Quiz about Humidity Charts & Their Use in Basic Chemical Engineering

Question 1

The feed of a process simulator is 2 mole with enthalpy 4 Jmole the heat input is 6 J and the work performed is 10 J what will be the product enthalpy if a mole of the product are 2?(a) 1 Jmole(b) 2 Jmole(c) 3 Jmole(d) 5 JmoleI have been asked this question during an online interview.The above asked question is from Unsteady-State Material and Energy Balances topic in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 2

The feed of a process simulator is 15 J the heat input is 8 J and the work performed is 10 J what will be the product enthalpy?(a) -3 J(b) 13 J(c) 15 J(d) 17 JThis question was posed to me at a job interview.The query is from Unsteady-State Material and Energy Balances in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 3

The feed of a process simulator is 10 mole with enthalpy 2 Jmole the heat input is 15 J and the work performed is 10 J what will be the product enthalpy if mole of the product are 5?(a) 2 Jmole(b) 3 Jmole(c) 4 Jmole(d) 5 JmoleI had been asked this question during an interview for a job.The question is from Unsteady-State Material and Energy Balances topic in section Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 4

The feed of a process simulator is 5 mole with enthalpy 3 Jmole the heat input is 15 J and the work performed is 20 J what will be the product enthalpy if a mole of the product are 2?(a) 1 Jmole(b) 2 Jmole(c) 3 Jmole(d) 5 JmoleThe question was asked in homework.I want to ask this question from Unsteady-State Material and Energy Balances topic in division Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 5

The feed of a process simulator is 10 J the heat input is 5 J and the work performed is 3 J what will be the product enthalpy?(a) 2 J(b) 5 J(c) 8 J(d) 12 JI had been asked this question during an interview for a job.My doubt stems from Unsteady-State Material and Energy Balances topic in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 6

The input mass in a process simulator is 10 Kg what will be the output mass?(a) 0(b) 5 Kg(c) 8 Kg(d) 10 KgThis question was addressed to me in an online interview.My doubt stems from Unsteady-State Material and Energy Balances topic in division Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 7

The input mass in a process simulator is 5 Kg what will be the output mass?(a) 0(b) 5 Kg(c) 8 Kg(d) 10 KgI got this question during an interview for a job.I need to ask this question from Unsteady-State Material and Energy Balances topic in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 8

What does the interconnections between the unit modules represent?(a) Information flow(b) Material flow(c) Energy flow(d) All of the mentionedThe question was posed to me in an online quiz.Question is from Unsteady-State Material and Energy Balances in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 9

The interconnection equations are for which model?(a) Mixing(b) Splitting(c) Process(d) All of the mentionedThe question was asked during a job interview.Question is from Unsteady-State Material and Energy Balances in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 10

For solving a process simulation which of the following is required?(a) Material balances(b) Equilibrium relations(c) Energy balances(d) All of the mentionedI got this question in an online interview.This key question is from Unsteady-State Material and Energy Balances in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 11

What is the fundamental of the flow sheeting codes?(a) Calculation of mass balance(b) Calculation of momentum balance(c) Calculation of force balance(d) All of the mentionedThe question was asked by my college director while I was bunking the class.My doubt is from Unsteady-State Material and Energy Balances in section Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 12

Which of the following is not found in process simulators?(a) Heat exchangers(b) Compressors(c) Splitters(d) None of the mentionedThis question was posed to me during an interview for a job.I need to ask this question from Unsteady-State Material and Energy Balances in section Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 13

What is the computer code used in flow sheeting?(a) Process simulator(b) Process settler(c) Process developer(d) All of the mentionedThis question was addressed to me in a job interview.Origin of the question is Unsteady-State Material and Energy Balances in division Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 14

What are the number of variables associated with a process stream if the number of species in the stream are 5?(a) 1(b) 3(c) 5(d) 7The question was posed to me in quiz.This key question is from Solving Material and Energy Balances Using Process Simulators in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 15

What are the number of equations associated with 2 process stream if the number of species in the stream are 3?(a) 2(b) 3(c) 5(d) 10This question was posed to me by my school principal while I was bunking the class.This intriguing question originated from Solving Material and Energy Balances Using Process Simulators topic in section Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 16

What are the solution of appropriate process material and energy balances?(a) Flow sheeting(b) Flow processing(c) Flow Solving(d) None of the mentionedI had been asked this question by my school teacher while I was bunking the class.My question is taken from Unsteady-State Material and Energy Balances topic in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 17

