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Hydrology & Irrigation | MCQ – 03 | 20 MCQs

Posted on September 3, 2021March 17, 2023 By Civil Vedant

Q.1) The water utilizable by plants is available in the form of :

A) Gravity water

B) Hygroscopic water

C) Capillary water

D) Chemical water

Answer

Option (C)

Q.2) On rolling land, the method of applying water is :

A) Check flooding

B) Free flooding

C) Border flooding

D) Furrow flooding

Answer

Option (B)

Q.3) The field irrigation requirement is computed as :

A) Consumptive use + field application losses

B) Net irrigation requirement + field application losses

C) Net irrigation requirement + conveyance losses

D) Consumptive use + conveyance losses

Answer

Option (B)

Q.4) Method of applying water directly to the root zone of the plant is called –

A) Check flooding

B) Drip flooding

C) Furrow flooding

D) Sprinkler flooding

Answer

Option (B)

Q.5) Which of the following process includes spreading of an external material on the soils to increase infiltration and reduce evaporation?

A) Mulching

B) Paleo irrigation

C) Ploughing

D) Tillage

Answer

Option (A)

Q.6) As one moves from head of the canal to the field, the duty of water :

A) Decreases

B) Either increases or decreases

C) Increases

D) Remains constant

Answer

Option (C)

Q.7) Which one of the following is NOT the cause of water logging?

A) Excess tapping of the ground water

B) Frequent irrigation

C) High water table

D) Seepage from unlined canals

Answer

Option (A)

Q.8) With an increase in the supply of irrigation water, yields of the crops :

A) Decrease continuously

B) Increase continuously

C) Increase up to a certain limit and then becomes constant

D) Increase up to a certain limit and then  decreases

Answer

Option (D)

Q.9) Which one is the best method of the reclamation of the acidic soil?

A) Leaching

B) Provision of good drainage

C) Use gypsum as soil amendment

D) Use limestone as soil amendment

Answer

Option (D)

Q.10) Watering done prior to the sawing of the crops is called –

A) Kor watering

B) Duty

C) Delta

D) Paleo irrigation

Answer

Option (D)

Q.11) The upper surface of weir over which water flows, is known as :

A) Crest

B) Sill

C) Vein

D) Contracta

Answer

Option (A)

Q.12) The best alignment for a canal is when it is aligned along :

A) Valley line

B) Stream line

C) Contour line

D) Ridge line

Answer

Option (D)

Q.13) For unlined canals, the freeboard is measured from the –

A) Full supply level to the top of the bank

B) Top of the bank to bed of the canal

C) Full supply level to top of the dowel

D) None of the above

Answer

Option (A)

Q.14) The most desirable alignment of an irrigation canal is along :

A) The contour line

B) The ridge line

C) Normal to contour line

D) The valley line

Answer

Option (B)

Q.15) Canal normally used for diversion of flood water of a river is –

A) Feeder canal

B) Inundation canal

C) Ridge canal

D) Contour canal

Answer

Option (B)

Q.16) Rainfall hyetograph shows the variation of :

A) Cumulative rainfall with time

B) Rainfall intensity with time

C) Rainfall depth over an area

D) Rainfall intensity with the cumulative rainfall

Answer

Option (B)

Q.17) The area characteristics of a rain storm are represented by a –

A) DAD curve

B) Hyetograph

C) Mass curve

D) Double mass curve

Answer

Option (A)

Q.18) For construction of cement concrete dams, the maximum permissible size of the aggregates is –

A) 40 mm

B) 50 mm

C) 60 mm

D) 70 mm

Answer

Option (A)

Q.19) Berms are provided in canals if these are :

A) Fully in excavation

B) Partly in excavation and partly in embankment

C) Fully in embankment

D) All of the above

Answer

Option (A)

Q.20) Available moisture is the difference in water content of soil between field capacity and……………?

A) Gravitational water

B) Permanent wilting point

C) Saturation capacity

D) Ultimate wilting point

Answer

Option (B)

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Hydrology & Irrigation Tags:civil engineerig objective, civil engineering mcqs, civil engineering questions mcq, hydrology mcqs, hydrology objectives, irrigation mcqs, irrigation objectives

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