1. Assertion A : The consumption of water increases with increase in the distribution pressure.
Reason R : Higher distribution pressure causes more loss and waste of water.
Select your answer according to the coding system given below
2. The per capita consumption of a locality is affected by
3. Which of the following causes a decrease in per capita consumption ?
4. The hourly variation factor is usually taken as
5. If the average daily consumption of a city is 100,000 m3, the maximum daily con¬sumption on peak hourly demand will be
6. The distribution mains are designed for
7. As compared to geometrical increase method of forecasting population, arithmetical increase method gives
8. The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is
9. The suitable method of forecasting population for a young and rapidly increasing city is
10. The depression of water table in a well due to pumping will be maximum
11. The devices which are installed for drawing water from the sources are called
12. Select the correct relationship between porosity (N), specific yield (y) and specific retention (R)
13. The type of valve, which is provided on the suction pipe in a tube-well, is
14. The maximum discharge of a tube-well is about
15. As compared to shallow-wells, deep wells have
16. Ground water is usually free from
17. The polluted water is one which
18. Which of the following is not a water borne disease ?
19. The most common cause of acidity in water is
20. The phenolic compounds in public water supply should not be more than
21. The maximum permissible limit for flouride in drinking water is
22. Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the
23. If the coliform bacteria is present in a sample of water, then the coliform test to be conducted is
24. Alkalinity in water is expressed as milligrams per litre in terms of equivalent
25. Which of the following values of pH represents a stronger acid?
26. Turbidity is measured on
27. On standard silica scale, the turbidity in drinking water should be limited to
28. Residual chlorine in water is determined by
29. Orthotolidine test is used for determination of
30. If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to
31. The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about
32. The dissolved oxygen level in natural unpolluted waters at normal temperature is found to be of the order of
33. The velocity of flow of water in a sedimentation tank is about
34. The length of rectangular sedimentation tank should not be more than
35. The overflow rate for plain sedimentation tanks is about
36. Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about
37. The settling velocity of a particle in a sedimentation tank depends on
38. The settling velocity of a particle in a sedimentation tank increases if
39. For a given discharge, the efficiency of sedimentation tank can be increased by
40. The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally
41. The amount of coagulant needed for coagulation of water increases with
42. Alum as a coagulant is found to be most effective when pH range of water is
43. The detention period in coagulation tanks is usually kept as
44. The alum, when added as a coagulant in water
45. The chemical most commonly used to increase speed of sedimentation of sewage is
46. In water treatment, rapid gravity filters are adopted to remove
47. The rate of filtration in slow sand filters in million litres per day per hectare is about
48. The effective size of sand particles used in slow sand filters is
49. As compared to rapid sand filters, slow sand filters give
50. Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.
Reason R : The sand used in slow sand filters is finer than that in rapid sand filters.
Select your answer based on the coding system given below:
51. Air binding phenomena in rapid sand filters occur due to
52. The percentage of filtered water, which is used for backwashing in rapid sand filters, is about
53. Period of cleaning of slow sand filters is about
54. The rate of Alteration of pressure filters is
55. Double filtration is used
56. Cleaning is done by
57. Disinfection of water results in
58. The disinfection efficiency of chlorine increases by
59. Chlorine demand of water is equal to
60. The process in which the chlorination is done beyond the break point is known as
61. The percentage of chlorine in fresh bleaching powder is about
62. The treatment of water with bleaching powder is known as
63. The suitable method for disinfection of swimming pool water is
64. Which of the following chemical compounds can be used for dechlorination of water ?
65. In chlorination, with the rise in temperature of water, death rate of bacteria
66. As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is
67. Disinfection efficiency is
68. In lime-soda process
69. The major disadvantage of lime soda process of water softening is that
70. Which of the following compounds is widely used for algae control ?
71. Activated carbon is used for
72. As compared to cast iron pipes, steel pipes are
73. The suitable layout of a distribution system for irregularly growing town is
74. The layout of distribution system in which water flows towards the outer periphery is
75. The suitable layout of distribution system for a city with roads of rectangular pattern is
76. The commonly used material for water supply pipes, which has the properties of being strong, not easily corroded and long life but is heavy and brittle is
77. Hardy cross method of analysis of distribution system
78. The method of analysis of distribution system in which the domestic supply is neglected and fire demand is considered is
79. Which of the following methods of analysis of water distribution system is most suitable for long and narrow pipe
system ?
