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Correct choice is (b) Distillation and absorber

The explanation: The SR METHOD is suitable for Absorbers and STRIPPERS, whereas NR method is widely used for calculation of distillation and HIGH PRESSURE equipment’s.

The CORRECT choice is (c) 0.45018

To EXPLAIN: Solving f(X) = 0 then f(x) = COS x − 2x, x0 = 0.5, x1 = 0.45063, x2 = 0.45018, x3 = 0.45018, the ROOT is x = 0.45018.

The correct option is (a) Pore size determination

The explanation: The BUBBLE point method is the most WIDELY used for Pore size determination, Underwood, Gilliland, McCabe are used for STAGES and TRAY determination.

Right OPTION is (d) NOR relation

The explanation is: User provided internal flows are generally for REFLUX in high PURITY, overhead liquid products and NARROW building columns also called as NOR relation.

Correct choice is (d) Tray efficiency

Easy EXPLANATION: MURPHREE equation is used for calculating Tray efficiency and REFLUX ratio is CALCULATED as L/D and equilibrium conditions given by y* = x.

Right CHOICE is (a) Absorption factor

To explain I would say: AIJ is the Absorption factor for component i and stage j, while “a” denotes the mass transfer area and V/L is the STRIPPING factor.

Right option is (b) Homotomy Method

Explanation: Sneaking up is a part of Homotomy Method. Sneak is USED in the plotting of F(X)

And G(x) CURVES which does not involve EULER’s method.

The CORRECT option is (b) SCALAR factor

Easy explanation: In quasi Newton Method, Sk represents the Scalar factor, while function QUANTILES such as temperature and pressure relations are CALLED as VECTOR ones.

The correct option is (C) VIF and KiF

To explain: The adiabatic split of vapor and liquid PORTION are expressed as VIf and LIf, These are equally IMPORTANT for all compositions of vapor and liquid.

The correct choice is (a) Heat capacity

Best explanation: QC is denoted as the Heat of Condenser, condenser is ALSO considered as an alternative STAGE in the distillation COLUMN.

Right choice is (a) N (2C+1) X N (2C+1)

EXPLANATION: The FUNCTIONS and variables are of size N (2C+1) X N (2C+1) using JACOBIN’s Method, as the Jacobin FORM is n X n thus this matrix implies the BEST.

The correct answer is (c) Feed temperature

The explanation: A reversed temperature profile means PROBLEM with feed temperature in VAPOR PHASE because vapor are intended to rise up and dissolve within liquid THUS affecting liquid temperature.

Right answer is (b) 2 X N

To elaborate: The 2N NEWTON method is BASED on algorithm of 2 X N, while N X N is called as the Jacobin matrix.

The CORRECT choice is (c) Gas

Explanation: Absorbers have a rich bottom feed STAGE of Gas, as absorption OCCURS at interfacial levels the gas diffuse into the liquid SURFACES and bottom is rich of gas.

The CORRECT ANSWER is (b) 5.5

Easiest EXPLANATION: For XK+1 = Xk + h = 0.5+ 5 = 5.5.

The correct choice is (a) Xk + h

For explanation I would SAY: For any INSTANCE XK+1 is Xk + h, where h is the COMMON difference and Xk is the PREVIOUS calculated VALUE of series.

Right choice is (b) Narrow boiling is used

The BEST I can EXPLAIN: For ACCURATE Reflux estimate, narrow boiling is necessary, where separation is REQUIRED the reflux of high priority is used.

Correct OPTION is (b) Stages

Easy EXPLANATION: Lewis Matheson METHOD can be ADJUSTED for fixed number of Stages instead of REFLUX ratio fixed.

The correct option is (a) αijSbj

The explanation is: TOTAL BALANCE MATERIAL balance SIJ = αijSbj,alpha is DEFINED as the relative VOLATILITY and acts here as a correction factor.

Correct option is (b) N (2C+1)

Easy explanation: There are N (2C+1) Equation in whole COLUMN, CARRYING C COMPONENTS and N STAGES the TOTAL number of equation becomes the product of both quantities.

The CORRECT option is (b) [T1 T2 T3 …. TN-1 TN].

For explanation: The independent VARIABLES of NR Method are RELATED as Xk= [T1 T2 T3 …. TN-1 TN], here T represents the operating TEMPERATURE of the column.

The correct answer is (b) Ji XIF = -FK

To explain I would say: In matrix LANGUAGE, The Newton Raphson EQUATION is Ji Xif = -Fk,, here i represents the number of gas rows and j similarly COLUMNS of liquid.

