Explore topic-wise MCQs in Agriculture .

This section includes 276 Mcqs, each offering curated multiple-choice questions to sharpen your Agriculture knowledge and support exam preparation. Choose a topic below to get started.

1.

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

A. 30% water available
B. 25% water available
C. 20% water available
D. All are correct
Answer» D. All are correct
2.

Which of the following is a cash crop ___________________?

A. Maize
B. Paddy
C. Cotton
D. Wheat
Answer» D. Wheat
3.

Which of the following has highest-coefficient of discharge_____________________?

A. Sharp edged orifice
B. Venturi meter
C. Broad crested weir
D. Cippoletti weir
Answer» C. Broad crested weir
4.

When the weight of weir balances the up lift pressure caused by the head of the water seeping below the weir bed is called ___________________?

A. Cippollite weir
B. Broad crested weir
C. Gravity weir
D. Non-gravity weir
Answer» D. Non-gravity weir
5.

When the reservoir is full, the maximum compressive force in a gravity dam is produced ___________________?

A. At the toe
B. At the heel
C. Within the middle third of base
D. At centre of base
Answer» B. At the heel
6.

When the rate of change of discharge of outlet equals the rate of change of discharge of the channel, the out let is called __________________?

A. Sensitive
B. Flexible
C. Proportional
D. Non-flexible
Answer» D. Non-flexible
7.

When the high flood level of the drain is sufficiently below the bed of the Canal that the drainage water flows freely under gravity, such structure is called___________________?

A. Aqueduct
B. Syphon-aqueduct
C. Cross-Drainage
D. Non-gravity structure
Answer» B. Syphon-aqueduct
8.

When the fluid properties do not change with time, it is a ___________ flow?

A. Steady
B. Uniform
C. Unsteady
D. Non-Uniform
Answer» B. Uniform
9.

When the air in a atmosphere is fully saturated with the vapours present in it, then the pressure exerted by such wet air mass will be called ____________________?

A. Vapour pressure
B. Saturation pressure
C. Partial pressure
D. Atmospheric pressure
Answer» C. Partial pressure
10.

When seepage water after passing the ground water aquifer joins the surface stream, such stream will be called_____________________?

A. Influent stream
B. Effluent stream
C. Rain stream
D. Storm stream
Answer» B. Effluent stream
11.

When reservoir is full on upstream side, the maximum stress comes upon__________________?

A. Top of dam
B. Bottom of dam
C. Face of dam
D. All are correct
Answer» C. Face of dam
12.

When high flood passing down weir creating high up lift pressures and there is no flow in the canals, if such condition is taken for design and is called__________________?

A. High flood level
B. Dangerous condition
C. Hydraulic design condition
D. Worst condition
Answer» E.
13.

When FSL of the canal is sufficiently above the bed level of drainage so that canal flows under syphonis action, the structure is called _____________________?

A. Super passage
B. Syphon – Aqueduct
C. Canal-syphon
D. Aqueduct
Answer» D. Aqueduct
14.

When FSL of the canal is sufficiently below the bottom of the drain, so that water flows freely under gravity, such structures is called_____________________?

A. Syphon
B. Syphon – Aqueduct
C. Super-passage
D. Canal-syphon
Answer» D. Canal-syphon
15.

when ever a sloping face of river bank is protected by stone pitching against scour, the pitching is extended beyond the toe to the river side that is called__________________?

A. Toe wall
B. Launching apron
C. Protective wall
D. Guide bank
Answer» C. Protective wall
16.

When ever a body is immersed wholly or partially in water, it is lifted up by a force equal to the weight of water displaced by the body ?

A. Archimed’s Principle
B. Law of gravity
C. Newton’s law of otion
D. None of these
Answer» B. Law of gravity
17.

When a weir is constructed, the downstream .bed of the river goes on eroding and consequently causes progressive lowering of the bed on downstream of weir called__________________?

A. Retrogression
B. Lowering down of bed
C. Ponding on down stream
D. All are correct
Answer» B. Lowering down of bed
18.

Weep holes are provided in canal lining to _____________________?

A. improve strength of lining
B. Give additional anchorage against sliding
C. Provide water into branch canals
D. Have drainage facility
Answer» E.
19.

Water storage efficiency in the root zone depends upon__________________?

A. Porosity
B. Fine particles of soil
C. Coarse particles of soil
D. Climatic conditions
Answer» B. Fine particles of soil
20.

Water logging caused by ____________ water, which during excessive irrigation percolates down and join under ground water table?

A. Capillary
B. Hygroscopic
C. Gravity
D. Free
Answer» D. Free
21.

Water logging is the state of the soil where the water table brought ______________capacity or root zone of plants?

A. Far from
B. Within
C. Below
D. Near
Answer» C. Below
22.

Water logging and soil salinization is a twin menace which has effected the agriculture sector severely, about _______________ hectares of land are wasted yearly?

A. 30,000
B. 35,000
C. 40,000
D. 45,000
Answer» D. 45,000
23.

Water available above the top of root zone of plants is about 15% of soil moisture contents, is mostly not available to plants celled_________________?

A. Capillary water
B. Irrigation water
C. Effective water
D. Hygroscopic water
Answer» E.
24.

Water application efficiency increases if the plot to be irrigated is__________________?

A. Circular
B. Square
C. Rectangle
D. All are correct
Answer» D. All are correct
25.

Water available in root zone of plants, is about 50% of soil moisture content. which is always available to the plants is called________________?

