# Separation Processes Questions and Answers – Newton-Raphson Method

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This set of Separation Processes Multiple Choice Questions & Answers (MCQs) focuses on “Newton-Raphson Method”.

1. The Newton-Raphson method of finding roots of nonlinear equations falls under the category of which method?
a) Bracketing
b) Random
c) Open
d) Graphical

Explanation: It is an open method since we have to guess the square root.

2. What is the formula of finding the square root of R from equation x2- R=0?
a) Xi+1= 0.5(xi + R/xi)
b) Xi+1= 0.5(xi + R/2)
c) Xi= 0.5(xi + R/xi)
d) Xi+1= 0.5(xi + xi)

Explanation: The formula of finding the square root of R from equation x2– R=0 is Xi+1= 0.5(xi + R/xi).

3. If broth flow rate is 200kg/hr and solvent flow rate is 300kg/hr and POD is of diameter 1m and length 10m, what is the residence time?
a) 28s
b) 56s
c) 35s
d) 39s

Explanation: ttme= pi*(D2/4)L/F+S, ttime = 3.14*(1/4)10/500=56s.
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4. If broth flow rate is 600kg/hr and solvent flow rate is 400kg/hr and POD is of diameter 1m and length 5m, what is the residence time?
a) 28s
b) 14s
c) 30s
d) 35s

Explanation: ttme= pi*(D2/4)L/F+S, ttime = 3.14*(1/4)5/1000=14s.

5. If broth flow rate is 200kg/hr and solvent flow rate is 300kg/hr and POD is of diameter 1m and length 15m, what is the residence time?
a) 72s
b) 76s
c) 82s
d) 85s

Explanation: ttme= pi*(D2/4)L/F+S, ttime = 3.14*(1/4)15/500=85s.

6. If broth flow rate is 200kg/hr and solvent flow rate is 300kg/hr and POD is of diameter 2m and length 5m, what is the residence time?
a) 98s
b) 111ss
c) 113s
d) 119s

Explanation: ttme= pi*(D2/4)L/F+S, ttime = 3.14*(4/4)5/500=113s.

7. If broth flow rate is 200kg/hr and solvent flow rate is 300kg/hr and POD is of diameter 1m and length 6m, what is the residence time?
a) 28s
b) 20s
c) 30s
d) 34s

Explanation: ttme= pi*(D2/4)L/F+S, ttime = 3.14*(1/4)6/500=34s.

8. If broth flow rate is 200kg/hr and solvent flow rate is 300kg/hr and POD is of diameter 1m and length 7m, what is the residence time?
a) 28s
b) 20s
c) 40s
d) 35s

Explanation: ttme= pi*(D2/4)L/F+S, ttime = 3.14*(1/4)7/500=40s.

9. If broth flow rate is 200kg/hr and solvent flow rate is 300kg/hr and POD is of diameter 3m and length 5m, what is the residence time?
a) 200s
b) 250s
c) 230s
d) 254s

Explanation: ttme= pi*(D2/4)L/F+S, ttime = 3.14*(9/4)5/500=254s.

10. If broth flow rate is 200kg/hr and solvent flow rate is 500kg/hr and POD is of diameter 1m and length 5m, what is the residence time?
a) 28s
b) 20s
c) 30s
d) 35s

Explanation: ttme= pi*(D2/4)L/F+S, ttime = 3.14*(1/4)5/700=20s.

Sanfoundry Global Education & Learning Series – Separation Processes.

To practice all areas of Separation Processes, here is complete set of 1000+ Multiple Choice Questions and Answers. 