122 + Interview Questions in Rigorous Distillation Calculations in Distillation Design Page 1 InterviewSolution

1.	The K in the below equation holds for(a) Distribution Factor(b) Henry Factor(c) Vapor Factor(d) Dew factorThis question was posed to me in an interview for internship.The query is from Bubble Point Method in division Rigorous Distillation Calculations of Distillation Design
Answer» Right answer is (a) Distribution Factor For explanation I would say: K is the distribution coefficient, defined as the ratio of MOLE fraction in the VAPOR PHASE, these are not always EQUAL but are somehow equivalent to each other.

Discussion

2.	For a reboiler stage N, the middle diagonal is(a) -(1+L1/KI1D)(b) KIf and LiF(c) L1/KI1D(d) -(1+B1/KI1VN)The question was asked in an online interview.The origin of the question is Tridiagonal Matrix Method for Material Balances in portion Rigorous Distillation Calculations of Distillation Design
Answer» CORRECT choice is (d) -(1+B1/KI1VN) Easiest explanation: For a reboiler stage N the MIDDLE DIAGONAL is-(1+B1/KI1VN), -(1+L1/KI1D) representsthe next set of absorption factor of next + 1 stages.

Discussion

3.	Bubble point is at?(a) A(b) B(c) C(d) Wrong interpretationThis question was posed to me in exam.My question is taken from Recovery from Failure and Analyze Results in portion Rigorous Distillation Calculations of Distillation Design
Answer» Correct option is (a) A Best explanation: A REPRESENTS the bubble point at P-T Curve starting, as then TEMPERATURE increases and APPROACHES the DEW point.

Discussion

4.	C is the?(a) Heat capacity(b) Coefficient(c) Total component(d) Final componentI have been asked this question during an interview for a job.Query is from Recovery from Failure and Analyze Results topic in portion Rigorous Distillation Calculations of Distillation Design
Answer»

Discussion

5.	When this condition satisfies(a) Mass transfer at interface should cancel(b) Mass transfer at interface should unite(c) Mass transfer at interface should maximum(d) Mass transfer at interface should minimumI had been asked this question in my homework.The question is from Non Equilibrium Rate Based Methods topic in portion Rigorous Distillation Calculations of Distillation Design
Answer» Correct OPTION is (a) Mass transfer at INTERFACE should cancel To elaborate: Mass transfer at interface should cancel, ALSO defined as the difference between the liquid and gas QUANTITIES.

Discussion

6.	The Homotomy parameter, t travels between(a) 0 and 1(b) 0 and infinity(c) 1 and infinity(d) 1 and -1This question was posed to me during an interview.I would like to ask this question from Relaxation Method topic in division Rigorous Distillation Calculations of Distillation Design
Answer» Right option is (a) 0 and 1 The best EXPLANATION: The Homotomy PARAMETER “t” travels between 0 and 1 from G(x) to F(x), accordingly it is the varying FACTOR of RELATION between G(x) and F(x).

Discussion

7.	In global Newton method, all equations are solved together in(a) Regula falsi technique(b) 2N technique(c) Newton Raphsontechnique(d) False techniqueI got this question during an interview.My enquiry is from Global Newton Method topic in portion Rigorous Distillation Calculations of Distillation Design
Answer» CORRECT OPTION is (c) Newton Raphsontechnique For EXPLANATION: In global Newton method, all equations are solved TOGETHER in Newton Raphson TECHNIQUE, false technique is used in Regula falsi method.

Discussion

8.	Newton’s method is a fixed point iteration method, As Pn(a) g(Pn-1)(b) (Pn-1)(c) g(d) PnThis question was posed to me during a job interview.My question comes from 2N Newton Method in portion Rigorous Distillation Calculations of Distillation Design
Answer» Right choice is (a) g(Pn-1) The explanation: Always Pn = g (Pn-1) is FIXED POINT as in newton method, while other method NR and RS stage iterations are made as the problem proceeds.