A. Effective water
B. Soil-moisture content
C. Capillary water
D. All are correct
Answer» D. All are correct
26.

Volume of water that unit volume of aquifer will give up by gravity pull is called ____________________?

A. Specific volume
B. Specific yield
C. Specific retention
D. All are correct
Answer» C. Specific retention
27.

velocity of gases is measured with a _____________________?

A. Hot wire manometer
B. Hot wire anemometer
C. Barometer
D. All are correct
Answer» C. Barometer
28.

Velocity of flow in a sewer must be form ______________ to ?

A. 1 m / sec to 3m/ sec
B. 3m / sec to 4m/ sec
C. 4m / sec to 4.5 ml sec
D. 4.5 ml sec to 5 m/ sec
Answer» B. 3m / sec to 4m/ sec
29.

Total energy line (T.E.L) represents the sum of ________________________?

A. Pressure head + kinetic head and datum head
B. Velocity head + kinetic head + datum head
C. Velocity head + potential head + datum head
D. The energy head + potential head + datum head
Answer» B. Velocity head + kinetic head + datum head
30.

Torsional force does not act on ____________________?

A. Steel
B. Liquids
C. Soil
D. Wood
Answer» C. Soil
31.

To protect the face of embankment against the attack of wave wash with stone boulders is called _________________?

A. Pitching
B. Armouring
C. Revetment
D. All are correct
Answer» B. Armouring
32.

To pack with clay material generally for the purpose of checking leakage of water is called __________________?

A. Pug
B. Cohesive
C. Seal
D. Repair
Answer» B. Cohesive
33.

To keep the Hydraulic structure safe against undermining the ________________ should be safe?

A. Exit gradient
B. Hydraulic gradient
C. Creep length
D. Critical exit gradient
Answer» B. Hydraulic gradient
34.

To dispose of the surplus water from dam, a water way is constructed called________________?

A. Water escape
B. Spillway
C. Channel
D. All are correct
Answer» C. Channel
35.

To be more close to the actual field conditions, some times artificial rain tests conducted, the instrument used is called ___________________?

A. Infiltrometer
B. I.C. curve
C. Rain simulator
D. v Hydrometer
Answer» D. v Hydrometer
36.

To avoid scouring from end of structure, it is necessary to provide a ________________ at the exit point?

A. Vertical cutoff
B. Stone apron
C. Stone boom
D. Stone blocks
Answer» B. Stone apron
37.

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

A. Leguminous crops
B. Cash crops
C. Fodder
D. Food crops
Answer» B. Cash crops
38.

Theoretical velocity of the jet at Vena Contracta is determined by ________________?

A. (2 gh)1/2
B. 2(gh)1/2
C. 2g (h)1/2
D. 2gh
Answer» B. 2(gh)1/2
39.

The weight per unit of liquid at standard Temperature and pressure is called___________________?

A. Specific weight
B. Mass weight
C. Mass density
D. Capillary rise is significant
Answer» B. Mass weight
40.

The water way from a weir is determined by using Lacey’s wetted perimeter i.e. P=_______(Q)1/2 ?

A. 3.50
B. 3.75
C. 4.75
D. 5.75
Answer» D. 5.75
41.

The water vapours are generally present in a atmosphere, some times isolated and sometimes mixed with other gases. in such a situation the pressure exerted by each component of mixture, will be called ______________________?

A. Partial pressure
B. Saturation pressure
C. Vapour pressure
D. All are correct
Answer» B. Saturation pressure
42.

The water particles held in soil pores of root zone by _____________ against gravity and is known as capillary water?

A. Cohesive force
B. Capillary force
C. Tension force
D. Gravity force
Answer» C. Tension force
43.

The water evaporates from paddy surfaces to the atmosphere in the form of water vapours, these water vapours get collected in the atmosphere and behave & like_________________?

A. Water
B. Snow
C. Ice particles
D. Gas
Answer» E.
44.

The water level required on the upstream side of a canal head regulator, so as to feed the off-taking canal with its full supply is called_________________?

A. HFL
B. FSL
C. Pond level
D. Canal level
Answer» D. Canal level
45.

The water in swimming pools can be ____________ by using any one from the following, chlorine-ultraviolet rays and bromine t ?

A. Disinfected
B. Infected
C. Cleaned
D. Iodized
Answer» B. Infected
46.

The water force per meter length on a vertical wall is equal to_________________?

A. w H
B. W.H/2
C. WH2 2
D. wh2
Answer» D. wh2
47.

The wall of masonry or concrete, constructed at 90° to the axis of weir to separate normal weir from under sluices is called____________________?

A. Divide wall
B. Retaining wall
C. Toe wall
D. All are correct
Answer» B. Retaining wall
48.

The velocity in a large canal or channel measured at a depth of ___________________ gives the mean velocity using the current meter?

A. 0.6m
B. 0.5m
C. 0.6 depth
D. 0.5 depth
Answer» D. 0.5 depth
49.

The various works constructed on river side to control the flow and pass it safely from hydraulic structures are called ___________________?

A. River controlling works
B. River Training works
C. Marginal Embankment
D. Guide Banks
Answer» C. Marginal Embankment
50.

The value of coefficient of discharge in comparison to cofficient of velocity is found to be ____________________?

A. Lesser
B. More
C. Equal
D. Zero
Answer» B. More