Engineering Questions with Answers - Multiple Choice Questions

# Distillation Design MCQ’s – Analysis of Existing Columns with Brinkley Method

1 - Question

Brinkley Method can be used for,
i) Distillation
ii) Leaching
iii) Absorption
a) True
b) False

Explanation: This method is suitable for all the three operations, distillation for two components or more, leaching based on extraction purpose and similarly absorption for interfacial balance.

2 - Question

The hi is defined as the
a) Correlating factor
b) Correction Factor
c) Striping Factor
d) Relating Factor

Explanation: The correlating factor is defines as by hi, while L/V is defined as the stripping factor of systems.

3 - Question

The Smith-Brinkley (SB) method, is based on an analytical solution of the
a) Infinite-difference equations
b) Differential Equations
c) Integration
d) Finite-difference equations

Explanation: The Smith-Brinkley (SB) method, is based on an analytical solution of the finite-difference equations that can be written for staged separation processes.

4 - Question

The Smith-Brinkley (SB) method, rates a column on basis of
a) Initial sequence of the stages
b) Reverse sequence of its stages
c) Forward sequence of its stages
d) Straight Sequence

Explanation: The Smith-Brinkley (SB) method rates a column on basis of Reverse sequence of its stages, so to obtain top to bottom approach.

5 - Question

For a change in temperature ______ is added to tn.
a) Half
b) One fourth
c) Two third
d) Square

Explanation: For a change in temperature half is added to tn and half to tm, this acts as an average value between them¬ provides accuracy.

6 - Question

Smith Brinkley method is valuable for
a) Off-line optimization
b) Reflux optimization
c) On-line optimization
d) In-line optimization

Explanation: Smith Brinkley method is valuable for On-line optimization, while NR for the reflux Reflux optimization.

7 - Question

If the feed temperature is 211oK and Dew point is 70oF, then tn is
a) 68oF
b) 178oF
c) 140.5oF
d) 259.5oF

Explanation: As tn= (70+211)/2 = 140.5oF.

8 - Question

If the feed temperature is 2110K and Bubble point is 70oF, then tm is
a) 68oF
b) 178oF
c) 140.5oF
d) 259.5oF

Explanation: As tM= (308+211)/2 = 259.5oF.

9 - Question

Ki are determined at the
a) Top section Temperatures
b) Bottom section Temperatures
c) Middle section Temperatures
d) Right section Temperatures

Explanation: Ki are determined at the Top section Temperatures, and the pressure are determined at the left and right of column respectively.

10 - Question

K’I are determined at
a) Top section Temperatures
b) Bottom section Temperatures
c) Middle section Temperatures
d) Right section Temperatures