Discussion

9.	The BP Method generally work best for(a) Narrow Boiling systems(b) Ideal systems(c) Nearly ideal systems(d) Any systemsThe question was posed to me in an online quiz.My question is from Bubble Point Method topic in division Rigorous Distillation Calculations of Distillation Design
Answer» The correct choice is (c) Nearly IDEAL SYSTEMS Easiest explanation: The BP Method generally WORK for Narrow Boiling systems, Ideal systems and nearly ideal systems as boiling POINT of a COMPONENT does not vary much as compared to other properties.

Discussion

10.	When Raoult’s law and Dalton’s law hold for the mixture, the K factor is(a) Pi/P(b) Yi/Xi(c) Y/X(d) X/XI had been asked this question during an online interview.This is a very interesting question from Bubble Point Method topic in chapter Rigorous Distillation Calculations of Distillation Design
Answer» Correct choice is (a) PI/P Easy EXPLANATION: When Raoult’s law and Dalton’s law hold for the MIXTURE, the K factor is Pi/P, indicating Pi as the partial pressure of system and P as total pressure.

Discussion

11.	Which method is the inverse of Thiele Geddes Method?(a) Lewis Matheson(b) Ponchan Savarit(c) McCabe Thiele(d) HomotomyThis question was addressed to me by my school teacher while I was bunking the class.This is a very interesting question from Rigorous Computational Methods topic in portion Rigorous Distillation Calculations of Distillation Design
Answer» Correct choice is (a) Lewis Matheson For EXPLANATION I WOULD say: Lewis Matheson is the inverse of Thiele Geddes method, while other listed methods are completely DIFFERENT from each other and all are used to calculate NUMBER of TRAYS.

Discussion

12.	A stage that contains more than one feed, side products or heat exchangers is called(a) Simple stage(b) Multi Stage(c) Complex stage(d) Pure stageI have been asked this question in an internship interview.The doubt is from Rigorous Distillation-Basic Concepts topic in chapter Rigorous Distillation Calculations of Distillation Design
Answer»

Discussion

13.	Extreme purity is confessed to be?(a) 90.0%(b) 99.8%(c) 99.1%(d) 99.9%The question was asked at a job interview.I need to ask this question from Problems When Setting Simulation Input in division Rigorous Distillation Calculations of Distillation Design
Answer» Correct CHOICE is (b) 99.8% Easiest explanation: Extreme PURITY is CONFESSED to be 99.8%, this has to be very précised EVEN a point 0.01% error cannot be tolerated for the purity.

Discussion

14.	How many trays are there in complete column?(a) N (3C+1)(b) N (2C+1)(c) N (5C+1)(d) N (6C+1)The question was asked in an online interview.I want to ask this question from Non Equilibrium Rate Based Methods in chapter Rigorous Distillation Calculations of Distillation Design
Answer» The correct choice is (c) N (5C+1) The explanation is: There are N (5C+1) in a COMPLETE COLUMN, as PER section packing is 5C+1, so the entire column has N stages then N (5C+1) are possible.

Discussion

15.	HJ is defined as the(a) Ideal enthalpy(b) Total enthalpy(c) Final enthalpy(d) Pure enthalpyThis question was addressed to me during an interview for a job.I'd like to ask this question from Inside Out Method topic in chapter Rigorous Distillation Calculations of Distillation Design
Answer» Right CHOICE is (a) IDEAL enthalpy The best I can explain: HJ is defined as the Ideal enthalpy based on liquid and gas compositions, while Hideal is defined as the ideal enthalpy.

Discussion

16.	The liqiud side product ln RLj is given as(a) ln (KbjLJ/VJ)(b) ln (Wbj/VJ)(c) ln (KbjLJ/WJ)(d) ln (WJ/LJ)This question was addressed to me in final exam.My question comes from Inside Out Method topic in chapter Rigorous Distillation Calculations of Distillation Design
Answer» The CORRECT choice is (d) ln (WJ/LJ) Explanation: RLj= ln (WJ/LJ) is the liquid side product, calculation of R FACTOR for both components i and as well as j are equally important as that used in SIJ.

Discussion

17.	For Boston method, ln Kbj(a) Aj +B (1j/Tj – 1/T)(b) Aj – B (1j/Tj – 1/T)(c) Aj – B (1j/Tj + 1/T)(d) (1j/Tj + 1/T)I got this question during an interview for a job.This interesting question is from Inside Out Method topic in chapter Rigorous Distillation Calculations of Distillation Design
Answer» RIGHT OPTION is (b) AJ – B (1j/Tj – 1/T) To explain I would SAY: For Boston method ln KBJ = Aj – B (1j/Tj – 1/T), this method is a revised version of the Russell method including T* i.e. equilibrium temperature.

