500 Best Irrigation Engineering MCQ
Q97). The volume of a settling basin is large due to
a).Large volumes of floc added for coagulation
b).Large amount of water entrapped into it
c).Greater amount of suspended solids to be removed
d).None of the above
Correct Answer:
None of the above
Explanation:
Q98). The process of purifying water by passing it through a bed of fine granular material, is called
a).Screening
b).Filteration
c).Coagulation
d).Sedimentation
Correct Answer:
Filteration
Explanation:
Q99). The void spaces in the filtering material act like a
a).Drain
b).Inlet
c).Tiny settling basins
d).Outlet
Correct Answer:
Inlet
Explanation:
Q100). The organic impurities in water form a layer on the top of a filtering media. Such a layer is called
a).Permeable layer
b).Filtering layer
c).Dirty skin
d).None of these
Correct Answer:
Dirty skin
Explanation:
Q101). The sand used for filteration, should not loose weight more than ………… when placed in hydrochloric acid for 24 hours
a).0.025
b).0.05
c).0.075
d).0.1
Correct Answer:
0.05
Explanation:
Q102). The effective size of sand particles for slow sand filters varies from
a).0.30 to 0.35
b).0.35 to 0.50
c).0.50 to 0.65
d).0.65 to 0.75
Correct Answer:
0.30 to 0.35
Explanation:
Q103). The effective size of sand particles for rapid sand filters varies from
a).0.30 to 0.35
b).0.35 to 0.50
c).0.50 to 0.65
d).0.65 to 0.75
Correct Answer:
0.35 to 0.50
Explanation:
Q104). The coefficient of uniformity for slow sand filters is
a).1.35
b).1.55
c).1.75
d).2.05
Correct Answer:
1.75
Explanation: