CE2304 Environmental Engineering – I Question bank
CE2304
Environmental Engineering – I
Question bank
Prepared by
J.Thomas britto
Dept of Civil Engg
PREC
PART – A
1. Define the
term potable water.
2. State the
causes for water pollution.
3. Write the
advantage of sub-surface sources
4. What are the
uses of nomograms?
5. Define the
terms ‘Sedimentation’
6.
Differentiate between Temporary and Permanent hardness.
7. Draw the
typical line sketch of ‘Dead end system’.
8. What is
meant by equalizing reservoirs?
9. Rainwater
harvesting is the need of the hour – justify.
10. List the
commonly using disinfectant.
11. What are
the different tests done during water analysis?
12. What do you understand by the term per capita demand? In
a town or city for what purpose
generally water required.
13. What major precautions are taken in handling and laying
water pipe lines?
14. What are the
factors be considered for locating a pumping station?
15. Sketch the layout plan of water treatment plan.
16. What are various processes required to remove the
various types of impurities?
17. What are the requirements of a good distribution system?
18. Compare the merit and demerits of continuous and
intermittent supply system water
19. What are the factors to be considered for rain water
harvesting?
20. What are the various methods by which ground water
recharge is accomplished?
21. List out any four factors affecting rate of demand
22. What are the objectives of public water supply scheme?
23. What are the intakes?
24. What are the advantages of steel pipes in water supply
project?
25. What is the purpose of coagulation?
26. How can you classify filters into different categories?
27. What are the
general considerations of the water distribution system design?
28. Distinguish between Gravity system of distribution and
pumping system of distribution?
29. What is meant by “Ground Water Re-charge”?
30. List out the various methods of “Water Conservation”
presently followed in India?
31. State the
effects when each of the following substances exceeds the prescribed limits in
a water
sample.
(a)
Nitrates (b) fluorides
32. Define
‘percapita demand’.
33. What are
intakes?
34. What do you
mean by ‘tuberculation’ in pipelines?
35. Draw the
sequence of treatment you would recommend for ground water free from pollution
but containing dissolved salts in large concentrations.
36. What do you mean by disinfection?
37. What are the various methods of
distributing water?
38. What do you mean by ‘hydraulically
balanced network?
39. What do you mean by ‘appurtenances?
40. Write a note on reuse of waster water.
41. Define the term “Per capita demand”.
42. Give a list of different sources of
water.
43. Differentiate between ‘dry’ and ‘wet’
intake.
44. What are the different materials used
for water supply pipes?
45. What is meant by super chlorination?
46. List out four coagulants used in
treatment of water.
47. Mention any two differences between
intermittent and continuous water supply.
48. Give any two methods of leak detection
in pipes.
49. Define specific yield of ground water.
50. What is reuse of waste water? Give an
example.
PART – B
11. Define the
term ‘per capita
demand’. Write the
factors affecting ‘per
capita demand’ and
state the reasons
for variations in demand.
(or)
12. What are
the causes for
pollution of surface
and subsurface sources
of water? State
the measures to
be adopted to
prevent pollution of water.
13. Draw a
neat sketch of
canal intake and
explain the working principle. State its merit and demerits.
(or)
14. Describe the
procedure adopted for laying and testing of water mains.
15. Draw a typical line sketch of water
treatment plant and explain the various
components in it.
(or)
16. What do you
understand by the term water softening?
Explain with neat sketch the
zeolite process for softening of water.
17. Describe the various methods for laying the
distribution lines.
(or)
18. Write a brief
note leak detection and state the various tests used to detect the leakage of water.
19. Draw
a neat sketch
of a rain
water harvesting structure
and write the
problems associated with
operation and maintenance of rain water harvesting structures.
(or)
20. Discuss in
detail the concept of linking of Indian rivers.
Write the various constraints in
executing this project.
21 .Write in detail
about “Water Pollution” in India. (4)
(b) Explain in
detail about the
“Reasons for the
analysis of water”. (4)
(c) What are
the requirements of
potable water for
domestic
use?
(4)
(or)
22. (a) What are the
various methods of population forecasts?
(4)
(b) The census
records of a city show population as follows:
Present
50,000
Before
one decade
47,100
Before
two decades
43,500
Before
three decades
41,000
Workout the probable
population after one,
two and three decades
by using Incremental increase method (8)
23. (a) What considerations govern the choice of
a particular type of pump in water
supply project? (6)
(b) List
out the advantages
of cement concrete
pipes in water supply
project.
(6)
(or)
24. (a) What are
‘Air Valves’? Explain their working in detail.
(4)
(b) Explain in detail about ‘Canal
intakes’ with a neat diagram.
(8)
25. (a) Explain with
a neat sketch, the working of a continuous flow type sedimentation tank.
(8)
(b) Explain the
principle of coagulation (4)
(or)
26. (a) List out the
differences between slow sand and Rapid sand filters.
(8)
(b) What is
the necessity for disinfection of water? (4)
27. (a) Compare
the merits and
demerits of the
‘Continuous’ and ‘intermittent’ systems of water supply.
(b) Give
sketches of the following:
(i) Elevated
Reservoir
(ii) Surface
Reservoir
(or)
28. (a) Discuss
in detail about
‘Radial method’ of
layout of distribution pipes (6)
(b) What are
the points to be considered in the maintenance of distribution system of water supply?