Discussion

18.	Global method is also called as(a) Simultaneous regression method(b) Simultaneous rigorous method(c) Simultaneous correction method(d) Simultaneous matrix methodThis question was posed to me in an interview for internship.My question is taken from Global Newton Method in chapter Rigorous Distillation Calculations of Distillation Design
Answer» The correct option is (c) SIMULTANEOUS correction method The BEST explanation: GLOBAL method is also called as Simultaneous correction method, the 2N, NR and RF method are called as simultaneous rigorous method and Jacobin method as MATRIX method.

Discussion

19.	What is Fk?(a) Vector(b) Matrix(c) Factor(d) CorrectionI got this question at a job interview.I'm obligated to ask this question of Numerical Method topic in section Rigorous Distillation Calculations of Distillation Design
Answer» RIGHT option is (d) Correction Easiest explanation: As Fk= (f1 F2 f3 ……fn)^T, Fkis Vector , Matrix and Factor are CORRELATED by an empirical correlation of total functions and temperature.

Discussion

20.	The below equation represents?(a) Stages Number(b) Separation efficiency(c) Purity specification(d) Specific gainThis question was addressed to me during an online exam.This is a very interesting question from Non Equilibrium Rate Based Methods in division Rigorous Distillation Calculations of Distillation Design
Answer» Correct option is (C) Purity specification The best I can EXPLAIN: Purity specification, the ratio of QUANTITIES of the calculated to expect molar purity when subtracted from UNITY GIVES the specification of purity.

Discussion

21.	LU decomposition is used when(a) Ax (k) = Y (k)(b) Ax (k) = bX (k)(c) Ax (k) ≠ b (k)(d) Ax (k) = b (k)I had been asked this question in an interview for internship.Question is from Relaxation Method in portion Rigorous Distillation Calculations of Distillation Design
Answer» The correct option is (d) Ax (K) = b (k) Easy EXPLANATION: LU DECOMPOSITION is used when Ax (k) = b (k) is to be solved for SEVERAL different VALUES of vector b.

Discussion

22.	To perform a Bubble Point Test, gas is applied to(a) All the filter(b) Both side of wetted filter(c) One side of a wetted filter(d) Not specifiedI had been asked this question in an interview for job.My question is from Bubble Point Method in portion Rigorous Distillation Calculations of Distillation Design
Answer» The correct choice is (C) One side of a WETTED filter The best I can EXPLAIN: To perform a Bubble Point Test, gas is applied to one side of a wetted filter, with the tubing downstream.

Discussion

23.	The below equation holds for(a) K and X relation(b) K and Bubble relation(c) Components and K values relation(d) Nc RelationThis question was posed to me in an interview for internship.I'd like to ask this question from Bubble Point Method topic in portion Rigorous Distillation Calculations of Distillation Design
Answer» Right option is (b) K and BUBBLE relation For explanation: At the bubble point, the following relationship HOLDS always, representing Nc as number of components and YI as the MOLE fraction of all components.

Discussion

24.	In matrix form, system equation is expressed as(a) rivi =-fj(b) rivi =-Kj(c) rivi =-Gj(d) rivi =-ZjThis question was posed to me during an internship interview.I would like to ask this question from Stratergy of Solution using Rigorous Methods topic in division Rigorous Distillation Calculations of Distillation Design
Answer» Right CHOICE is (a) rivi =-fj Explanation: In MATRIX form system equation is expressed as rivi = -fj, where f is the function of the matrix and RI and vi are rows and COLUMNS.

Discussion

25.	Difference between k and k+1 should be very(a) Small(b) Large(c) Zero(d) UnityThe question was posed to me by my college director while I was bunking the class.My doubt stems from Stratergy of Solution using Rigorous Methods topic in chapter Rigorous Distillation Calculations of Distillation Design
Answer» The correct option is (a) SMALL Explanation: DIFFERENCE between k and k+1 should be very small, if the difference INCREASES this could cause problems like STAGE failure and FLOODING.