What are the number of equations associated with 4 process stream if the number of species in the stream are 2?(a) 4(b) 8(c) 16(d) 24I got this question in homework.My question comes from Solving Material and Energy Balances Using Process Simulators in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 18

What are the number of equations associated with 3 process stream if the number of species in the stream are 2?(a) 3(b) 4(c) 6(d) 12The question was posed to me during an interview.My question is taken from Solving Material and Energy Balances Using Process Simulators topic in section Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 19

What is the number of compositions associated with a process stream if the number of species in the stream is 4?(a) 1(b) 2(c) 3(d) 4I got this question by my school teacher while I was bunking the class.Origin of the question is Solving Material and Energy Balances Using Process Simulators in section Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 20

What are the number of compositions associated with a process stream if the number of species in the stream are 2?(a) 1(b) 2(c) 3(d) 4I had been asked this question during an interview.Enquiry is from Solving Material and Energy Balances Using Process Simulators topic in section Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 21

What are the number of variables associated with a process stream if the number of species in the stream are 2?(a) 1(b) 2(c) 3(d) 4I had been asked this question in a national level competition.This is a very interesting question from Solving Material and Energy Balances Using Process Simulators topic in division Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 22

Which of the following cannot be treated as a variable for degrees of freedom calculation?(a) Temperature(b) Pressure(c) Volume(d) WorkThis question was posed to me in homework.Question is taken from Solving Material and Energy Balances Using Process Simulators in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 23

Degrees of freedom calculation treat which kind of variables?(a) Intensive(b) Extensive(c) Both(d) None of the mentionedI have been asked this question in a national level competition.Question is from Solving Material and Energy Balances Using Process Simulators topic in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 24

What are the number of degrees of freedom if the number of variables and number of equations are 21 and 9 respectively?(a) 7(b) 9(c) 10(d) 12I got this question during an internship interview.My question is from Solving Material and Energy Balances Using Process Simulators in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 25

What are the number of degrees of freedom if the number of variables and number of equations are 15 and 10 respectively?(a) 5(b) 10(c) 15(d) 25The question was asked during an online exam.Asked question is from Solving Material and Energy Balances Using Process Simulators in division Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 26

What are the number of degrees of freedom if the number of variables and number of equations are 18 and 7 respectively?(a) 7(b) 9(c) 11(d) 15This question was posed to me during an interview.The doubt is from Solving Material and Energy Balances Using Process Simulators topic in division Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 27

What are the number of degrees of freedom if the number of variables and number of equations are 15 and 5 respectively?(a) 5(b) 10(c) 15(d) 20I got this question by my school principal while I was bunking the class.I want to ask this question from Solving Material and Energy Balances Using Process Simulators in division Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 28

What are the number of degrees of freedom if the number of variables and number of equations are 10 and 8 respectively?(a) 2(b) 8(c) 10(d) 18The question was asked in a national level competition.Question is from Solving Material and Energy Balances Using Process Simulators in section Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 29

The humidity at dry-bulb temperature of 20^oC is 30% and the humidity at dry-bulb temperature of 22^oC is 24% what is the slope of adiabatic cooling line?(a) -0.01(b) -0.02(c) -0.03(d) -0.05The question was posed to me in my homework.My doubt is from Degrees of Freedom Analysis in Steady-State Process topic in division Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 30

The humidity at dry-bulb temperature of 20^oC is 12% and the humidity at dry-bulb temperature of 23^oC is 3% what is the slope of adiabatic cooling line?(a) -0.01(b) -0.02(c) -0.03(d) -0.05This question was posed to me in an interview for job.This question is from Degrees of Freedom Analysis in Steady-State Process topic in section Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 31

The humidity at dry-bulb temperature of 20^oC is 10% and the humidity at dry-bulb temperature of 23^oC is 4% what is the slope of adiabatic cooling line?(a) -0.01(b) -0.02(c) -0.03(d) -0.05This question was posed to me in examination.The query is from Degrees of Freedom Analysis in Steady-State Process in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 32

The humidity at dry-bulb temperature of 23^oC is 30% and the humidity at dry-bulb temperature of 28^oC is 25% what is the slope of adiabatic cooling line?(a) -0.01(b) -0.02(c) -0.03(d) -0.05The question was posed to me in an interview.The origin of the question is Degrees of Freedom Analysis in Steady-State Process in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 33