80. The type of valve which is provided to control the flow of water in the distribution system at street corners and where the pipe lines intersect is
81. The type of valve which allows water to flow in one direction but prevents its flow in the reverse direction is
82. Scour valves are provided
83. A sewer that receives the discharge of a number of house sewers is called
84. A pipe conveying sewage from plumbing system of a single building to common sewer or point of immediate disposal is called
85. For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be
86. Average rate of water consumption perhead per day as per Indian Standard is
87. Sewerage system is usually designed for
88. Which of the following sewers is preferred for combined system of sewage ?
89. The suitable system of sanitation for area of distributed rainfall throughout the year with less intensity is
90. The water carriage system of collection of waste product
91. If the time of concentration is 9 minutes, then the intensity of rainfall according to British Ministry of Health formula will be
92. The time of concentration is defined as
93. The specific gravity of sewage is
94. The self cleansing velocity for all sewers in India is usually
95. The slope of sewer shall be
96. The design discharge for the separate sewer system shall be taken as
97. The design discharge for the combined sewer system shall be taken as
98. The minimum and maximum diameters of sewers shall preferably be
99. The main disadvantage of cement concrete sewers is
100. Most suitable section of sewer in separate sewage system is
101. An egg shaped section of sewer
102. The velocity of flow does not depend on
103. The hydraulic mean depth (HMD) for an egg-shaped sewer flowing two-third full is
104. The effect of increasing diameter of sewer on the self cleansing velocity is
105. The most commonly used sewer under culverts is
106. The type of sewer which is suitable for both combined and separate system is
107. The characteristics of fresh and septic sewage respectively are
108. The pathogens can be killed by
109. Which of the following retards the self purification of stream ?
110. Sewage treatment units are normally designed for
112. Settling velocity increases with
113. Standard BOD is measured at
114. The correct relation between theoretical oxygen demand (TOD), Biochemical oxygen demand (BOD) and Chemical
oxygen demand (COD) is given by
115. Select the correct statement.
116. If Biochemical oxygen demand (BOD) of a town is 20000 kg/day and BOD per capita per day is 0.05 kg, then population equivalent of town is
117. The rate of BOD exerted at any time is
118. The ratio of 5 day BOD to ultimate BOD is about
119. In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at 20°C.
The BOD of raw sewage will be
120. The minimum dissolved oxygen which should always be present in water in order to save the aquatic life is
Reason R : Higher distribution pressure causes more loss and waste of water.
Select your answer according to the coding system given below
2. The per capita consumption of a locality is affected by
3. Which of the following causes a decrease in per capita consumption ?
4. The hourly variation factor is usually taken as
5. If the average daily consumption of a city is 100,000 m3, the maximum daily con¬sumption on peak hourly demand will be
6. The distribution mains are designed for
7. As compared to geometrical increase method of forecasting population, arithmetical increase method gives
8. The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is
9. The suitable method of forecasting population for a young and rapidly increasing city is
10. The depression of water table in a well due to pumping will be maximum
11. The devices which are installed for drawing water from the sources are called
12. Select the correct relationship between porosity (N), specific yield (y) and specific retention (R)
13. The type of valve, which is provided on the suction pipe in a tube-well, is
14. The maximum discharge of a tube-well is about
15. As compared to shallow-wells, deep wells have
16. Ground water is usually free from
17. The polluted water is one which
18. Which of the following is not a water borne disease ?
19. The most common cause of acidity in water is
20. The phenolic compounds in public water supply should not be more than
21. The maximum permissible limit for flouride in drinking water is
22. Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the
23. If the coliform bacteria is present in a sample of water, then the coliform test to be conducted is
24. Alkalinity in water is expressed as milligrams per litre in terms of equivalent
25. Which of the following values of pH represents a stronger acid?
26. Turbidity is measured on
27. On standard silica scale, the turbidity in drinking water should be limited to
28. Residual chlorine in water is determined by
29. Orthotolidine test is used for determination of
30. If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to
31. The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about
32. The dissolved oxygen level in natural unpolluted waters at normal temperature is found to be of the order of
33. The velocity of flow of water in a sedimentation tank is about
34. The length of rectangular sedimentation tank should not be more than
35. The overflow rate for plain sedimentation tanks is about
36. Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about
37. The settling velocity of a particle in a sedimentation tank depends on
38. The settling velocity of a particle in a sedimentation tank increases if
39. For a given discharge, the efficiency of sedimentation tank can be increased by
40. The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally
41. The amount of coagulant needed for coagulation of water increases with
42. Alum as a coagulant is found to be most effective when pH range of water is
43. The detention period in coagulation tanks is usually kept as
44. The alum, when added as a coagulant in water
45. The chemical most commonly used to increase speed of sedimentation of sewage is
46. In water treatment, rapid gravity filters are adopted to remove
47. The rate of filtration in slow sand filters in million litres per day per hectare is about
48. The effective size of sand particles used in slow sand filters is
49. As compared to rapid sand filters, slow sand filters give
50. Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.