Discussion

26.	In Thiele Geddes method, which of the following are calculated?(a) Vapor and liquid compositions(b) Input and output fees rates(c) Reflux ratio(d) Boil upThe question was posed to me during an online interview.The query is from Rigorous Computational Methods in section Rigorous Distillation Calculations of Distillation Design
Answer» CORRECT OPTION is (a) VAPOR and LIQUID compositions For EXPLANATION: Vapor and liquid compositions are calculated In Thiele Geddes method, while reflux ratio in McCabe Thiele method.

Discussion

27.	In a multicomponent operation, i and j are(a) Variables of flow(b) Component and stage(c) Reflux and Boil up(d) Feed ratioThe question was asked in homework.My doubt is from Rigorous Distillation-Basic Concepts topic in section Rigorous Distillation Calculations of Distillation Design
Answer» Right option is (B) COMPONENT and stage The best I can EXPLAIN: In a multicomponent operation i and j are Component and stage, where I REPRESENTS the gas phase and j as the LIQUID one.

Discussion

28.	Rigorous methods are only applied to(a) Small columns(b) Large columns(c) Dual columns(d) Triple columnsI got this question in final exam.This interesting question is from Rigorous Distillation-Basic Concepts in portion Rigorous Distillation Calculations of Distillation Design
Answer» Right option is (a) SMALL COLUMNS The best explanation: Rigorous methods are only applied to Small columns for FINAL design checks, WHEREAS trial and error involves for final calculations.

Discussion

29.	Negative flow may be removed by increasing?(a) Feed(b) Reflux(c) Trays(d) StagesThis question was addressed to me by my college professor while I was bunking the class.The doubt is from Recovery from Failure and Analyze Results in chapter Rigorous Distillation Calculations of Distillation Design
Answer» RIGHT choice is (B) Reflux Easiest explanation: Negative flow may be removed by increasing Reflux, as the flow increase it causes the danger of FLOODING and THUS increasing reflux is the only option.

Discussion

30.	The following equation represents?(a) Net gain by Vapor(b) Total net gain(c) Net specific gain(d) Specific gainThe question was posed to me in exam.This intriguing question comes from Non Equilibrium Rate Based Methods topic in chapter Rigorous Distillation Calculations of Distillation Design
Answer» Right choice is (a) NET gain by Vapor Explanation: Net gain by Vapor is the PRODUCT of initial vapor gain and the difference in the activity AREA daj THUS GIVING us the net gain of vapor.

Discussion

31.	Which method uses the summation of the equations for vapor and liquid components?(a) NR Method(b) RF Method(c) Tomich Method(d) 2N MethodThe question was asked in final exam.Origin of the question is 2N Newton Method in division Rigorous Distillation Calculations of Distillation Design
Answer» The correct option is (d) 2N Method Explanation: Tomich Method uses the SUMMATION of the equations for vapor and liquid COMPONENTS, while RF and NR are BASED on the initial conditions of column.

Discussion

32.	Independent variable are in the range of(a) Tmin< Tj > Tmax(b) Tmin> Tj > Tmax(c) Tmin< Tj > Tmax(d) Tj < TmaxI got this question in an international level competition.My question is from Numerical Method topic in section Rigorous Distillation Calculations of Distillation Design
Answer»

Discussion

33.	A square nXn matrix is called(a) Jacobin Matrix(b) Raphson Matrix(c) Newton Matrix(d) 2N MatrixThis question was addressed to me in an interview.Origin of the question is Numerical Method topic in portion Rigorous Distillation Calculations of Distillation Design
Answer» The correct choice is (a) JACOBIN Matrix The explanation is: A SQUARE n X n matrix is called Jacobin Matrix, where the number of ROW PROPERTIES are equal to number of column properties.

Discussion

34.	Back substitution always starts from the(a) Lower right corner(b) Middle of corner(c) Upper right corner(d) Last rowI had been asked this question during an online exam.I need to ask this question from Tridiagonal Matrix Method for Material Balances topic in division Rigorous Distillation Calculations of Distillation Design
Answer» RIGHT CHOICE is (a) Lower right corner The BEST explanation: Back substitution ALWAYS starts from the lower right corner and all elements are CONSIDERED as the bottom to top approach method.

