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Environmental Engineering Interview
Quiz 1
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Q.1
In which of the following filters, the rate of filtration is highest?
a) Slow sand filter
b) Rapid sand filter
c) Pressure filter
d) Roughing filter
Q.2
The final loss of head in slow sand filter is ______ than rapid sand filter.
a) Higher
b) Lower
c) Slightly Lower
d) Equivalent
Q.3
The turbidity of water applied to rapid sand filter is less than _______
a) 35-40ppm
b) 10-20ppm
c) 30-40ppm
d) 10-15ppm
Q.4
The period of cleaning of a slow sand filter is ______ than rapid sand filter.
a) Smaller
b) Larger
c) Slightly smaller
d) Slightly larger
Q.5
The bacterial removal efficiency of the rapid sand filter is ______ in comparison to slow sand filter.
a) More
b) Less
c) Equal
d) Better
Q.6
How is the grain size distribution of sand in rapid sand filter?
a) Stratified
b) Unlayered
c) Layered with heaviest grains at the top
d) Layered with lightest grains at the top
Q.7
Consider the following statement.
a) Only iii
b) i, ii
c) i, ii, iii
d) ii, iii
Q.8
Consider the following statement.
a) Only iii
b) i, ii
c) i, ii, iii
d) ii, iii
Q.9
The filter run in rapid sand filter should not be less than _____ hours.
a) 1
b) 6
c) 12
d) 24
Q.10
Consider the following statement.
a) i, ii
b) i, ii, iii
c) ii, iii
d) Only iii
Q.11
Rapid sand filters are very efficient in removal of color.
a) True
b) False
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