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.

151.

The angle between a head regulator and entrance of water, for smooth entry of water in a canal is kept as _________________?

A. 90°
B. 100°
C. 110°
D. 120°
Answer» D. 120°
152.

The _________ analysis of earth dam foundation against shear must be carried out when the foundation is kept on fine loose cohesion less material?

A. Stability
B. Suitability
C. Overturning
D. Failure
Answer» B. Suitability
153.

The amount of moisture content present in the air, when it is expressed as weight per unit volume is called ________________?

A. Humidity
B. Absolute Humidity
C. relative humidity
D. All are correct
Answer» C. relative humidity
154.

The aeration of water is done to remove _________________?

A. Odour
B. Smell
C. Colour
D. Taste
Answer» D. Taste
155.

Readily available moisture is the % of moisture that is always easily available to plant and this moisture is called _________________?

A. 70%
B. 75%
C. 80%
D. 85%
Answer» D. 85%
156.

Rabi crops pertains to ___________________?

A. Throughout the year
B. Summer season
C. Monsoon season
D. Winter season
Answer» E.
157.

Presently percentage of area irrigation to that of total cultivated area in our country is __________________?

A. 80%
B. 60%
C. 40%
D. 27%
Answer» E.
158.

Pilot tube is a device, which convert velocity head of flowing water into pressure by ____________________?

A. H = v2/2g
B. H = v/g
C. H = v2 / g2
D. H = v2 / g
Answer» B. H = v/g
159.

Piezometer tube is open to both ends mostly used to measure ____________________?

A. Atmospheric pressure
B. gauge pressure
C. Vacuum pressure
D. absolute pressure
Answer» C. Vacuum pressure
160.

Permissible velocity of water flowing through concrete lined tunnel is usually __________________?

A. 3 – 4m/sec
B. 4 – 5m/sec
C. 5 – 6m/sec
D. 6 – 7m/sec
Answer» C. 5 – 6m/sec
161.

Out/ of a well water is more than canal water because____________________?

A. Conveyance losses in well irrigation are less
B. Well water is clear than canal water
C. Lifting of water increase cost of well water
D. Well water is used economically
Answer» B. Well water is clear than canal water
162.

Onion is a ___________ rooted crop?

A. Shallow
B. Deep
C. Non-rooted
D. Spread
Answer» B. Deep
163.

On relative basis, when one soil is eroded as compared to other soil under same conditions, this property is called __________________?

A. Compact ability
B. Erodibility
C. Viscosity
D. All are correct
Answer» C. Viscosity
164.

__________% of total global water is saline and available in oceans ?

A. 95%
B. 96%
C. 97%
D. 97.5%
Answer» E.
165.

_________% of total global water is fresh and its major portion is obtained from Rains ?

A. 2%
B. 2.5%
C. 3%
D. 3.2%
Answer» C. 3%
166.

Now- a -days the hydraulic structures are designed. Keeping in view the flow net, this was given by __________________?

A. Blight
B. Khosla
C. Lane
D. Darcy
Answer» C. Lane
167.

Net irrigation + field irrigation losses are the requirement of _____________________?

A. Full irrigation
B. Field irrigation
C. Furrow irrigation
D. Basin irrigation
Answer» C. Furrow irrigation
168.

Mostly the salt of calcium and Magnesium can not cause ________________?

A. Salinity
B. Alkalinity
C. Poisoning
D. Turbidity
Answer» D. Turbidity
169.

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

A. Stable
B. Rocky
C. Impermeable
D. Permeable
Answer» E.
170.

Mercury does not wet the glass because of its property of ______________________?

A. Capillary
B. Surface tension
C. Compressibility
D. Viscosity
Answer» C. Compressibility
171.

Mean velocity of flow in a river can be directly measured by means of ______________________?

A. Dickne’s formula
B. Current meter
C. Surface floats
D. Rod floats
Answer» E.
172.

Land containing high percentage of alkalies may be reclaimed by addition of_____________________?

A. Caso4
B. Gypsum
C. Chemicals
D. Caco3
Answer» B. Gypsum
173.

Khosla provided a seepage theory for design of Hydraulic structures called________________?

A. Theory of seepage
B. Method of independent variables
C. Method of cutoffs
D. Creep theory
Answer» C. Method of cutoffs
174.

It is important to keep the saturation gradient line within the body of a embankment of canal, the saturation gradient line in loomy soils lie at___________________?

A. 1:2 to 1:4
B. 1:3 to 1:5
C. 1:4 to 1:6
D. 1:5 to 1:7
Answer» D. 1:5 to 1:7
175.

Infiltration capacity curve is the graphical representation, as to how the infiltration capacity varies with time after rainfall this curve was represented by ____________________?

A. Darcy
B. Horton
C. Lacy
D. Kennedy
Answer» C. Lacy
176.

In the initial stage of rainfall, when soil moisture available in the root zone is very low, the rate of infiltration ?

A. Increases
B. Reduces
C. remain stagnant
D. Normal
Answer» B. Reduces
177.

In study of a granular material sliding on plane ground, the angle between the perpendicular and the surface in static condition is called ___________________?

A. Angle of friction
B. Angle of internal friction
C. Angle of repose
D. All are correct
Answer» B. Angle of internal friction
178.