Discussion

35.	For a partial Condenser, the terms for lower diagonals are?(a) -(1+L1/KI1D)(b) -(Aij)(c) L1/KI1D(d) AijI got this question by my school teacher while I was bunking the class.I would like to ask this question from Tridiagonal Matrix Method for Material Balances in division Rigorous Distillation Calculations of Distillation Design
Answer» CORRECT choice is (c) L1/KI1D The explanation is: For a PARTIAL Condenser the terms for lower diagonals are L1/KI1D=Ai1 and L1/KI1D REPRESENTS the equivalent to absorption FACTOR.

Discussion

36.	Wide boiling and energy coupled systems are drastically(a) Exponential(b) Linear(c) Logarithmic(d) Semi logicalThis question was addressed to me by my college professor while I was bunking the class.I need to ask this question from Stratergy of Solution using Rigorous Methods topic in portion Rigorous Distillation Calculations of Distillation Design
Answer» Correct answer is (b) LINEAR The BEST I can EXPLAIN: Wide boiling and energy coupled SYSTEMS are drastically Linear, while d/b plots are NONLINEAR and equilibrium plots are also nonlinear.

Discussion

37.	The value of K is independent of(a) Composition(b) Feed ratio(c) Volatility(d) RefluxThe question was asked by my school teacher while I was bunking the class.My enquiry is from Rigorous Computational Methods in portion Rigorous Distillation Calculations of Distillation Design
Answer» The correct option is (a) Composition For explanation: As PER the relation the value of K is GIVEN as the function of KV = f (pure liquid)/f (pure vapor).

Discussion

38.	Degree of freedom increases, as(a) Reflux increases(b) Purity decreases(c) Purity increases(d) Reflux decreasesThis question was posed to me during an interview.This is a very interesting question from Problems When Setting Simulation Input in portion Rigorous Distillation Calculations of Distillation Design
Answer» The CORRECT answer is (c) Purity increases The best EXPLANATION: DEGREE of freedom increases as Purity increases, as they are ditrectly proportional also this can be related using phase RULE F =C –P+2.

Discussion

39.	Boil Up ratio should be?(a) Minimum(b) Maximum(c) Optimum(d) Can’t specifiedThis question was posed to me by my school principal while I was bunking the class.This interesting question is from Problems When Setting Simulation Input topic in division Rigorous Distillation Calculations of Distillation Design
Answer» Correct option is (b) Maximum The explanation: Boil Up RATIO should be Maximum, as the boil up ratio increases the DIFFICULTY of SEPARATION gets increases as they are directly PROPORTIONAL.

Discussion

40.	Feed should be located at?(a) Far from optimum(b) Below the optimum(c) Away from optimum(d) At optimumThe question was asked during an interview.My enquiry is from Problems When Setting Simulation Input in section Rigorous Distillation Calculations of Distillation Design
Answer» Right answer is (d) At optimum Best explanation: FEED stage location are anywhere ACCORDING to pinch point where the EQUILIBRIUM and striping line MEETS.

Discussion

41.	HJ is formulated as(a) H* /ϫHVJ(b) H-ϫHVJ(c) H ( ϫHVJ)(d) H* + ϫHVJI got this question in an internship interview.I want to ask this question from Inside Out Method in chapter Rigorous Distillation Calculations of Distillation Design
Answer» Correct CHOICE is (d) H* + ϫHVJ Explanation: HJ = H* + ϫHVJ, here H* is EQUILIBRIUM enthalpy and which is added to the difference of X with the current enthalpy.

Discussion

42.	ln Sbj is represented as(a) ln (KbjLJ/VJ)(b) ln (Kbj/VJ)(c) ln( KbjLJ)(d) ln (LJ)I have been asked this question in unit test.The above asked question is from Inside Out Method in division Rigorous Distillation Calculations of Distillation Design
Answer» Correct answer is (a) LN (KbjLJ/VJ) Easy EXPLANATION: ln SBJ = ln (KbjLJ/VJ), this also resembles the same as the STRIPPING factor that is USED in the matrix calculations.

