# Distillation Design Questions and Answers – Global Newton Method

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This set of Distillation Design Multiple Choice Questions & Answers (MCQs) focuses on “Global Newton Method”.

1. Global method is also called as
a) Simultaneous regression method
b) Simultaneous rigorous method
c) Simultaneous correction method
d) Simultaneous matrix method

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.

2. In global Newton method, all equations are solved together in
a) Regula falsi technique
b) 2N technique
c) Newton Raphson technique
d) False technique

Explanation: In global Newton method, all equations are solved together in Newton Raphson technique, false technique is used in Regula falsi method.

3. In global Newton method, The K value is
a) Coupled
b) Decoupled
c) Extreme
d) Bi-lateral

Explanation: In global Newton method, The K value is decoupled, as two values can lead to different calculations and thus only an average value is chosen.
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4. Naphtali Sandholm method uses
a) MESH
b) LVF
c) RVF
d) TEMA

Explanation: Naphtali Sandholm method uses temperature and vapor from MESH, while TEMA is the standards used for the design of heat exchangers and other columns.

5. There are _______ equation in each stages.
a) C+1
b) 2C+2
c) 2C+1
d) None of the above

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.

6. There are ______ equation in whole column.
a) 2C+1
b) N (2C+1)
c) N (2C-1)
d) C-1

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.

7. The functions and variables are of size
a) N (2C+1) X N (2C+1)
b) N (2C+1) X N (2C-1)
c) N (2C+1) X N (2C)
d) N (2C+1) X N

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.

8. QC is denoted as the
a) Heat capacity
b) Heat of Condenser
c) Heat released with cooling
d) Heat Collided

Explanation: QC is denoted as the Heat of Condenser, condenser is also considered as an alternative stage in the distillation column.

9. QR is denoted as the
a) Heat of reference
b) Heat of resemblance
c) Heat of rigorous
d) Heat of Reboiler

Explanation: QR is denoted as the Heat of Reboiler, the bottom product can cause heat losses thus loosing heat can cause failure thus reboiler heat QR is necessary.

10. In Naphtali Sandholm method, Absorption factor lij is denoted as
a) AijVij
b) Aij / Vij
c) Aij + Vij
d) Vij