Related Questions

If average particle size of the silt in millimeters is m, the Lacey's silt factor f is proportional to
A m3
B $${{\text{m}}^{\frac{1}{2}}}$$
C $${{\text{m}}^{\frac{1}{3}}}$$
D $${{\text{m}}^{\frac{2}{3}}}$$
The admixture of coarser particles like sand or silt to clay causes
A decrease in liquid limit and increase in plasticity index
B decrease in liquid limit and no change in plasticity index
C decrease in both liquid limit and plasticity index
D increase in both liquid limit and plasticity index
Size range of the colloidals particles is
A 5 - 200 milli-microns
B 50 - 200 microns
C 500 - 1000 microns
D 10 - 50 Angstrom
The material carried by the glacier such as rocks big and small, sand and silt gets deposited, which are called glacial ________.
A moraines
B deltas
C plateaus
D grooves
Clay and silt content in a good brick earth must be at least
A 50%
B 40%
C 30%
D 25%
V and R are the regime mean velocity and hydraulic mean depth respectively in meters. Lacey's silt factor f is
A $$\frac{{2{{\text{V}}^2}}}{{\sqrt 3 {\text{R}}}}$$
B $$\frac{{3{{\text{V}}^2}}}{{4{\text{R}}}}$$
C $$\frac{{5{{\text{V}}^2}}}{{2{\text{R}}}}$$
D $$\frac{{2{{\text{V}}^2}}}{{5{\text{R}}}}$$
The soil formed by the deposition of silt brought by rivers is ________
A Alluvial soil
B Red soil
C Black soil
D Pod soil
The soil which is a mixture of sand, clay and silt is known as ________
A Loamy soil
B Sandy soil
C Clayey soil
D Desert soil
As per Lacey’s theory, the silt factor is
A directly proportional to average par¬ticle size
B inversely proportional to average par¬ticle size
C directly proportional to square root of average particle size
D not related to average particle size
To control the silt entry into a distributary at head regulator, King's vanes are provided which are the walls
A Of R.C.C. or steel plate 8 cm thick
B Of height $${\frac{1}{3}^{{\text{rd}}}}$$ to $${\frac{1}{4}^{{\text{th}}}}$$ the depth of water in the main canal
C Spaced at interval of $$1\frac{1}{2}$$ times their heights
D All the above

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