Discussion

43.	There are _______ equation in each stages.(a) C+1(b) 2C+2(c) 2C+1(d) None of the aboveI got this question in an international level competition.Question is taken from Global Newton Method topic in portion Rigorous Distillation Calculations of Distillation Design
Answer» Right choice is (c) 2C+1 The EXPLANATION: There are 2C+1 Equation in each stages, there are total C components and THUS from top to bottom each has two TRAYS thus 2C+1 stages.

Discussion

44.	Absorbers have a lean end of(a) Solute(b) Substrate(c) Mother liquor(d) Extract liquidI got this question by my school principal while I was bunking the class.My question is based upon Sumrates Method topic in portion Rigorous Distillation Calculations of Distillation Design
Answer» Correct choice is (d) Extract liquid The BEST explanation: Absorbers have a lean end of OIL top FEED stage and a forward end of the liquid at the BOTTOM feed stage.

Discussion

45.	The equation below gives us the(a) Reflux equation(b) Dew point equation(c) Stage efficiency equation(d) Capillary Rise equationThis question was posed to me in an interview for internship.I'd like to ask this question from Bubble Point Method in section Rigorous Distillation Calculations of Distillation Design
Answer» The correct answer is (d) Capillary Rise equation For explanation: The equation above gives us the Capillary Rise equation, d is the DIAMETER of the capillary and P is the PRESSURE applied and cos is the ANGLE of inclination.

Discussion

46.	In Thomas algorithm(a) Stage factor is calculated(b) Reflux factor is calculated(c) Feed factor is calculated(d) Boil up factor is calculatedThe question was posed to me during an interview for a job.Query is from Tridiagonal Matrix Method for Material Balances in portion Rigorous Distillation Calculations of Distillation Design
Answer» The correct option is (a) STAGE factor is CALCULATED Easiest EXPLANATION: In THOMAS algorithm Stage factor is calculated, in various other such as MATRIX method the reflux and the feed factor are to be calculated.

Discussion

47.	MESH equations are written in terms of?(a) Mass rates(b) Flow rates(c) Vapor rates(d) Liquid rateThe question was posed to me in an online interview.The query is from Stratergy of Solution using Rigorous Methods topic in portion Rigorous Distillation Calculations of Distillation Design
Answer» The correct answer is (C) Vapor RATES For EXPLANATION I would say: MESH equations are written in terms of Vapor rates and material balance equations are written in MASS and flow rates.

Discussion

48.	Energy input and internal flow affect each other.(a) True(b) FalseI got this question in examination.The origin of the question is Problems When Setting Simulation Input topic in chapter Rigorous Distillation Calculations of Distillation Design
Answer» The CORRECT answer is (a) True The BEST EXPLANATION: Input and INTERNAL flow always affect each other, the input feed can certainly vary with VARYING heat and mass input.

Discussion

49.	The vapors side product ln Rvj is given as(a) ln (KbjLJ/VJ)(b) ln (WbjLJ/VJ)(c) ln (KbjLJ/WJ)(d) ln (WJ)The question was asked in an interview.Enquiry is from Inside Out Method in section Rigorous Distillation Calculations of Distillation Design
Answer» The correct choice is (b) ln (WbjLJ/VJ) The best EXPLANATION: ln Rvj = ln (WjLJ/VJ) is the vapors side product, L and V respectively measuring the FLOW rates of LIQUID and gas STREAMS.

Discussion

50.	The stages flow rate and the vapor flow rates are expressed, as(a) [E1 E2 E3 …. EN-1 EN, V1 V2 K3 …. VN-1 VN].(b) [T1 T2 T3 …. TN-1 TN, V1 V2 V3 …. VN-1 VN].(c) [S1 S2 S3 …. SN-1 SN, E1 E2 E3 …. EN-1 EN].(d) [K1 K2 K3 …. KN-1 KN, T1 T2 T3 …. TN-1 TN].This question was posed to me in semester exam.I want to ask this question from 2N Newton Method topic in portion Rigorous Distillation Calculations of Distillation Design
Answer» The correct answer is (B) [T1 T2 T3 …. TN-1 TN, V1 V2 V3 …. VN-1 VN]. The explanation is: As Xi= [T1 T2 T3 …. TN-1 TN, V1 V2 V3 …. VN-1 VN] ^T, where T is defined as respective temperature and the volume V CORRESPONDING to the same relation.

