Engineering :: Heat Transfer
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181. |
For handling severely scaling liquids which of the following evaporator will be preferred? |
A. |
Horizontal tube type |
B. |
Long vertical tube type |
C. |
Agitated film type |
D. |
Short vertical tube |
E. |
None of the above |
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Answer: Option A
Explanation:
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182. |
The rate of energy stored in the wall will be |
A. |
50 kcal/min |
B. |
50 kcal/sec |
C. |
50 kcal/hr |
D. |
200 kcal/hr |
E. |
200 kcal/min |
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Answer: Option E
Explanation:
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183. |
The range of diffusivity of gases in cm2/sec at atmospheric pressure is |
A. |
Less than 1 |
B. |
1 |
C. |
5 to 1 |
D. |
10 to 5 |
E. |
More than 10 |
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Answer: Option A
Explanation:
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184. |
Which of the following is a minimum boiling azeotrope? |
A. |
Iso-butanol-water |
B. |
Molasses-water |
C. |
Carbon disulphide-acetone |
D. |
Acetone-chloroform |
E. |
Benzene-toluene |
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Answer: Option C
Explanation:
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185. |
Which of the following is used as entrainer in acetic acid - water separation? |
A. |
Methyl alcohol |
B. |
Hexane |
C. |
Phosphorous |
D. |
Butyl acetate |
E. |
Benzene. |
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Answer: Option D
Explanation:
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186. |
Which of the following provides maximum contact surface for a liquid vapour system? |
A. |
Bubble cap tower |
B. |
Packed tower |
C. |
Sieve plant column |
D. |
Wetted wall column |
Answer: Option D
Explanation:
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187. |
Diffusion coefficient of water into air at 26?C is nearly |
A. |
0.026 cm2/s |
B. |
0.26 cm2/s |
C. |
2.6 cm2/s |
D. |
5.2 cm2/s |
E. |
2.6 cm2/sec |
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Answer: Option B
Explanation:
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188. |
DBA = DAB, in case of |
A. |
Stagnet diffusion |
B. |
Equimolar counter diffusion |
C. |
Either of (A) and (B) above |
D. |
None of the above |
Answer: Option B
Explanation:
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189. |
The process of separation of solutes of different molecular sizes in a liquid solution by use of a sutable membrane is known as |
A. |
Hyper sorption |
B. |
Distillation |
C. |
Adsorption |
D. |
Leaching |
E. |
Dialysis |
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Answer: Option E
Explanation:
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190. |
Which of the following is an example of absorption? |
A. |
Extraction of sugarcane juice |
B. |
Dechlorination of water |
C. |
Removal of oil from cake |
D. |
Removal of moisture from gasoline |
E. |
None of the above |
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Answer: Option D
Explanation:
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