The humidity at dry-bulb temperature of 20^oC is 40% and the humidity at dry-bulb temperature of 25^oC is 25% what is the slope of adiabatic cooling line?(a) 0.03(b) -0.03(c) 0.05(d) -0.05The question was asked during an online exam.Enquiry is from Degrees of Freedom Analysis in Steady-State Process topic in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 34

Enthalpy of air is 15 J and enthalpy of water vapor is 20 J if the total enthalpy of the system is 25 J what is the humidity of the system?(a) 10%(b) 50%(c) 100%(d) 200%The question was asked in an international level competition.Id like to ask this question from Degrees of Freedom Analysis in Steady-State Process topic in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 35

Enthalpy of air is 20 J and enthalpy of water vapor is 6 J if the total enthalpy of the system is 23 J what is the humidity of the system?(a) 10%(b) 20%(c) 40%(d) 50%This question was addressed to me during an interview for a job.The query is from Degrees of Freedom Analysis in Steady-State Process in division Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 36

Enthalpy of air is 10 J and enthalpy of water vapor is 15 J if the total enthalpy of the system is 25 J what is the humidity of the system?(a) 20%(b) 50%(c) 100%(d) 180%I had been asked this question in semester exam.The question is from Degrees of Freedom Analysis in Steady-State Process in section Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 37

Enthalpy of air is 5 J and enthalpy of water vapor is 10 J if the total enthalpy of the system is 25 J what is the humidity of the system?(a) 50%(b) 100%(c) 150%(d) 200%I have been asked this question in a job interview.My query is from Degrees of Freedom Analysis in Steady-State Process in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 38

In air conditioning process what has to be done first to the moist air?(a) Heating(b) Cooling(c) Heating & Cooling(d) None of mentionedThe question was posed to me in an online quiz.Im obligated to ask this question of Degrees of Freedom Analysis in Steady-State Process in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 39

What is the work of the humidification process?(a) Vaporization(b) Freezing(c) Condensing(d) None of the mentionedThis question was posed to me by my college professor while I was bunking the class.The question is from Degrees of Freedom Analysis in Steady-State Process topic in division Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 40

Enthalpy of air is 15 J and enthalpy of water vapor is 20 J if the total enthalpy of the system is 20 J what is the humidity of the system?(a) 25%(b) 50%(c) 75%(d) 100%I have been asked this question during an internship interview.Question is taken from Degrees of Freedom Analysis in Steady-State Process topic in division Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 41

What is added to the moist air in the combustion process?(a) Water(b) Carbon dioxide(c) Oxygen(d) None of the mentionedThis question was posed to me during a job interview.The query is from Degrees of Freedom Analysis in Steady-State Process topic in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 42

In condensation moist air is cooled below its which temperature?(a) Dew-point temperature(b) Dry-bulb temperature(c) Wet-bulb temperature(d) Saturation temperatureI have been asked this question during an online exam.I need to ask this question from Degrees of Freedom Analysis in Steady-State Process topic in division Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 43

What is the work of drying process?(a) Decreases the moisture content(b) Vaporizes water(c) Increases the moisture content(d) None of the mentionedThe question was posed to me in unit test.The origin of the question is Degrees of Freedom Analysis in Steady-State Process topic in section Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 44

What is the enthalpy change of 20^oC system if the heat capacity of air at 25^oC is 5 J^oC and heat capacity of water vapor at 25^oC is 10 J^oC enthalpy of vaporization is 10 J and the humidity is 20%?(a) 25 J(b) 37 J(c) 44 J(d) 51 JI have been asked this question in my homework.My doubt is from Applications of Humidity Chart topic in section Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 45

What is the enthalpy change of 10^oC system if the heat capacity of air at 20^oC is 5 J^oC and heat capacity of water vapor at 20^oC is 15 J^oC enthalpy of vaporization is 10 J and the humidity is 40%?(a) 58 J(b) 84 J(c) 114 J(d) 135 JThis question was addressed to me by my college professor while I was bunking the class.Enquiry is from Applications of Humidity Chart topic in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 46

What is the enthalpy change of 15^oC system if the heat capacity of air at 20^oC is 10 J^oC and heat capacity of water vapor at 20^oC is 20 J^oC enthalpy of vaporization is 20 J and the humidity is 50%?(a) 50 J(b) 60 J(c) 80 J(d) 110 JThe question was asked during an interview.Im obligated to ask this question of Applications of Humidity Chart in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 47

What is the enthalpy change of the mixture if the enthalpy change of air is 10 J enthalpy change of water vapor is 15 J and the humidity is 40%?(a) 10 J(b) 12 J(c) 14 J(d) 16 JI got this question in an interview.The origin of the question is Applications of Humidity Chart in portion Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 48