Discussion

Explore topic-wise InterviewSolutions in .

The K in the below equation holds for(a) Distribution Factor(b) Henry Factor(c) Vapor Factor(d) Dew factorThis question was posed to me in an interview for internship.The query is from Bubble Point Method in division Rigorous Distillation Calculations of Distillation Design

For a reboiler stage N, the middle diagonal is(a) -(1+L1/KI1D)(b) KIf and LiF(c) L1/KI1D(d) -(1+B1/KI1VN)The question was asked in an online interview.The origin of the question is Tridiagonal Matrix Method for Material Balances in portion Rigorous Distillation Calculations of Distillation Design

Bubble point is at?(a) A(b) B(c) C(d) Wrong interpretationThis question was posed to me in exam.My question is taken from Recovery from Failure and Analyze Results in portion Rigorous Distillation Calculations of Distillation Design

C is the?(a) Heat capacity(b) Coefficient(c) Total component(d) Final componentI have been asked this question during an interview for a job.Query is from Recovery from Failure and Analyze Results topic in portion Rigorous Distillation Calculations of Distillation Design

The Homotomy parameter, t travels between(a) 0 and 1(b) 0 and infinity(c) 1 and infinity(d) 1 and -1This question was posed to me during an interview.I would like to ask this question from Relaxation Method topic in division Rigorous Distillation Calculations of Distillation Design

Newton’s method is a fixed point iteration method, As Pn(a) g(Pn-1)(b) (Pn-1)(c) g(d) PnThis question was posed to me during a job interview.My question comes from 2N Newton Method in portion Rigorous Distillation Calculations of Distillation Design

The BP Method generally work best for(a) Narrow Boiling systems(b) Ideal systems(c) Nearly ideal systems(d) Any systemsThe question was posed to me in an online quiz.My question is from Bubble Point Method topic in division Rigorous Distillation Calculations of Distillation Design

Extreme purity is confessed to be?(a) 90.0%(b) 99.8%(c) 99.1%(d) 99.9%The question was asked at a job interview.I need to ask this question from Problems When Setting Simulation Input in division Rigorous Distillation Calculations of Distillation Design

How many trays are there in complete column?(a) N (3C+1)(b) N (2C+1)(c) N (5C+1)(d) N (6C+1)The question was asked in an online interview.I want to ask this question from Non Equilibrium Rate Based Methods in chapter Rigorous Distillation Calculations of Distillation Design

HJ is defined as the(a) Ideal enthalpy(b) Total enthalpy(c) Final enthalpy(d) Pure enthalpyThis question was addressed to me during an interview for a job.I'd like to ask this question from Inside Out Method topic in chapter Rigorous Distillation Calculations of Distillation Design

The liqiud side product ln RLj is given as(a) ln (KbjLJ/VJ)(b) ln (Wbj/VJ)(c) ln (KbjLJ/WJ)(d) ln (WJ/LJ)This question was addressed to me in final exam.My question comes from Inside Out Method topic in chapter Rigorous Distillation Calculations of Distillation Design

What is Fk?(a) Vector(b) Matrix(c) Factor(d) CorrectionI got this question at a job interview.I'm obligated to ask this question of Numerical Method topic in section Rigorous Distillation Calculations of Distillation Design

LU decomposition is used when(a) Ax (k) = Y (k)(b) Ax (k) = bX (k)(c) Ax (k) ≠ b (k)(d) Ax (k) = b (k)I had been asked this question in an interview for internship.Question is from Relaxation Method in portion Rigorous Distillation Calculations of Distillation Design

Difference between k and k+1 should be very(a) Small(b) Large(c) Zero(d) UnityThe question was posed to me by my college director while I was bunking the class.My doubt stems from Stratergy of Solution using Rigorous Methods topic in chapter Rigorous Distillation Calculations of Distillation Design

In a multicomponent operation, i and j are(a) Variables of flow(b) Component and stage(c) Reflux and Boil up(d) Feed ratioThe question was asked in homework.My doubt is from Rigorous Distillation-Basic Concepts topic in section Rigorous Distillation Calculations of Distillation Design