29. (a) Explain
in detail about
how the ‘Rain
water harvesting’ is useful
in the conservation of water. (8)
(b) ‘Waste
Water is also
an unused, misplaced
resource’ Explain.
(4)
(or)
30. (a) Explain
the advantages and
disadvantages of ‘Linking
of Indian Rivers’
from Economical, Environmental
and Social point of views.
31. Mention the common impurities in water which
should be taken into account
in deciding the
potability of water.
sample.
Describe the essential tests to be performed on such a
sample.
(or)
32. The population
figures of a
town during the
four decades ie 1960, 1970,
1980 and 1990
are 25,000, 30,500,
35,500 and 42,000 respectively. Predict its population
in the year 2000 and compare the
results through Arithmetical progression. Geometrical progression,
Incremental increase method
and changing Increase Rate method.
33. Explain the
procedure for the complete testing of a newly laid C.I. pipe for carrying water supply.
(or)
34. What factors
are required to
be considered in
the selection of the type
of pump? Discuss
the situations under
which the following types of may be used.
(a)
Reciprocating pumps
(b) centrifugal pumps
(c) Air lift
pumps.
35. (a)
State the principles
of working of
a horizontal flow sedimentation
tanks.
(b) What
should be the size of a rectangular sedimentation tank to treat 1.0 MLD with 2 hours detention and
overflow rate less than 40,000 litres
per day per sq.m. of the surface areas?
(or)
36. (a) What are the
merits and demerits of the rapid sand filters as compared with slow sand filters?
(b) What is air binding? What are its
effects?
37. What
are the methods
available for supplying
water to the consumers?
Which one do you think to be preferable and why?
(or)
38. What are the
different methods of analyzing a given distribution system? Explain Hardz-Cross method of pipe
network analysis.
39. Explain various methods of ground water
recharging and state the factors to be
considered.
(or)
40. What are the
advantages of Rain water harvesting and discuss the various methods of rain water
harvesting.
41. Discuss
the various Physical,
Chemical and Biological
characteristics of water.
(or)
42. Name the
various methods of
population forecast and
explain the circumstances under
which it is applicable.
43. Mention any
three pipe appurtenances with neat sketches.
(or)
44. What are
intakes? Explain any
two intake structure
with neat
sketches.
45. Distinguish
between the slow sand filter and rapid sand gravity
sand filters in a tabular form.
(or)
46. Water has to be
purified for a town whose daily demand is 9 x
10 6 litres/day. Design a suitable sedimentation tank of the
water works fitted with sludge remover.
Assume the velocity of flow, in the
sedimentation tank as 22cm/min and the detention period as 8 hrs.
47. What are the different method of analyzing a
given distribution
system? Explain Hardy Cross method of pipe network analysis.
(or)
48. Write short
notes on:
(a) Service storage
(b) Fire hydrant
49. Explain briefly about “Rain Water
Harvesting”.
(or)
51. Linking of
Indian rivers – Discuss.
(a) Give the
permissible limits for
the following in
drinking water
(i)
Turbidity
(ii)
(ii)
Chlorides
(iii)
Nitrates
(iv)
(iv) Hardness
(v)
(v) Total Solids
(b) Enumerate the
method which you
can adopt for determining the total water requirement
of community.
(or)
52. (a) Name
five important communicable –
water borne diseases
what are the
fundamental requirement of
portable water.
(b) Describe the
bacteriological rests to be performed for
portable water.
53. Determine the
capacity of a
pump to meet
the water requirement
of town with the following data
(a) population of
the town
(b) Difference of
water level between the source and treatment
plant
(c) Efficiency of the
pump and it has to pump the water in 24 hours
(or)
54. (a) What
are the different
type of pipes
in use for
carrying water Indicate approximately diameters and pressure
ranges in which they are used.
(b) Explain and
Sketch any two types of joints used for water mains.
5. (a) What are the points to be considered for
public water supply?
(b) Explain the treatment processes carried out
for the removal of impurities in water?
56. (a) Discuss the relative merits of rapid sand
filters and slow sand filters indicating
the condition favorable for the choice
each
(b) Discuss the use
of chlorine as disinfecting agent with
reference to a.
a) Its disinfecting action.
b) Dosage
c) Its form
d) Testing its residuals
57. (a) What are the four different systems of
distribution? Explain any one system in
a neat sketch.
(b) What
are the different
types of reservoirs
used for storage
purposes? Explain any one system in a neat sketch.
(or)
58. (a) Explain the
hardy cross method used for pipe network
analysis in water distribution system.
(b) What are the main function of the storage and
distribution reservoirs?
59. (a) Explain the
Nalgonda technique of deflouridation by
exhibiting its use for an individual rural household.
(b) Describe the
methods of effective usage of waste water.
(or)
60. (a) Discuss in
detail the environmental aspects of linking of
Indian rivers.
(b) Describe the
procedure for removal of iron from raw
supplies in rural areas.
About Author:
I am Thomas Britto here to share my experiences in the civil engineering field to all my readers.Today many students are struggling to buy books at high prices. So I decided to start a blog and share my experience and knowledge with all my readers.
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