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61
The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the
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Answer: Option B
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62
1.2 to 3.8 cms is the value of the
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Answer: Option D
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63
Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is
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Answer: Option B
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64
Larger depth of liquid on the trays of a distillation column
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Answer: Option C
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65
In a shell and tube heat exchanger, the 'tube pitch' is defined as the
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Answer: Option C
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66
For pipe flows, head is proportional to __________ at constant capacity (where D = pipe diameter).
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Answer: Option C
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67
Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from
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Answer: Option A
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68
Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.
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Answer: Option B
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69
Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to
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Answer: Option A
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70
The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from
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Answer: Option C
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