Quiznetik
Environmental Engineering | Set 2
1. All of the following give Beta and Gamma radiations EXCEPT
A. Iridium 192
B. Iodine 131
C. Cobalt 60
D. Polonium 210
E. None of the above
Correct : D. Polonium 210
2. Which of the following is pesticide?
A. Endrin
B. Aldrin
C. Toxaphone
D. DDT
E. All of the above
Correct : E. All of the above
3. DDT is
A. An inorganic compound
B. A compound of phosphours
C. A chlorinated hydrocarbon
D. A naturally occurring chemical
E. None of the above
Correct : C. A chlorinated hydrocarbon
4. Term REM is used for
A. solar radiation
B. flame photography
C. radiation exposure
D. none of the above
E. None of the above
Correct : C. radiation exposure
5. While comparing tungsten filament lamps with fluorescent tubes, all of the following are the advantages in favour of tungsten filament lamp EXCEPT
A. Longer life
B. Low cost
C. More brightness
D. Simple installation
E. None of the above
Correct : A. Longer life
6. Odours are generally expressed in terms of
A. Hardness number
B. Gravity number
C. Index number
D. Threshold number
E. None of the above
Correct : D. Threshold number
7. Disinfection of water is done by
A. Filtration
B. Alum
C. Ozone
D. Heating and cooling
E. Passing chlorine
Correct : E. Passing chlorine
8. Which of the following is/are renewable sources of energy?
A. Fall or flow of water
B. Sun
C. Wood
D. All of the above
E. Green
Correct : D. All of the above
9. The maximum concentration of lead in drinking water should not exceed.
A. 0.0005 mg/litre
B. 0.005 mg/litre
C. 0.05 mg/litre
D. 0.5 mg/litre
E. 5 mg/litre
Correct : C. 0.05 mg/litre
10. Ash content of a diesel fuel should not exceed
A. 10%
B. 1%
C. 0.50%
D. 0.01%
E. None of the above
Correct : C. 0.50%
11. In power plant an electrostatic precipitators is installed between
A. Forced draft fan and furnace
B. Furnace and chimney
C. Primary air and secondary air
D. Induced draft fan and forced draft fan
E. Air preheater and water treatment plant
Correct : B. Furnace and chimney
12. Which emission has generally least proportion from a diesel engine as compared to a petrol engine?
A. Oxides of nitrogen
B. Hydrocarbons
C. Carbon monoxide
D. All of the above
E. None of the above
Correct : A. Oxides of nitrogen
13. Which of the following turbidimeter gives direct readings in ppm
A. Jackson turbidimeter
B. Hellige turbidimeter
C. Baylis turbidimeter
D. All of the above
E. None of the above
Correct : A. Jackson turbidimeter
14. Which of the following gas can be analysed by chemiluminescence?
A. Ozone
B. Carbon dioxide
C. Nitrogen
D. All of the above
E. None of the above
Correct : A. Ozone
15. Permissible noise level in small conference room is
A. 10 to 15 dB
B. 15 to 25 dB
C. 35 to 40 dB
D. 55 to 60 dB
E. None of the above
Correct : C. 35 to 40 dB
16. The aeration of water is done for the removal of
A. Colour
B. Turbidity
C. Bacteria
D. Odour
E. Hardness
Correct : D. Odour
17. The method used for the removal of fine suspended particle is
A. Filtration
B. Agitation
C. Flotation
D. Aeration
E. Screening
Correct : A. Filtration
18. Which organisms cause infections diseases?
A. Viruses
B. Worms
C. Protozoa
D. Fungi
E. All of the above
Correct : E. All of the above
19. Alum increases
A. Hardness of water
B. Carbonates of water
C. Sulphates in water
D. Acidity of water
E. None of the above
Correct : D. Acidity of water
