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61
The aqueduct or superpassage type of works are generally used when
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Answer: Option A
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62
The most suitable chemical which can be applied to the water surface for reducing evaporation is
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Answer: Option C
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63
According to Lacey, depth of scour in a river depends upon the straightness of the reach. If D is the depth of scour in regime flow in a right angled bend, it is
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Answer: Option D
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64
The best unit duration of storm for a unit hydrograph is
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Answer: Option B
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65
S-hydrograph is used to obtain unit hydrograph of
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Answer: Option C
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66
Regime conditions in a channel may occur if
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Answer: Option D
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67
The ratio of the rate of change of discharge of an outlet and parent channel, is known as
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Answer: Option C
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68
Dimensions of coefficient of transmissibility are
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Answer: Option C
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69
According to Khosla’s theory, the exit gradient in the absence of a downstream cutoff is
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Answer: Option C
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70
For cereal crops the most commonly adopted method of irrigation, is
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Answer: Option B
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