Roll No_________
WATER SUPPLY AND
WASTE WATER ENGINEERING
4th
Exam /Civil/5165/Dec 07
Duration 3 Hrs.
Section –A
1.
Choose the correct one
a.
Any trap is intended to trap
i.
Water
ii.
Sewage of sullage
iii.
Any liquid waste
iv.
Foul gases
b.
Disinfection is the process of
i.
Killing all bacteria
ii.
Killing only pathogenic bacteria
iii.
Removal of causative organism for disease
iv.
Complete destruction of life
c.
A water born disease is
i.
Malaria
ii.
Cancer
iii.
Dysentery
iv.
Encephalitis
d.
A sewer that collects sewage from toilet is
called.
i.
Lateral
ii.
Branch sewar
iii.
Main sewar
iv.
Outfall sewar
e.
The pipe in building through which human excreta
flows is called.
i.
Soil pipe
ii.
Waste pipe
iii.
Vent pipe
iv.
None of these
State true or false:
a.
P H value of drinking water should be
more than 8,
b.
Kitchen waste is sullage.
c.
Slow sand filters require less area
d.
BOD of safe drinking water must be nil.
Masonry
sewers are used for small sizes.
Fill in the
blanks:
a.
The process of supporting the sides of trenches
by wooden members is the termed as ______
b.
Alum is used for ______
c.
Units of turbidity are ______
d.
A sewer, which receives storm water, surface
run- off and sewage , is called ______ sewer.
e.
Sluice valve is provided to ________ the flow of
water through the pipe.
Section-B
Note : Attempt any ten questions
a.
What do you mean by the term per capita demand?
b.
What do you mean by MPN?
c.
What is break point chlorination ?
d.
Differentiate between arithmetic and geometrical
methods of for casting the population.
e.
What is the purpose of filtration?
f.
When water is said to be potable?
g.
Differentiate between DWF and Storm sewage
h.
Define the separate system of sewerage
i.
What is the self cleansing velocity?
j.
Define aerobic conditions.
k.
What is antisyphonage pipe?
Section-C
Note : Attempt any three questions
2.
Explain the different methods of sewage disposal
3.
Explain in brief the ring system of water
distribution
4.
Define the various types of impurities in water
and discuss their effects
5.
Explain the steps involved in activated sludge
proceses.
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North India Campus