agriculture MCQs – Page 208

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

4141. In a river the flood water dries up before it joins the sea or any other river, such river is called ________________?
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A. Tidal

B. Flashy

C. Deltaic

D. Virgin
4142. Friction head loss in open channels is determined by_________________?
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A. Pilot tube

B. Chezys formula

C. Darcy weisbach equation

D. Kutters formula

4143. Wilting point is that limit after that the crop starts feeding up and no water is available for plant, this point occurs after _________________?
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A. 25% water available

B. 30% water available

C. All are correct

D. 20% water available
4144. That rain fall which is effectively consumed by the plants to meet its consumptive needs is called__________________?
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A. Total rainfall

B. Effective rain fall

C. Monsoon rainfall

D. All are correct

4145. The most economical central angle of an arch dam is made at ___________________?
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A. 143

B. 133!

C. 123

D. 153

4146. A flow in which the quantity of liquid flowing per second is constant is called___________________?
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A. Turbulent flow

B. Steady flow

C. None of these

D. Uniform flow

4147. The ratio of the rate of change of discharge through out let to the rate of c./v of water level of the distributary is called_________________?
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A. Flexibility

B. Setting

C. Proportionally

D. Sensitivity
4148. The depth before the jump is always less then the depth after the jump. The depth before the jump is called initial depth and depth after the jump is called_______________?
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A. Sequent depth

B. Final depth

C. Afflux

D. Down stream water depth

4149. Those crops which increase the nitrogen content of the soil and hence the fertility also are called ___________________?
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A. Cash crops

B. Food crops

C. Leguminous crops

D. Fodder

4150. Presently percentage of area irrigation to that of total cultivated area in our country is __________________?
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A. 40%

B. 27%

C. 60%

D. 80%

4151. Mostly the hydraulic structures founded on ____________ soils fails because of undermining and uplift pressure?
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A. Permeable

B. Stable

C. Rocky

D. Impermeable

4152. The discharge through a rectangular channel will be maximum. if its depth is_______________?
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A. Half of its width

B. Equal to its width

C. Twice the width

D. one-third of its with

4153. The hydraulic mean depth for a circular pipe of diameter d is ____________________?
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A. d/4

B. d/3

C. d/2

D. d/6

4154. Mean velocity of flow in a river can be directly measured by means of ______________________?
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A. Surface floats

B. Rod floats

C. Dicknes formula

D. Current meter

4155. The piles driven in low bearing capacity soil which does not rest on hard rock but bears the coming load due to side resistance is called ________________?
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A. Load Bearing

B. Frictional pile

C. Cost-in situ piles

D. All are correct

4156. A well penetrated in ground water confined between impervious layer at its top and bottom is called __________________?
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A. Perched

B. Non-artesian

C. Artesian well

D. Un-confined

4157. The science of water which deals with the depletion and replenishment of water resources is called_________________?
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A. Biology

B. Histology

C. Hydrography

D. Hydrology
4158. generally useful life of a reservoir is considered terminated when its -gross storage is reduced by _______________ of the design capacity of the reservoir?
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A. 80%

B. 100%

C. 50% l

D. 20%

4159. Hydrology is the science which deals with the depletion and recharge of water resources yearly therefore. its knowledge is a must to _________________ properly the water resources?
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A. Develop

B. Remodel

C. Manage

D. Rehabilitate

4160. The level above the or below the sea level which is also called zero level or datum is called ___________________?
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A. Positive level

B. Negative level

C. Soil level

D. Reduce level