109/23

71.

72.

73.

74.

75.

76.

77.

Which of the statement is not true in case of soil moisture movement ?

A) Darcy's law is applicable to saturated soil

B) Unsaturated soil-water movement can be called as capillary rise

C) Unsaturated flow ceases in clay textured soil relatively at lower tension than
sandy oil

D) Capillary conductivity would be relatively low at water content lesser than field
capacity

Which of the following soil texture along with sub soil would be considered as good
to excellent suitability for irrigation ?
A) Clay loam B) Loam C) Clay D) Sandy loam

In a field test of border strip irrigation method with given size of stream and strip
length, the advance and recession curves have been derived. If these two curves
are found to be mutually parallel, the unique interpretation or indication of the data
would be

A) Time of ponding B) Uniform distribution

C) Recession flow D) Elapsed time

In case of estimation of reference crop evapotranspiration using FAO-Penman-
Monteith method, the term psychometric constant (y) does directly proportional to
the following factor

A) Ratio of molecular weight of water vapour/dry air

B) Latent heat of vaporisation

C) Both A) and B)

D) Specific heat at constant pressure and atmospheric pressure

The velocity profile of the flow through open channel indicates the variability of
velocity along the depth. In order to determine the mean velocity of the channel
(<1 m depth) using current meter, it would be good estimate if measurement be taken

at depth (d) with respect to water surface.
A) 0.5d B) 0.2dand0.5d
C) 0.2dand0.8d ட) 0.5 0 3800 0.8 0

When a soil is dried in an oven at 105°C for at least 12 hours, soil sample reaches
to a stage where no water is left and that point would be corresponding roughly with
a value of potential force (p*) in the soil

A) pF-7 8) 07-14 ‏اکس وی‎ D) None of the above
With equal total head loss, the allowable maximum discharge in a non-uniform drain
pipe is higher by a factor of than for uniformly flowing transport pipe.
A) Square root of 3 B) 1/3
C) 1/(square root of 3) D) 3

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