Rigorous methods are only applied to(a) Small columns(b) Large columns(c) Dual columns(d) Triple columnsI got this question in final exam.This interesting question is from Rigorous Distillation-Basic Concepts in portion Rigorous Distillation Calculations of Distillation Design

Negative flow may be removed by increasing?(a) Feed(b) Reflux(c) Trays(d) StagesThis question was addressed to me by my college professor while I was bunking the class.The doubt is from Recovery from Failure and Analyze Results in chapter Rigorous Distillation Calculations of Distillation Design

The following equation represents?(a) Net gain by Vapor(b) Total net gain(c) Net specific gain(d) Specific gainThe question was posed to me in exam.This intriguing question comes from Non Equilibrium Rate Based Methods topic in chapter Rigorous Distillation Calculations of Distillation Design

Which method uses the summation of the equations for vapor and liquid components?(a) NR Method(b) RF Method(c) Tomich Method(d) 2N MethodThe question was asked in final exam.Origin of the question is 2N Newton Method in division Rigorous Distillation Calculations of Distillation Design

Independent variable are in the range of(a) Tmin< Tj > Tmax(b) Tmin> Tj > Tmax(c) Tmin< Tj > Tmax(d) Tj < TmaxI got this question in an international level competition.My question is from Numerical Method topic in section Rigorous Distillation Calculations of Distillation Design

A square nXn matrix is called(a) Jacobin Matrix(b) Raphson Matrix(c) Newton Matrix(d) 2N MatrixThis question was addressed to me in an interview.Origin of the question is Numerical Method topic in portion Rigorous Distillation Calculations of Distillation Design

The value of K is independent of(a) Composition(b) Feed ratio(c) Volatility(d) RefluxThe question was asked by my school teacher while I was bunking the class.My enquiry is from Rigorous Computational Methods in portion Rigorous Distillation Calculations of Distillation Design

Feed should be located at?(a) Far from optimum(b) Below the optimum(c) Away from optimum(d) At optimumThe question was asked during an interview.My enquiry is from Problems When Setting Simulation Input in section Rigorous Distillation Calculations of Distillation Design

HJ is formulated as(a) H* /ϫHVJ(b) H*-ϫHVJ(c) H* ( ϫHVJ)(d) H* + ϫHVJI got this question in an internship interview.I want to ask this question from Inside Out Method in chapter Rigorous Distillation Calculations of Distillation Design

ln Sbj is represented as(a) ln (KbjLJ/VJ)(b) ln (Kbj/VJ)(c) ln( KbjLJ)(d) ln (LJ)I have been asked this question in unit test.The above asked question is from Inside Out Method in division Rigorous Distillation Calculations of Distillation Design

There are _______ equation in each stages.(a) C+1(b) 2C+2(c) 2C+1(d) None of the aboveI got this question in an international level competition.Question is taken from Global Newton Method topic in portion Rigorous Distillation Calculations of Distillation Design

Absorbers have a lean end of(a) Solute(b) Substrate(c) Mother liquor(d) Extract liquidI got this question by my school principal while I was bunking the class.My question is based upon Sumrates Method topic in portion Rigorous Distillation Calculations of Distillation Design

MESH equations are written in terms of?(a) Mass rates(b) Flow rates(c) Vapor rates(d) Liquid rateThe question was posed to me in an online interview.The query is from Stratergy of Solution using Rigorous Methods topic in portion Rigorous Distillation Calculations of Distillation Design

Energy input and internal flow affect each other.(a) True(b) FalseI got this question in examination.The origin of the question is Problems When Setting Simulation Input topic in chapter Rigorous Distillation Calculations of Distillation Design

The vapors side product ln Rvj is given as(a) ln (KbjLJ/VJ)(b) ln (WbjLJ/VJ)(c) ln (KbjLJ/WJ)(d) ln (WJ)The question was asked in an interview.Enquiry is from Inside Out Method in section Rigorous Distillation Calculations of Distillation Design

HJ is formulated as(a) H* /ϫHVJ(b) H-ϫHVJ(c) H ( ϫHVJ)(d) H* + ϫHVJI got this question in an internship interview.I want to ask this question from Inside Out Method in chapter Rigorous Distillation Calculations of Distillation Design