview.The question is from Heats of Solutions and Mixing in portion Miscellaneous of Chemical Process Calculation |
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Answer» The correct answer is (a) Ideal Solution |
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| 40. |
If 25 J is work is done on a system and same amount of heat is also supplied. What kind of system is it?(a) Steady state(b) Unsteady state(c) Closed(d) None of the mentionedI have been asked this question in final exam.This intriguing question originated from Energy balance for Different type of systems in section Miscellaneous of Chemical Process Calculation |
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Answer» RIGHT answer is (B) UNSTEADY state Easiest EXPLANATION: ∆E is not equal to zero. |
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| 41. |
If the block uses the whole energy to gain some height, what will be that height?(a) 0.104 m(b) 0.204 m(c) 0.304 m(d) 0.404 mI had been asked this question during an internship interview.The question is from Energy Conservation in chapter Miscellaneous of Chemical Process Calculation |
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Answer» CORRECT CHOICE is (b) 0.204 m Explanation: mgh = 2 J. |
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| 42. |
The interconnection equations are for a _____________ model.(a) Mixing(b) Splitting(c) Process(d) All of the mentionedI got this question in an international level competition.This interesting question is from Process Simulators topic in portion Miscellaneous of Chemical Process Calculation |
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Answer» Correct answer is (a) Mixing |
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| 43. |
If x J of work is done on a steady system, what is the heat for the system?(a) + x J(b) –x J(c) 0 J(d) None of the mentionedThis question was addressed to me in an interview.Question is taken from Energy balance for Different type of systems in chapter Miscellaneous of Chemical Process Calculation |
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Answer» The CORRECT option is (b) –x J |
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| 44. |
When two ideal solution, each having a volume V are mixed. What is the resultant volume of the solution?(a) V(b) 2V(c) Greater than 2V(d) Less than 2VI have been asked this question in semester exam.Enquiry is from Heats of Solutions and Mixing in chapter Miscellaneous of Chemical Process Calculation |
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Answer» Right OPTION is (b) 2V |
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| 45. |
25 J of work is done by a steady state system, what is the heat supplied to the system?(a) – 25 J(b) 25 J(c) 20 J(d) – 20 JI had been asked this question during an online exam.My question is based upon Energy balance for Different type of systems in division Miscellaneous of Chemical Process Calculation |
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Answer» RIGHT option is (b) 25 J The explanation is: 0 = – 15 + Q. |
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| 46. |
What is the product enthalpy of a process simulator if the feed is 15 J, the heat input is 10 J, and the work performed is 5 J?(a) 10 J(b) 15 J(c) 20 J(d) 25 JI got this question during an online interview.My enquiry is from Process Simulators in section Miscellaneous of Chemical Process Calculation |
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Answer» The CORRECT answer is (c) 20 J |
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| 47. |
__________ is the ratio of the work done by an organism or machine to the amount of food or fuel consumed and/or to the energy expanded.(a) Efficiency(b) Work power(c) Heat capacity(d) None of the mentionedI got this question in exam.I'd like to ask this question from The Mechanical Energy balance in chapter Miscellaneous of Chemical Process Calculation |
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Answer» Right answer is (a) Efficiency |
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| 48. |
Law of conservation of energy states that(a) Total energy of the universe is always constant(b) Total energy of the universe is always increasing(c) Total energy of the universe is always decreasing(d) None of the mentionedI got this question in a job interview.Question is taken from Energy Conservation in chapter Miscellaneous of Chemical Process Calculation |
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Answer» The CORRECT ANSWER is (a) TOTAL energy of the universe is always CONSTANT |
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| 49. |
Adsorption when interaction between the solid and the condensed molecules is relatively strong as contrasted with physical adsorption.(a) Absorption(b) Adsorption(c) Chemisorption(d) None of the mentionedThis question was addressed to me during a job interview.I need to ask this question from Liquids and Solids in Equilibrium with Solids topic in portion Miscellaneous of Chemical Process Calculation |
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Answer» Correct answer is (b) ADSORPTION |
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| 50. |
Bernoulli equation is applicable for a _________state process.(a) Steady(b) Un-steady(c) Equilibrium(d) None of the mentionedThis question was addressed to me by my college professor while I was bunking the class.Origin of the question is The Mechanical Energy balance topic in division Miscellaneous of Chemical Process Calculation |
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Answer» RIGHT answer is (d) None of the mentioned To explain: BERNOULLI equation is applicable for a STEADY state process. |
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