What will be the extraction factor of the process of extraction for the first stage of the extraction under the staged counter current process of extraction?

Five plays K, L, M, N and O are to be staged from Monday to Friday of a week. On each day, only one play will be staged. N or O should not be either the first or last to be staged. O should be immediately followed by M. L should be staged immediately after N. One play is staged between K and L. Which is the second play to be staged ?

A

L

B

O

C

M

D

N

Six plays P, Q, R. S, T and U are to be staged from Monday and ending on Saturday, not necessarily in same order. Play R is staged on Tuesday, Plays P, U and Q are staged one after the other in same order. Play S is not staged on Monday or Wednesday. Which play is staged after R ?

A

P

B

S

C

Q

D

T

Six plays A, B, C, D, E and F are to be staged on 6 days of the week starting from Monday and ending on Saturday. Play D is staged on Tuesday. Plays A, C, F are staged one after the other in the same order. Play E is not staged on a Monday or a Wednesday. Which plays are staged on Monday & Wednesday respectively?

A

B & A

B

A & F

C

B & C

D

C & E

What will be the concentration of the raffinate at the nth stage of the extraction process in the staged counter current of extraction?

A

CRn+1 = \((\frac{\lambda^{n+1}-1}{λ-1})\) – CR1

B

CRn+1 = \((\frac{\lambda^{n+1}-1}{λ-1})\) CR1

C

CRn+1 = \((\frac{\lambda^{n+1}-1}{λ+1})\) CR1

D

CRn+1 = \((\frac{\lambda^{n+1}-1}{λ-1})\) + CR1

What will be the equation for the solute material balance over the second stage of the staged counter current process of extraction?

A

CR3 = (1 – λ + λ2)CR1

B

CR3 = (1 + λ – λ2)CR1

C

CR3 = (λ + λ2)CR1

D

CR3 = (1 + λ + λ2)CR1

How the feed stream does enters the nth stage of the staged counter current extraction?

A

Extracting solvent enters 0th stage

B

Extracting solvent enters 2nd stage

C

Extracting solvent enters nth stage

D

Extracting solvent enters 1st stage

How to estimate the fraction extracted by the process of staged counter current process of extraction?

A

p = \(\frac{Q_E C_{En}}{Q_R C_{Rn+1}}\)

B

p = \(\frac{Q_E – C_{En}}{Q_R C_{Rn+1}}\)

C

p = \(\frac{Q_E C_{En}}{Q_R – C_{Rn+1}}\)

D

p = \(\frac{Q_E – C_{En}}{Q_R – C_{Rn+1}}\)

What are the basic assumptions required for obtaining analytical solution for the process of extraction based on the staged counter current?

A

Equilibrium at all stages, Negligible entrainment of other phases, Same equilibrium for all stages

B

Same equilibrium for all stages, Negligible entrainment of other phases, K is independent of concentration of solute

C

K is independent of concentration of solute, Same equilibrium for all stages, Equilibrium at all stages

D

Negligible entrainment of other phases, Same equilibrium for all stages, K is independent of concentration of solute

The efficiency of Brayton cycle can be increased by using staged heat supply or by use of staged compression with intercooling.

A

true

B

false

Which of the following statements regarding binary counters are correct? (a) Clock inputs of all the flip - flops of a synchronous counter are applied from the same source whereas those in an asynchronous counter are from different sources. (b) The asynchronous counter has ripple effects whereas the synchronous counter does not. (c) Only J-K flip-flops can be used in synchronous counters whereas asynchronous counters can be designed with any kind of flip flops. (d) Latches can be used for designing asynchronous counters. Code :

A

(a), (b) and (d) only

B

(a), (b) and (c) only

C

(b) and (d) only

D

(a), (c) and (d) only

What will be the extraction factor of the process of extraction for the first stage of the extraction under the staged counter current process of extraction?

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