List of top Soil Science Questions on Hydrology

The type of rainfall is called heavy, when its intensity is:
The intensity of drizzling precipitation is generally:
The intensity of rainfall for a 2-hour unit hydrograph is:
An instantaneous unit hydrograph is assumed to have the duration of rainfall occurrence as:
The instrument which is used to measure evapotranspiration in the field condition is:
A 100-hectare watershed with uniform land use has a time of concentration of 2 hours. What will be the peak runoff rate at its outlet due to a storm with uniform rainfall intensity of 6 cm/h for a fixed return period? The runoff coefficient is 0.60.
If the diameter of the well is doubled, the water yield will increase by about:
The capacity of receiving bottle of non-recording raingauge is:
The general rules applicable for locating the raingauges:
A. The opening of the raingauge should be at least 50 cm above the ground level.
B. The raingauge should be located in an open space free from obstructions.
C. The distance of the raingauge from the obstruction should be at least twice the height of the obstruction.
D. Uneven topography should be avoided.
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Transformation of rainfall at a place in a watershed into the channel flow has the following sequence:
A. Infiltration into soil
B. Depression storage
C. Occurrence of rainfall
D. Interflow
E. Surface runoff
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Which of the followings is not determined through flood routing?
The hydrologic cycle is governed by which of the following equation?
The probability of the occurrence of a rainfall event is calculated by
Write the sequence of the following type of Pan according to the value of pan coefficient in increasing order.
A. Class A Land Pan
B. ISI Pan
C. Colorado Sunken Pan
D. USGS Floating Pan
Write the sequence of following soil texture layers according to their increasing radius of influence in wells.
A. Fine to medium sand
B. Fine sand
C. Course gravel
D. Coarse sand
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In deriving the equations for confined and unconfined aquifers, which of the following assumptions are used?
A. Change in the drawdown with respect to time is negligible.
B. The well penetrates the entire aquifer.
C. The flow is vertical and uniform everywhere in the horizontal section.
D. The flow is laminar.
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The infiltration rates observed by cylinder infiltrometers are affected by:
A. Cylinder diameter
B. Thickness of cylinder
C. Metal with which a cylinder is made of
D. Cylinder installation depth
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Line up the following methods for ET\(_{0}\) estimation according to year of development, earliest to latest.
A. Blaney and Criddle
B. Radiation
C. Penman-Monteith
D. Modified Penman
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The scientist who has developed the flour pellet method for raindrop size determination is:
Class -A USWB pan has the following specifications:
A. It has metallic sheet of 22 gauge.
B. It has a diameter of 1.2 m.
C. It is painted as green.
D. It has a depth of 25 cm.
E. It is directly placed on the ground surface.
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Match LIST I with LIST II
\[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Isohyetal method} & I. \ \text{Peak runoff rate} \\ B. \ \text{Rational method} & II. \ \text{Reingauge station} \\ C. \ \text{Point rainfall} & III. \ \text{Mean areal rainfall} \\ D. \ \text{Nash model} & IV. \ \text{Flood routing} \\ \hline \end{array} \]
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Match LIST I with LIST II
\[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Point of inflection} & I. \ \text{Rainfall factor} \\ B. \ \text{Recording raingauge} & II. \ \text{Hydrograph} \\ C. \ \text{Erosivity} & III. \ \text{Impact of falling rain drops} \\ D. \ \text{Splash erosion} & IV. \ \text{Tipping bucket} \\ \hline \end{array} \]
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Match LIST I with LIST II
\[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Artesian aquifer} & I. \ \text{Unconfined aquifer} \\ B. \ \text{Draw down curve} & II. \ \text{Confining formation} \\ C. \ \text{Well development} & III. \ \text{Cone of depression} \\ D. \ \text{Percolation well} & IV. \ \text{Compressed air} \\ \hline \end{array} \]
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Match LIST I with LIST II
\[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Splash erosion} & I. \ \text{Impact of falling rain} \\ B. \ \text{Time of concentration} & II. \ \text{Canopy of vegetation} \\ C. \ \text{Dicken's formula} & III. \ \text{Travel time to outlet} \\ D. \ \text{Interception} & IV. \ \text{Peak runoff rate} \\ \hline \end{array} \]
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Match LIST I with LIST II
\[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Cable tool drilling} & I. \ \text{No strainer} \\ B. \ \text{Well development} & II. \ \text{Bailer} \\ C. \ \text{Cavity well} & III. \ \text{Effective well diameter} \\ D. \ \text{Gravel pack} & IV. \ \text{Surging} \\ \hline \end{array} \]
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