20. Which of the following industry will usually have the highest concumption of water for processing?
A. Foundry
B. Steel plant
C. Automobile industry
D. Paper mill
E. Aluminium industry
Correct : D. Paper mill
21. Electrodialysis is the process of removal of
A. soluble gases in water
B. dissolved solids in water
C. suspended solids in water
D. none of the above
E. None of the above
Correct : B. dissolved solids in water
22. The presence of fluorides in drinking water helps in
A. Purification of water
B. Preventing decaying of teeth
C. Deodourisation of water
D. Reduces fungi formation
E. Killing aerobic bacteria
Correct : B. Preventing decaying of teeth
23. Which radio nuclide has the least half life period?
A. Carbon 14
B. Iodine 131
C. Radium
D. Hydrogen 3
E. None of the above
Correct : B. Iodine 131
24. Identify the incorrect statement if any
A. If the pH value of water is 14 the water has maximum alkalinity
B. pH value of 6 represents acidic water
C. Water having pH value 4 will be more acidic than water having pH value of 6
D. Maximum acidity of water is indicated by pH value of zero
E. None of the above
Correct : D. Maximum acidity of water is indicated by pH value of zero
25. The science of poisons - their effects, antidotes and detection, is known as
A. Toxicology
B. Minerology
C. Petrology
D. Poisonology
E. Hermetilogy
Correct : A. Toxicology
26. Which of the following can have octane rating of more than 100?
A. Gobar gas
B. Methyl alcohol
C. Benzol
D. Ethyl alcohol
E. None of the above
Correct : C. Benzol
27. Which thermometer is used to indicate the lowest temperature?
A. Clinical thermometer
B. Alcohol thermometer
C. Resistance thermometer
D. Liquid thermometer
E. Green
Correct : B. Alcohol thermometer
28. In the jet propulsion, efficiency of the propulstion depends upon
A. The speed of the vehicle
B. Height at which the vehicle is travelling
C. Density of the medium in which the vehicle is travelling
D. All of the above
E. Green
Correct : C. Density of the medium in which the vehicle is travelling
29. The speed of sound in air is
A. 144 m/s
B. 344 m/s
C. 1344 m/s
D. 3344 m/s
E. None of the above
Correct : B. 344 m/s
30. Which of the following shading device will transmit least leat inside a room?
A. Plain glass sheet 3 mm thick
B. Plain glass sheet with wire mesh outside
C. Plain glass sheet with Venetion blind inside
D. Plain glass with curtain inside
E. None of the above
Correct : D. Plain glass with curtain inside
31. All of the following pollutants are produced as a result of decaying organic matter EXCEPT
A. Ammonia
B. Sulphur dioxide
C. Methane
D. Hydrogen sulphide
E. None of the above
Correct : B. Sulphur dioxide
32. Half life period for carbon 14 is nearly
A. 1.2 days
B. 5.73 days
C. 5.73 years
D. 5730 days
E. None of the above
Correct : D. 5730 days
33. The unit parts per million is identical to
A. Grains per galleon
B. Pounds per cubic foot
C. Milligrams per kg
D. Tonnes peracre foot
E. None of the above
Correct : C. Milligrams per kg
34. Which fuel will have least air consumption per kg of fuel during consumption?
A. Gasoline
B. Benzol
C. Spirit
D. Lubricating oil
E. None of the above
Correct : C. Spirit
35. The desirable temperature inside an air conditioned auditorium is
A. 0?C
B. 5?C
C. 10?C
D. 20?C
E. None of the above
Correct : D. 20?C
36. One kg of octane is burnt by four alternative processes given below. In which case the work available will be maximum
