# Irrigation And Water Resources Part 1

## Irrigation And Water Resources Part 1

Category –CE Online Test

Attempt Free Irrigation And Water Resources Part 1 Here. Read The Important Civil MCQ From Below.

Q1. The coefficient of uniformity for slows and filters is
A. 1.35
B. 1.55
C. 1.75
D. 2.05

Q2. If A is the area of the surface, x is the depth of its C.G. from the surface of the water and ω is the density of water, then.
A. total pressure on the surface is equal to Ï‰ x
B. depth of the point at which total pressure acts is equal to its moment of inertia divided by A x
C. depth of the centre of pressure is 2/3H vertically below the surface
D. all the above.

Irrigation And Water Resources Part 1

Q3. The required percentage of total water available for washing the filter of slow sand filter is
A. 0.2 to 0.5%
B. 2 to 4%
C. 0.2 to 4%
D. Zero%

Q4. In a syphon aqueduct.
A. drainage passes over the canal and F.S.L. of the canal is below the bottom of the drainage trough
B. drainage passes over the canal and F.S.L. of the canal is above the bottom of the drainage troug
C. canal passes over the drainage and H.F.L. of the drainage is above the bottom of the canal trough
D. canal passes over the drainage and H.F.L. of the drainage is below the bottom of the canal trough.

Irrigation And Water Resources Part 1

Q5. The void spaces in the filtering material act like
A. Drain
B. Inlet
C. Tiny settling basins
D. Outlet

Q6. According to Lacey, in regime conditions.
A. silt is kept in suspension by vertical components of eddies
B. entire cross-section of the channel is generated at all points by the forces normal to the wetted perimeter
C. both (a) and (b)
D. neither (a) nor (b).

Irrigation And Water Resources Part 1

Q7. Most commonly used section in the grade aqueduct is
A. Circular
B. Rectangular
C. Parabolic
D. All of these

Q8. The total count of bacteria in potable water should not exceed
A. 10000 per c.c.
B. 1000 per c.c.
C. 100 per c.c.
D. 10 per c.c.

Irrigation And Water Resources Part 1

Q9. The permissible amount of nitrites present in potable water is
A. Nil
B. 5 ppm
C. 10 ppm
D. 20 ppm

Q10. The permissible pH value for public supply water is between
A. 4.5 to 5.5
B. 5.5 to 6.5
C. 6.5 to 8.5
D. 8.5 to 10.5

Irrigation And Water Resources Part 1

Q11. Maximum consumption of water is noticed in
A. Paper factory
B. Steel plant
C. Automobile industry
D. Foundary

Q12. The specific retention is least in
A. Coarse gravel
B. Sand
C. Clay
D. Silt

Q13. Run off can be estimated by
A. Infiltration method
B. Unit hydrograph
C. Rational method
D. Any of the above

Irrigation And Water Resources Part 1

Q14. A line joining places of equal rainfall depth in a given duration is known as
A. Isogonic line
B. Isohyet
C. Wet contour
D. None of the above

Q15. Best method of assessment of irrigation water is
A. Crop rate
B. Betterment levy
C. Seasonal rate
D. Volumetric rate