What is the enthalpy change of 30^oC system if the heat capacity of air at 38^oC is 5 J^oC and heat capacity of water vapor at 38^oC is 10 J^oC enthalpy of vaporization is 10 J and the humidity is 60%?(a) 14 J(b) 39 J(c) 65 J(d) 94 JThe question was asked during an interview for a job.Asked question is from Applications of Humidity Chart topic in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 49

What is the temperature of the point of intersection of adiabatic cooling line and specific humid volume line?(a) Wet-bulb temperature(b) Dry-bulb temperature(c) Dew point temperature(d) None of the mentionedThis question was addressed to me in an interview for internship.This key question is from Applications of Humidity Chart in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

Question 50

What happens to water in the humidification process?(a) Evaporates(b) Freezes(c) Saturated(d) None of the mentionedThe question was posed to me during a job interview.My question is taken from Applications of Humidity Chart in chapter Humidity Charts & their Use Analysis of the Degrees of Freedom in a Steady – State Process Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Accepted Answer

NA

1.	The feed of a process simulator is 2 mole with enthalpy 4 J/mole, the heat input is 6 J, and the work performed is 10 J, what will be the product enthalpy if a mole of the product are 2?(a) 1 J/mole(b) 2 J/mole(c) 3 J/mole(d) 5 J/moleI have been asked this question during an online interview.The above asked question is from Unsteady-State Material and Energy Balances topic in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» RIGHT CHOICE is (b) 2 J/mole The best I can explain: Energy balance, 2H = 24 + 6 – 10 = 4, => H = 2 J/mole.

2.	The feed of a process simulator is 15 J, the heat input is 8 J, and the work performed is 10 J, what will be the product enthalpy?(a) -3 J(b) 13 J(c) 15 J(d) 17 JThis question was posed to me at a job interview.The query is from Unsteady-State Material and Energy Balances in chapter Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Correct choice is (b) 13 J Easy EXPLANATION: ENERGY balance, H = 15 + 8 – 10 = 13 J.

3.	The feed of a process simulator is 10 mole with enthalpy 2 J/mole, the heat input is 15 J, and the work performed is 10 J, what will be the product enthalpy if mole of the product are 5?(a) 2 J/mole(b) 3 J/mole(c) 4 J/mole(d) 5 J/moleI had been asked this question during an interview for a job.The question is from Unsteady-State Material and Energy Balances topic in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» CORRECT option is (d) 5 J/mole For EXPLANATION: Energy BALANCE, 5H = 102 + 15 – 10 = 25, => H = 5 J/mole.

4.	The feed of a process simulator is 5 mole with enthalpy 3 J/mole, the heat input is 15 J, and the work performed is 20 J, what will be the product enthalpy if a mole of the product are 2?(a) 1 J/mole(b) 2 J/mole(c) 3 J/mole(d) 5 J/moleThe question was asked in homework.I want to ask this question from Unsteady-State Material and Energy Balances topic in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» The CORRECT answer is (d) 5 J/mole To elaborate: ENERGY BALANCE, 2H = 53 + 15 – 20 = 10, => H = 5 J/mole.

5.	The feed of a process simulator is 10 J, the heat input is 5 J, and the work performed is 3 J, what will be the product enthalpy?(a) 2 J(b) 5 J(c) 8 J(d) 12 JI had been asked this question during an interview for a job.My doubt stems from Unsteady-State Material and Energy Balances topic in chapter Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Right CHOICE is (d) 12 J To elaborate: Energy balance, H = 10 + 5 – 3 = 12 J.

6.	The input mass in a process simulator is 10 Kg, what will be the output mass?(a) 0(b) 5 Kg(c) 8 Kg(d) 10 KgThis question was addressed to me in an online interview.My doubt stems from Unsteady-State Material and Energy Balances topic in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Right option is (d) 10 Kg To explain: Mass BALANCE, PRODUCT mass = feed mass = 10 Kg.

7.	The input mass in a process simulator is 5 Kg, what will be the output mass?(a) 0(b) 5 Kg(c) 8 Kg(d) 10 KgI got this question during an interview for a job.I need to ask this question from Unsteady-State Material and Energy Balances topic in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Correct ANSWER is (B) 5 KG The best explanation: MASS BALANCE, product mass = feed mass = 5 Kg.

8.	What does the interconnections between the unit modules represent?(a) Information flow(b) Material flow(c) Energy flow(d) All of the mentionedThe question was posed to me in an online quiz.Question is from Unsteady-State Material and Energy Balances in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Correct OPTION is (d) All of the mentioned For EXPLANATION I WOULD say: The interconnections between the unit MODULES REPRESENTS all of the options.

9.	The interconnection equations are for which model?(a) Mixing(b) Splitting(c) Process(d) All of the mentionedThe question was asked during a job interview.Question is from Unsteady-State Material and Energy Balances in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Right answer is (a) Mixing The EXPLANATION is: Mixing MODEL is for INTERCONNECTION EQUATIONS.

10.	For solving a process simulation which of the following is required?(a) Material balances(b) Equilibrium relations(c) Energy balances(d) All of the mentionedI got this question in an online interview.This key question is from Unsteady-State Material and Energy Balances in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» CORRECT option is (d) All of the mentioned To explain I WOULD say: All the OPTIONS are REQUIRED for SOLVING process simulator.

11.	What is the fundamental of the flow sheeting codes?(a) Calculation of mass balance(b) Calculation of momentum balance(c) Calculation of force balance(d) All of the mentionedThe question was asked by my college director while I was bunking the class.My doubt is from Unsteady-State Material and Energy Balances in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Right OPTION is (a) Calculation of MASS balance To EXPLAIN I would say: Calculation of mass balance is the fundamental of flow SHEETING codes.

12.	Which of the following is not found in process simulators?(a) Heat exchangers(b) Compressors(c) Splitters(d) None of the mentionedThis question was posed to me during an interview for a job.I need to ask this question from Unsteady-State Material and Energy Balances in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» RIGHT ANSWER is (d) None of the mentioned To ELABORATE: Heat EXCHANGERS, COMPRESSORS, Splitters all are found in process simulators.

13.	What is the computer code used in flow sheeting?(a) Process simulator(b) Process settler(c) Process developer(d) All of the mentionedThis question was addressed to me in a job interview.Origin of the question is Unsteady-State Material and Energy Balances in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Right OPTION is (a) Process simulator The explanation is: Process simulator is the computer code USED in FLOW SHEETING.

14.	What are the number of variables associated with a process stream, if the number of species in the stream are 5?(a) 1(b) 3(c) 5(d) 7The question was posed to me in quiz.This key question is from Solving Material and Energy Balances Using Process Simulators in chapter Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» The CORRECT CHOICE is (d) 7 Easiest explanation: Nv = Nsp + 2 = 5 + 2 = 7.

15.	What are the number of equations associated with 2 process stream, if the number of species in the stream are 3?(a) 2(b) 3(c) 5(d) 10This question was posed to me by my school principal while I was bunking the class.This intriguing question originated from Solving Material and Energy Balances Using Process Simulators topic in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» The CORRECT option is (d) 10 To elaborate: NUMBER of EQUATIONS = 2(3 + 2) = 10.

16.	What are the solution of appropriate process material and energy balances?(a) Flow sheeting(b) Flow processing(c) Flow Solving(d) None of the mentionedI had been asked this question by my school teacher while I was bunking the class.My question is taken from Unsteady-State Material and Energy Balances topic in chapter Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» The correct answer is (a) FLOW sheeting The best explanation: Flow sheeting is the SOLUTION of APPROPRIATE process material and ENERGY BALANCES.

17.	What are the number of equations associated with 4 process stream, if the number of species in the stream are 2?(a) 4(b) 8(c) 16(d) 24I got this question in homework.My question comes from Solving Material and Energy Balances Using Process Simulators in chapter Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Right OPTION is (c) 16 For EXPLANATION: NUMBER of equations = 4(2 + 2) = 12.

18.	What are the number of equations associated with 3 process stream, if the number of species in the stream are 2?(a) 3(b) 4(c) 6(d) 12The question was posed to me during an interview.My question is taken from Solving Material and Energy Balances Using Process Simulators topic in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» The correct choice is (d) 12 Easy EXPLANATION: Number of equations = 3(2 + 2) = 12.

19.	What is the number of compositions associated with a process stream, if the number of species in the stream is 4?(a) 1(b) 2(c) 3(d) 4I got this question by my school teacher while I was bunking the class.Origin of the question is Solving Material and Energy Balances Using Process Simulators in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Right ANSWER is (c) 3 Best explanation: NUMBER of COMPOSITIONS = NSP – 1 = 4 – 1 = 3.