A. When burnt in an open pan in atmosphere
B. When burnt in an internal combustion engine
C. When burnt in a fuel cell
D. When burnt in a reversible process
E. None of the above
Correct : D. When burnt in a reversible process
37. Which of the following is a cold cathode lamp?
A. Sodium vapour lamp
B. High pressure mercury vapour lamp
C. Low pressure mercury vapour lamp
D. Neon lamp
E. None of the above
Correct : D. Neon lamp
38. Corrosive action of water could be due to its
A. alkalinity
B. hardness
C. dissolved oxygen
D. Any of the above
E. None of the above
Correct : D. Any of the above
39. The anitdote for the poisonous effects due to mercury, is
A. Vitamin K
B. BAL
C. Thiosulphate
D. Altropine
E. Any of the above
Correct : B. BAL
40. The speed of sound through human body is around
A. 344 m/s
B. 688 m/s
C. 1560 m/s
D. 3120 m/s
E. None of the above
Correct : C. 1560 m/s
41. A fuel of octane rating 85 matches the antiknock qualities of a mixture consisting of
A. 85% petrol + 15% diesel
B. 15% petrol + 85% diesel
C. 85% benzene + 15% methyl chloride
D. 85% octane + 15% heptane
E. None of the above
Correct : D. 85% octane + 15% heptane
42. For controlling the growth of algae, the chemical generally used is
A. Alum
B. Lime
C. Bleaching powder
D. Copper sulphate
E. Ozone
Correct : D. Copper sulphate
43. Out of the following metals the least permissible percentage in drinking water is
A. Chromium
B. Copper
C. Zinc
D. Lead
E. None of the above
Correct : A. Chromium
44. The first aid for a victim of electric shock is
A. bandage
B. sprinkling of water on the face
C. glass of milk and cold water
D. artificial respiration
E. None of the above
Correct : D. artificial respiration
45. Prechlorination
A. Improves coagulation
B. Reduces odours
C. Reduces organisms
D. All of the above
E. None of the above
Correct : E. None of the above
46. Which of the following engines uses two fuels simulataneously?
A. Multifuel engine
B. Wankel engines
C. Free piston gas generator
D. Dual fuel engines
E. None of the above
Correct : D. Dual fuel engines
47. On board ships, the source of drinking water may be
A. Rain water
B. Sea water
C. Desalted sea water
D. Pumped deep sea water
E. Any of the above
Correct : C. Desalted sea water
48. Which pollutants result from automobile exhaust?
A. Carbon monoxide
B. Nitrous oxide
C. Hydrocarbons
D. Sulphur dioxide
E. All of the above
Correct : E. All of the above
49. The flouride content in the drinking water should not exceed
A. 200 mg/litre
B. 150 mg/litre
C. 100 mg/litre50 mg/litre
D. 50 mg/litre
E. 1 mg/litre
Correct : E. 1 mg/litre
50. How many kg of air will contain one kg of oxygen?
A. 1 kg
B. 4.35 kg
C. 8.70 kg
D. 12.5 kg
E. None of the above
Correct : B. 4.35 kg
51. The bactericidal, virucidal and cysticidal efficiency of chlorine as a disinfectant
A. increases with a decrease in pH
B. increases with a increase in pH
C. decreases with a decrease in pH
D. decreases with an increase in pH
E. None of the above
Correct : A. increases with a decrease in pH
52. The air consumption of a four stroke diesel engine per rated BHP per hour will be
A. 1 kg
B. 5 to 7 kg
C. 10 to 14 kg
D. 20 kg
E. None of the above
Correct : B. 5 to 7 kg
53. The discharge of hydrocarbons from automobile exhaust is maximum when the vehicle is
A. Idling
B. Cruising at low speeds
C. Accelerating
D. Decelerating
E. Cruising at high speeds
Correct : A. Idling
54. The term BOD is associated with pollution arising out of
A. air
B. water
C. noise
D. land
E. None of the above
Correct : B. water
55. Lead poisoning occurs when the lead content in water is
A. 300 - 500 ppm
B. 30 - 50 ppm
C. 10 - 15 ppm
D. 3 - 5 ppm
E. 0.3 - 0.5 ppm
Correct : E. 0.3 - 0.5 ppm
56. Which of the following does not use ambient air for propulsion?
A. Turbo jet
B. Pulse jet
C. Turbo-prop
D. Rocket
E. None of the above
Correct : D. Rocket
57. Which of the following units measures the memory of the Computer?
A. Volts
B. Amperes
C. Ohms
D. Bits
E. None of these
Correct : D. Bits
58. A hard water may contain
A. Calcium carbonate
B. Magnesium sulphate
C. Magnesium bicarbonate
D. Any of the above
E. None of the above
Correct : D. Any of the above
59. Which of the following operation produces highest noise level?
A. welding
B. Riveting
C. Machining
D. Pressing
E. None of the above
Correct : B. Riveting
60. Water gas is a mixture of
A. CO and H2
B. N2 and H2
C. CO2 and N2
D. SO2, CO2 and N2
E. None of the above
Correct : A. CO and H2
61. Which of the following gas has least proportion in atmospheric air?
A. Argon
B. Carbondioxide
C. Neon
D. Helium
E. None of the above
Correct : D. Helium
62. Which of the following symptom is not common between food poisoning and carbon monoxide poisoning?
A. Nausea
B. Vomiting
C. Headache
D. All of the above
E. None of the above
Correct : C. Headache
63. The atmosphere gets heated up mainly by
A. Direct sun-rays
B. Radiation from the earth's surface
C. Heat of the earth's interior
D. Radiogenic heat
E. None of these
Correct : B. Radiation from the earth's surface
64. The ratio activity of water due to Strontium can be removed by
A. