CSS Agriculture Questions & Answers - Part-4 - Set 38

1)   The average infiltration rate is called:

a. Infiltration capacity
b. Infiltration index
c. Both (a) and (b)
d. None of these
Answer  Explanation 

ANSWER: Infiltration index

Explanation:
No explanation is available for this question!


2)   The science which deal with the measurement of flow is known as:

a. Hydro-meteorology
b. Hydrometry
c. Hypsometry
d. None of these
Answer  Explanation 

ANSWER: Hydrometry

Explanation:
No explanation is available for this question!


3)   Which of the following instruments is connected with stream flow measurement?

a. Electro-magnetic flow meter
b. Sounding weight
c. Eco-depth recorder
d. All are correct
Answer  Explanation 

ANSWER: All are correct

Explanation:
No explanation is available for this question!


4)   The slop area method is extensively used in:

a. Case where shifting control exist
b. Case where backwater effect is present
c. Development of rating curve
d. Estimation of flood discharge based on high water mark
Answer  Explanation 

ANSWER: Estimation of flood discharge based on high water mark

Explanation:
No explanation is available for this question!


5)   A hydrograph is a plot of:

a. Stream discharge against time
b. Rainfall intensity against time
c. Cumulative runoff against time
d. Cumulative rainfall vs time
Answer  Explanation 

ANSWER: Stream discharge against time

Explanation:
No explanation is available for this question!


6)   Direct runoff is made up of:

a. Overland flow
b. Surface runoff and prompt inter flow
c. Surface runoff and infiltration
d. Rainfall and evapotranspiration
Answer  Explanation 

ANSWER: Surface runoff and prompt inter flow

Explanation:
No explanation is available for this question!


7)   Flow-duration curve is plot of:

a. Discharge versus time in chronological order
b. Stream discharge against per cen of time the flow is equaled or exceeded
c. Accumulated flow versus time
d. None of these
Answer  Explanation 

ANSWER: Stream discharge against per cen of time the flow is equaled or exceeded

Explanation:
No explanation is available for this question!


8)   Flow mass curve is a plot of:

a. Cumulative flow versus time
b. Cumulative discharge volume again t time in chronological order
c. Both (a) and (b)
d. None of these
Answer  Explanation 

ANSWER: Cumulative discharge volume again t time in chronological order

Explanation:
No explanation is available for this question!


9)   Flow mass curve is an integral curve of:

a. Flow-duration curve
b. S-curve
c. Hyetograph
d. Hydrograph
Answer  Explanation 

ANSWER: Hydrograph

Explanation:
No explanation is available for this question!


10)   A situation where more than 25% decrease in precipitation from the normal over an area is called:

a. Hydrological drought
b. Meteorological drought
c. Agricultural drought
d. None of these
Answer  Explanation 

ANSWER: Meteorological drought

Explanation:
No explanation is available for this question!


11)   When the soil moisture and rainfall are inadequate during the growing season to support healthy crop growth to maturity is called:

a. Metrological drought
b. Hydrological drought
c. Agricultural drought
d. None of these
Answer  Explanation 

ANSWER: Agricultural drought

Explanation:
No explanation is available for this question!


12)   Factor which affects the flood hydrograph, is:

a. Shape of basin
b. Size of basin
c. Slope of basin
d. All are correct
Answer  Explanation 

ANSWER: All are correct

Explanation:
No explanation is available for this question!


13)   The rising limb of a hydrograph is also known as:

a. S-curve
b. Concentration curve
c. Flow mass curve
d. Double mass curve
Answer  Explanation 

ANSWER: Concentration curve

Explanation:
No explanation is available for this question!


14)   A unit hydrograph has:

a. One unit of direct runoff
b. One unit of rainfall
c. One unit of peak discharge
d. All are correct
Answer  Explanation 

ANSWER: One unit of direct runoff

Explanation:
No explanation is available for this question!


15)   A hydrograph produced by a continuous effective rainfall at a constant rate for an infinite period is known as:

a. S-hydrograph
b. Drect run off hydrograph
c. Hyetograph
d. Double mass curve
Answer  Explanation 

ANSWER: S-hydrograph

Explanation:
No explanation is available for this question!


16)   Rational formula is only appicable to small size catchments which has an area:

a. Less than 50 km2
b. More than 50 km2
c. Less than 5000 km2
d. More than 5000 km2
Answer  Explanation 

ANSWER: Less than 50 km2

Explanation:
No explanation is available for this question!


17)   The use of unit hydrograph for estimating floods is limited to catchments of size less than:

a. 500 km2
b. 1000 km2
c. 5000 km2
d. 6000 km2
Answer  Explanation 

ANSWER: 5000 km2

Explanation:
No explanation is available for this question!


18)   The hydrological flood routing method used is:

a. Energy equation
b. Equation of motion
c. Equation of continuity
d. All are correct
Answer  Explanation 

ANSWER: Equation of continuity

Explanation:
No explanation is available for this question!


19)   The hydraulic flood routing method used is:

a. Equation of motion
b. Energy equation
c. Continuity equation
d. Both (b) & (c)
Answer  Explanation 

ANSWER: Both (b) & (c)

Explanation:
No explanation is available for this question!


20)   A geological formation which is essentially impermeable for flow of water even though it may contain water in its pores, is called :

a. Aquifuge
b. Aquiclude
c. Aquitard
d. Aquifer
Answer  Explanation 

ANSWER: Aquiclude

Explanation:
No explanation is available for this question!


21)   An aquifer confined at the bottom but not at the top is called:

a. Confined aquifer
b. Semi-confined aquifer
c. Unconfined aquifer
d. Perches aquifer
Answer  Explanation 

ANSWER: Unconfined aquifer

Explanation:
No explanation is available for this question!


22)   A geological formation through which only seepage is possible is called:

a. Aquifuge
b. Aquitard
c. Aquiclude
d. Perches aquifer
Answer  Explanation 

ANSWER: Aquitard

Explanation:
No explanation is available for this question!


23)   A geological formation which is neither porous nor permeable and there are no interconnected openings hence it cannot transmit water is called:

a. Perch aquifer
b. Aquiclude
c. Aquifuge
d. Aquitard
Answer  Explanation 

ANSWER: Aquifuge

Explanation:
No explanation is available for this question!


24)   The unit of intrinsic permeability is:

a. Cm/day
b. m/day
c. Cm2
d. Cm3
Answer  Explanation 

ANSWER: Cm2

Explanation:
No explanation is available for this question!


25)   The dimension of the coefficient of transmissibility is:

a. L3/T
b. L3T2
c. LT2
d. L/T3
Answer  Explanation 

ANSWER: L3/T

Explanation:
No explanation is available for this question!


26)   The specific storgae is:

a. Specific capacity per unit depth of aquifer
b. Same as specific yield
c. Storage coefficient
d. None of these
Answer  Explanation 

ANSWER: Storage coefficient

Explanation:
No explanation is available for this question!


27)   The discharge per unit draw down at a well is known as:

a. Specific yield
b. Specific storage
c. Specific capacity
d. None of these
Answer  Explanation 

ANSWER: Specific capacity

Explanation:
No explanation is available for this question!


28)   Spattering of small soil particles, caused by raindrop impact on wet soil is called as:

a. Inter rill erosion
b. Rill erosion
c. Chemical erosion
d. All are correct
Answer  Explanation 

ANSWER: Inter rill erosion

Explanation:
No explanation is available for this question!


29)   In splash erosion the raindrop energy acts in form of:

a. Kinetic energy
b. Potential energy
c. Chemical energy
d. None of these
Answer  Explanation 

ANSWER: Kinetic energy

Explanation:
No explanation is available for this question!


30)   Kinetic energy of raindrop depends on:

a. Terminal velocity of raindrop
b. Drop diameter
c. Rainfall intensity and time in chronological order
d. All are correct
Answer  Explanation 

ANSWER: All are correct

Explanation:
No explanation is available for this question!


31)   For attaining a raindrop to terminal velocity, the fall height should be:

a. At least 5 m
b. At least 7 m
c. Less than 7 m
d. 15 m
Answer  Explanation 

ANSWER: At least 7 m

Explanation:
No explanation is available for this question!


32)   Detached particles are transported by the mechanism of:

a. Displacement caused by physical impact
b. Entrainment caused by overland flow
c. Both (a) and (b)
d. None of these
Answer  Explanation 

ANSWER: Both (a) and (b)

Explanation:
No explanation is available for this question!


33)   Soil loss in geologic erosion is:

a. Less than accelerated erosion
b. Greater than acclerated erosion
c. Medium
d. None of these
Answer  Explanation 

ANSWER: Less than accelerated erosion

Explanation:
No explanation is available for this question!


34)   Geologic erosion is also called as:

a. Normal erosion
b. Natural erosion
c. Chemical erosion
d. Both (b) & (c)
Answer  Explanation 

ANSWER: Both (b) & (c)

Explanation:
No explanation is available for this question!


35)   Accelerated erosion is caused by:

a. Water
b. Wind
c. Both (a) and (b)
d. None of these
Answer  Explanation 

ANSWER: Both (a) and (b)

Explanation:
No explanation is available for this question!


36)   Soil erosion is a:

a. Fluvial work
b. Geomorphologic work
c. Both (a) and (b)
d. None of these
Answer  Explanation 

ANSWER: Both (a) and (b)

Explanation:
No explanation is available for this question!


37)   Soil erosion involves the detachment and transportation of:

a. Insoluble soil materials
b. Soluble soil mterials
c. Both (a) and (b)
d. None of these
Answer  Explanation 

ANSWER: Insoluble soil materials

Explanation:
No explanation is available for this question!


38)   Soil erosion refers to the gross amount of:

a. Soil loss
b. Sediment yield
c. Both (a) and (b)
d. None of these
Answer  Explanation 

ANSWER: Soil loss

Explanation:
No explanation is available for this question!


39)   Denudation rate is expressed in the unit of:

a. gram/m2
b. gm/sec
c. m3/m2/sec
d. Both (b) & (c)
Answer  Explanation 

ANSWER: Both (b) & (c)

Explanation:
No explanation is available for this question!


40)   Erosivity is the:

a. Climatic aggressiveness
b. Soil aggressiveness
c. Both (a) and (b)
d. None of these
Answer  Explanation 

ANSWER: Climatic aggressiveness

Explanation:
No explanation is available for this question!


41)   Soil erosion is more when:

a. Panly impact of raindrop
b. Raindrop impact along with overland flow
c. Only overland flow
d. All are correct
Answer  Explanation 

ANSWER: Raindrop impact along with overland flow

Explanation:
No explanation is available for this question!


42)   Slope steepness affects more to the:

a. Rill erosion
b. Splash erosion
c. Sheet erosion
d. None of these
Answer  Explanation 

ANSWER: Rill erosion

Explanation:
No explanation is available for this question!


43)   Soil Erodibility is a:

a. Dynamic process
b. Static process
c. Both (a) and (b)
d. None of these
Answer  Explanation 

ANSWER: Dynamic process

Explanation:
No explanation is available for this question!


44)   Kinetic energy of raindrop depends on:

a. Drop size
b. Terminal velocity
c. Particle size
d. Both (b) & (c)
Answer  Explanation 

ANSWER: Both (b) & (c)

Explanation:
No explanation is available for this question!


45)   The erosion caused by concentration flow in small channels or rills is called:

a. Gully erosion
b. Rill erosion
c. Torrent erosion
d. All are correct
Answer  Explanation 

ANSWER: Rill erosion

Explanation:
No explanation is available for this question!


46)   The most relevant flow to cause soil erosion is:

a. Laminar flow
b. Uniform flow
c. Turbulent flow
d. All are correct
Answer  Explanation 

ANSWER: Turbulent flow

Explanation:
No explanation is available for this question!


47)   V-shaped gullies are developed when:

a. Now velocity is high but runoff volume per unit time is less
b. Now velocity is less but runoff volume is more
c. Flow velocity is less
d. Runoff volume is more
Answer  Explanation 

ANSWER: Now velocity is high but runoff volume per unit time is less

Explanation:
No explanation is available for this question!


48)   Mass movement of soil occurs at:

a. Critical slope
b. Mild slope
c. Steep slope
d. None of these
Answer  Explanation 

ANSWER: Steep slope

Explanation:
No explanation is available for this question!


49)   Wind erosion is common in:

a. Arid zones
b. Arid and semi-arid zones
c. Humid zones
d. All are correct
Answer  Explanation 

ANSWER: Arid and semi-arid zones

Explanation:
No explanation is available for this question!


50)   Detachability of soil particle increases with:

a. Decreasing median grain size
b. Increasing medium grain size
c. Both (a) and (b)
d. None of these
Answer  Explanation 

ANSWER: Decreasing median grain size

Explanation:
No explanation is available for this question!


51)   Reliability is lower in:

a. Unstable soil
b. Stable soil
c. Both (a) and (b)
d. None of these
Answer  Explanation 

ANSWER: Stable soil

Explanation:
No explanation is available for this question!


52)   V-shsped gullies are found in

a. Hilly areas
b. Flat areas
c. Ravine areas
d. All are correct
Answer  Explanation 

ANSWER: Hilly areas

Explanation:
No explanation is available for this question!


53)   The intensity of wind erosion is affected by:

a. Wind speed
b. Soil particle size
c. Soil structure
d. All are correct
Answer  Explanation 

ANSWER: All are correct

Explanation:
No explanation is available for this question!


54)   Wind erosion is influenced by:

a. Clod size
b. Wind velocity
c. Soil moisture
d. All are correct
Answer  Explanation 

ANSWER: All are correct

Explanation:
No explanation is available for this question!


55)   Wind velocity varies with:

a. Temperature
b. Density of air
c. Viscosity of air
d. All are correct
Answer  Explanation 

ANSWER: Temperature

Explanation:
No explanation is available for this question!


56)   In wind erosion movement of particle is carried out by:

a. Saltation and surface creep
b. Suspension
c. Saltation, suspension and surface creep
d. None of these
Answer  Explanation 

ANSWER: Saltation, suspension and surface creep

Explanation:
No explanation is available for this question!


57)   Surface creep is carried out by the action of:

a. Rolling and jumping
b. Rolling or sliding
c. Both (a) and (b)
d. None of these
Answer  Explanation 

ANSWER: Rolling or sliding

Explanation:
No explanation is available for this question!


58)   Particles less than 0.1 mm diameter is moved by the action of:

a. Suspension
b. Saltation
c. Surface creep
d. None of these
Answer  Explanation 

ANSWER: Suspension

Explanation:
No explanation is available for this question!


59)   A 0.2 mm diameter particles are counted as:

a. Saltation particles
b. Particles of surface creep
c. Suspension particles
d. None of these
Answer  Explanation 

ANSWER: Saltation particles

Explanation:
No explanation is available for this question!


60)   Particles size for saltation process ranges from:

a. 0.1 to 0.5 mm diameter
b. 0.5 to 1.0 mm diameter
c. 0.1 to 0.01 mm diameter
d. None of these
Answer  Explanation 

ANSWER: 0.1 to 0.5 mm diameter

Explanation:
No explanation is available for this question!