Reason R : The sand used in slow sand filters is finer than that in rapid sand filters.
Select your answer based on the coding system given below:
51. Air binding phenomena in rapid sand filters occur due to
52. The percentage of filtered water, which is used for backwashing in rapid sand filters, is about
53. Period of cleaning of slow sand filters is about
54. The rate of Alteration of pressure filters is
55. Double filtration is used
56. Cleaning is done by
57. Disinfection of water results in
58. The disinfection efficiency of chlorine increases by
59. Chlorine demand of water is equal to
60. The process in which the chlorination is done beyond the break point is known as
61. The percentage of chlorine in fresh bleaching powder is about
62. The treatment of water with bleaching powder is known as
63. The suitable method for disinfection of swimming pool water is
64. Which of the following chemical compounds can be used for dechlorination of water ?
65. In chlorination, with the rise in temperature of water, death rate of bacteria
66. As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is
67. Disinfection efficiency is
68. In lime-soda process
69. The major disadvantage of lime soda process of water softening is that
70. Which of the following compounds is widely used for algae control ?
71. Activated carbon is used for
72. As compared to cast iron pipes, steel pipes are
73. The suitable layout of a distribution system for irregularly growing town is
74. The layout of distribution system in which water flows towards the outer periphery is
75. The suitable layout of distribution system for a city with roads of rectangular pattern is
76. The commonly used material for water supply pipes, which has the properties of being strong, not easily corroded and long life but is heavy and brittle is
77. Hardy cross method of analysis of distribution system
78. The method of analysis of distribution system in which the domestic supply is neglected and fire demand is considered is
79. Which of the following methods of analysis of water distribution system is most suitable for long and narrow pipe
system ?
80. The type of valve which is provided to control the flow of water in the distribution system at street corners and where the pipe lines intersect is
81. The type of valve which allows water to flow in one direction but prevents its flow in the reverse direction is
82. Scour valves are provided
83. A sewer that receives the discharge of a number of house sewers is called
84. A pipe conveying sewage from plumbing system of a single building to common sewer or point of immediate disposal is called
85. For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be
86. Average rate of water consumption perhead per day as per Indian Standard is
87. Sewerage system is usually designed for
88. Which of the following sewers is preferred for combined system of sewage ?
89. The suitable system of sanitation for area of distributed rainfall throughout the year with less intensity is
90. The water carriage system of collection of waste product
91. If the time of concentration is 9 minutes, then the intensity of rainfall according to British Ministry of Health formula will be
92. The time of concentration is defined as
93. The specific gravity of sewage is
94. The self cleansing velocity for all sewers in India is usually
95. The slope of sewer shall be
96. The design discharge for the separate sewer system shall be taken as
97. The design discharge for the combined sewer system shall be taken as
98. The minimum and maximum diameters of sewers shall preferably be
99. The main disadvantage of cement concrete sewers is
100. Most suitable section of sewer in separate sewage system is
101. An egg shaped section of sewer
102. The velocity of flow does not depend on
103. The hydraulic mean depth (HMD) for an egg-shaped sewer flowing two-third full is
104. The effect of increasing diameter of sewer on the self cleansing velocity is
105. The most commonly used sewer under culverts is
106. The type of sewer which is suitable for both combined and separate system is
107. The characteristics of fresh and septic sewage respectively are
108. The pathogens can be killed by
109. Which of the following retards the self purification of stream ?
110. Sewage treatment units are normally designed for
112. Settling velocity increases with
113. Standard BOD is measured at
114. The correct relation between theoretical oxygen demand (TOD), Biochemical oxygen demand (BOD) and Chemical
oxygen demand (COD) is given by
115. Select the correct statement.
116. If Biochemical oxygen demand (BOD) of a town is 20000 kg/day and BOD per capita per day is 0.05 kg, then population equivalent of town is
117. The rate of BOD exerted at any time is
118. The ratio of 5 day BOD to ultimate BOD is about
119. In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at 20°C.
The BOD of raw sewage will be
120. The minimum dissolved oxygen which should always be present in water in order to save the aquatic life is
No comments:
Post a Comment