Right OPTION is (a) Error

The explanation: It is ALWAYS an error, the DEFLECTION in ORIGINAL VALUE from the calculate value is defined as error also can be calculated as percent of error.

The correct OPTION is (d) Tray cost

To explain I would SAY: It represents the Total cost, the tray cost is a nonlinear and exponential RELATION with reflux and cost OUTCOMES.

The correct ANSWER is (a) ASSUME K=0

To ELABORATE: The first ASSUMPTION of the NR Method is assume K=0, as we assume k=0, then we calculate F(x) = 0 and then F’(x) = 0.

Correct option is (d) INSIDE Out Method

To explain I would say: Boston and SULLIVAN gave the CONCEPT of the Inside Out Method in 1973, MESH method INVOLVE the satisfaction of all equations.

Correct answer is (B) -(1+L1/KI1D)

EXPLANATION: For a partial Condenser the terms for middle diagonals -(1+L1/KI1D)=mi1 and AIJ represents the FACTOR of equilibrium.

Right choice is (c) Thiele Geddes

The EXPLANATION: Thiele Geddes is ALSO CALLED as rating method, McCabe Thiele is called TRAY analysis method and Ponchan Savarit as enthalpy method.

Correct CHOICE is (a) Flow rates

To explain: The WANG Henke equation is used for the CALCULATION of COMPONENT and flow rates, Fenske’s for relative volatility and material balance for flow rates.

The correct ANSWER is (d) K VALUE

The explanation is: In rigorous CALCULATION accuracy depends upon the K value, the RATIO of the K values is the deciding factor of accuracy of i and j COMPONENTS.

Correct OPTION is (a) Minimum

The explanation is: Reflux RATIO should be Minimum, as the reflux ratio decrease the EASE of SEPARATION gets increases as they are INVERSELY proportional.

The correct option is (a) F(x) =0

For explanation I would SAY: The SOLUTION is converged when F(x) =0 so that t=1 and H(x,t)=0, this is PROVED NUMERICALLY and cannot be CHANGED.

Correct option is (c) LINEAR systems

The best I can explain: Relaxation METHODS were developed for solving linear systems, similar as MATRIX systems the relaxation method can be USED to find values of unknowns.

Right ANSWER is (b) Liquid flow rates

The BEST I can explain: The equationrepresents the summation of Liquid flow rates, here l represent the SPECIES with L COMPOSITIONS of i and J.

The correct OPTION is (a) Convergence promoter

To EXPLAIN: θ (THETA) stands for Convergence promoter, TBp is defined as the bubble EXTRACT point and lambda as the catalyst parameter.

Right choice is (C) Venting and filtration

To elaborate: BUBBLE POINT equation is used for Venting and filtration purposes as the LIQUID evaporates the filtration of PURE liquid can be achieved using condensation technique.

The CORRECT option is (c) Upper left corner

To explain I would say: FORWARD elimination always STARTS from the upper left corner, all elements are covered as the approach is from top to BOTTOM.

Right choice is (a) STRIPPING factor

The explanation is: The term KijVj/Lj is called Stripping factor, where KIJ represents the K factor and V and L are GAS and liquid flow rates respectively.

The CORRECT choice is (d) 5C+1

The explanation: There 5C+1 PER section of PACKING, as there are C+1 stages in C equations, similar to that there EXIST 5C packs per section.

The correct option is (a) Set initial Temperature

Explanation: The initial assumption to Tomich method is to set initial Temperature for each STAGE, for any other method FEED rates and total MOLE balance are ASSUMED.

The correct option is (a) VN+1

Easy explanation: GAS RICH feed is REPRESENTED, as VN+1 and the liquid rich phases are represented as LN+1 for all cases LISTED.

The CORRECT option is (a) DIFFERENT at different places

For explanation: Wide boiling mixtures have K value is Different at different places, K value is independent of temperature, PRESSURE and other affecting PHENOMENA.

Right choice is (C) y*=X

The explanation: Azeotropic composition is y*=x, whereas the x+y* = 1 GIVES the actual mole BALANCE of gas and LIQUID at equilibrium.

The correct ANSWER is (a) Material, EQUILIBRIUM, summation and HEAT

The explanation: MESH stands for Material, equilibrium, summation and heat, all these components are equally important for the COLUMN specifications and design analysis.

Right option is (a) 5th stage

To explain I would SAY: As seen in the graph PINCH point is at 5th stage, where the operating line and the EQUILIBRIUM CURVE MEETS is called the pinch point.