20.	What are the number of compositions associated with a process stream, if the number of species in the stream are 2?(a) 1(b) 2(c) 3(d) 4I had been asked this question during an interview.Enquiry is from Solving Material and Energy Balances Using Process Simulators topic in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Correct ANSWER is (a) 1 The best I can EXPLAIN: NUMBER of COMPOSITIONS = NSP – 1 = 2 – 1 = 1.

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21.	What are the number of variables associated with a process stream, if the number of species in the stream are 2?(a) 1(b) 2(c) 3(d) 4I had been asked this question in a national level competition.This is a very interesting question from Solving Material and Energy Balances Using Process Simulators topic in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Correct CHOICE is (d) 4 The BEST explanation: NV = NSP + 2 = 2 + 2 = 4.

22.	Which of the following cannot be treated as a variable for degrees of freedom calculation?(a) Temperature(b) Pressure(c) Volume(d) WorkThis question was posed to me in homework.Question is taken from Solving Material and Energy Balances Using Process Simulators in chapter Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» The correct choice is (C) Volume To ELABORATE: Since Volume is an EXTENSIVE variable, it cannot be treated as a variable for DEGREES of freedom calculation.

23.	Degrees of freedom calculation treat which kind of variables?(a) Intensive(b) Extensive(c) Both(d) None of the mentionedI have been asked this question in a national level competition.Question is from Solving Material and Energy Balances Using Process Simulators topic in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» The correct answer is (a) Intensive For EXPLANATION: Degrees of FREEDOM calculation treat intensive VARIABLES.

24.	What are the number of degrees of freedom if the number of variables and number of equations are 21 and 9 respectively?(a) 7(b) 9(c) 10(d) 12I got this question during an internship interview.My question is from Solving Material and Energy Balances Using Process Simulators in portion Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Correct choice is (d) 12 The EXPLANATION: Number of degrees of FREEDOM = 21 – 9 = 12.

25.	What are the number of degrees of freedom if the number of variables and number of equations are 15 and 10 respectively?(a) 5(b) 10(c) 15(d) 25The question was asked during an online exam.Asked question is from Solving Material and Energy Balances Using Process Simulators in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Correct choice is (a) 5 The BEST EXPLANATION: NUMBER of degrees of freedom = 15 – 10 = 5.

26.	What are the number of degrees of freedom if the number of variables and number of equations are 18 and 7 respectively?(a) 7(b) 9(c) 11(d) 15This question was posed to me during an interview.The doubt is from Solving Material and Energy Balances Using Process Simulators topic in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» Right option is (c) 11 The best I can EXPLAIN: NUMBER of DEGREES of freedom = 18 – 7 = 11.

27.	What are the number of degrees of freedom if the number of variables and number of equations are 15 and 5 respectively?(a) 5(b) 10(c) 15(d) 20I got this question by my school principal while I was bunking the class.I want to ask this question from Solving Material and Energy Balances Using Process Simulators in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» RIGHT choice is (b) 10 The EXPLANATION: Number of degrees of freedom = 15 – 5 = 10.

28.	What are the number of degrees of freedom if the number of variables and number of equations are 10 and 8 respectively?(a) 2(b) 8(c) 10(d) 18The question was asked in a national level competition.Question is from Solving Material and Energy Balances Using Process Simulators in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» RIGHT option is (a) 2 Explanation: Number of DEGREES of freedom = 10 – 8 = 2.

29.	The humidity at dry-bulb temperature of 20^oC is 30% and the humidity at dry-bulb temperature of 22^oC is 24%, what is the slope of adiabatic cooling line?(a) -0.01(b) -0.02(c) -0.03(d) -0.05The question was posed to me in my homework.My doubt is from Degrees of Freedom Analysis in Steady-State Process topic in division Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» The correct CHOICE is (c) -0.03 To EXPLAIN: SLOPE of ADIABATIC cooling line = (0.3 – 0.24)/(20 – 22) = -0.03.

30.	The humidity at dry-bulb temperature of 20^oC is 12% and the humidity at dry-bulb temperature of 23^oC is 3%, what is the slope of adiabatic cooling line?(a) -0.01(b) -0.02(c) -0.03(d) -0.05This question was posed to me in an interview for job.This question is from Degrees of Freedom Analysis in Steady-State Process topic in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering
Answer» RIGHT choice is (C) -0.03 Best EXPLANATION: Slope of adiabatic cooling LINE = (0.12 – 0.03)/(20 – 23) = -0.03.