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Stoichiometry
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Question
The heat of adsorption of a gas caused by Van der Walls forces of attraction and capillarity is equal to the heat of
Options
A. normal condensation.
B. wetting.
C. sum of (a) and (b).
D. difference of (a) and (b).
Correct Answer
sum of (a) and (b).
More questions
1. Maximum consumption of polymers is in
Options
A. electrical insulation
B. toys making
C. coating and films
D. packaging
Show Answer
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Discuss
Correct Answer: coating and films
2. To resist spalling tendency, a refractory should have
Options
A. greater diffusivity.
B. low specific heat.
C. low thermal co-efficient of expansion.
D. all (a), (b) and (c).
Show Answer
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Correct Answer: all (a), (b) and (c).
3. Thermosetting materials
Options
A. are cross-linked molecules.
B. soften on application of heat.
C. are solvent soluble.
D. none of these.
Show Answer
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Correct Answer: are cross-linked molecules.
4. Laboratory gas is obtained by the cracking of
Options
A. gasoline
B. diesel
C. fuel oil
D. kerosene
Show Answer
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Correct Answer: kerosene
5. Percentage of drum submerged in the slurry in case of rotary drum filter is
Options
A. 3
B. 30
C. 85
D. 25
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Correct Answer: 30
6. Which of the following variables does not affect the furnace capacity?
Options
A. Size of the furnace.
B. Gas velocity in furnace.
C. Ratio of wall surface to surface of stock.
D. None of these.
Show Answer
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Correct Answer: None of these.
7. Main constituent of natural gas is
Options
A. CH
4
B. C
2
H
2
C. C
2
H
4
D. C
2
H
6
Show Answer
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Correct Answer: CH
4
8. Fusion point of a basic refractory material is
Options
A. reduced by the addition of acid oxides.
B. increased by the addition of acid oxides.
C. not affected by the addition of acid oxides.
D. always less than 1000°C.
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Correct Answer: reduced by the addition of acid oxides.
9. 80% less than 200 mesh size particles are called
Options
A. smoke
B. powder
C. grit
D. aggregates
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Correct Answer: powder
10. The minimum tray spacing in distillation column of diameter less than 3 ft is normally __________ inches.
Options
A. 6
B. 18
C. 24
D. 34
Show Answer
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Correct Answer: 6
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