In ogee spillway the discharge is directly proportional to _______________________?

A. H1/2
B. H1/3
C. H3/2
D. H1/4
Answer» D. H1/4
179.

in most economical Trapezoidal section, half of the Top width is equal to _________________?

A. Bottom width of channel
B. Depth of channel
C. Sloping side of channel
D. None of these
Answer» D. None of these
180.

In high floods, to avoid spilling of flood water over the gates, a wall is provided from pond level to high Flood level. This wall spans for the entire length of regulator, rest on piers, sustain water pressure by its weight called_____________________?

A. Retaining wall
B. Divide wall
C. Breast wall
D. Cantilever wall
Answer» D. Cantilever wall
181.

In case of silt deposition in the dam reservoir to dispose of the effectively ________________ be used?

A. Vortex pipes
B. Silt excluders
C. Silt ejectors
D. All are correct
Answer» B. Silt excluders
182.

In alluvial river due to the action of centrifugal force, bends are developed by scouring on concave and silting on convex _____________________?

A. Silting & scouring
B. Meandering
C. Aggrading
D. Degrading
Answer» C. Aggrading
183.

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

A. Flashy
B. Virgin
C. Tidal
D. Deltaic
Answer» C. Tidal
184.

If the weir flood is designed continuous with divide piers as reinforced structure,such that the weight of divide piers, keep the structure safe against uplift, is called__________________?

A. Non-gravity weir
B. Gravity weir
C. Sharp crested weir
D. Rectangular weir
Answer» B. Gravity weir
185.

If the duration of a unit hydrograph approaches zero, the resulting unit hydrograph is called __________________?

A. Instantaneous unit hydrograph
B. Intensity unit hydrograph
C. Unit hydrograph
D. Unit hyetgoraph
Answer» B. Intensity unit hydrograph
186.

if the depth of water in an open channel is greater than the critical depth, the flow is called________________?

A. Critical depth
B. Non-critical flow
C. Sub-critical flow
D. Shooting flow
Answer» D. Shooting flow
187.

If in a river the flood rises and falls suddenly due to storm rain, then such river is called __________________?

A. Virgin
B. Tidal
C. Flashy
D. Deltaic
Answer» D. Deltaic
188.

If E1 is the energy before the hydraulic jump and E2 is the energy after the hydraulic jump the efficiency of jump is then given by _____________________?

A. E2 – E1
B. E2 / E1
C. E1 – E2
D. E1 / E2
Answer» C. E1 – E2
189.

If a river or stream is collecting sediment and is building up dunes in its bed is called ______________________?

A. Stable river
B. Sub-stable river
C. Aggrading river
D. Sediment river
Answer» D. Sediment river
190.

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?

A. Develop
B. Manage
C. Remodel
D. Rehabilitate
Answer» C. Remodel
191.

Hydraulic structures are designed for a safe flow of flood. The floods which are equal in designed magnitude life of the project is called _____________________?

A. High floods
B. Ordinary floods
C. Low floods
D. Probable flood
Answer» E.
192.

hail is precipitation in the form of balls or lumps of ice of size greater than _______________ formed by alternate freezing & melting?

A. 5 mm diameter
B. 10 mm diameter
C. 15 mm diameter
D. 20 mm diameter
Answer» B. 10 mm diameter
193.

Ground water moving down wards in the un-saturated ground above the water table is called___________________?

A. Hygroscopic water
B. Capillary water
C. Gravity water
D. All are correct
Answer» D. All are correct
194.

generally useful life of a reservoir is considered terminated when its -gross storage is reduced by _______________ of the design capacity of the reservoir?

A. 100%
B. 80%
C. 50%
D. 20%
Answer» C. 50%
195.

From a water fall, if water is falling down at the rate of 100 N/sec: on the blades of a turbine when the height of fall is 100 m the power delivered to turbine will be______________?

A. 1000 kw
B. 10,000 kw
C. 100 kw
D. 5000 kw
Answer» C. 100 kw
196.

Friction head loss in open channels is determined by_________________?

A. Chezy’s formula
B. Darcy weisbach equation
C. Kutter’s formula
D. Pilot tube
Answer» C. Kutter’s formula
197.

For strong Hydraulic jump containing maximum energy, the down stream glacis should be sloped at a slope of ______________ to dissipate max: energy?

A. 2:1 to 2.5:1
B. 2.5:1 to 3:1
C. 3:1 to 5:1
D. 5:1 to 6
Answer» D. 5:1 to 6
198.

For an economical design of gravity dam, the shear friction factor causec compression strength should lie between____________________?

A. 1.5 to 4.0
B. 2.0 to 4.0
C. 2.5 to 4.5
D. 3 to 5
Answer» B. 2.0 to 4.0
199.

For a perfect incompressible liquid flowing in a continuous stream, the total energy of a particle remain the same, while the liquid particle move from one point to another this statement is called ___________________?

A. Continuity Equation
B. Pascal s law
C. Bernoulli equation
D. Archimede’s principle
Answer» D. Archimede’s principle
200.

For a flood control reservoirs, the effective storage is equal to ___________________?

A. Useful storage – valley storage
B. Useful storage + surcharge storage
C. Useful storage + surcharge storage
D. Useful storage + surcharge storage -valley storage
Answer» E.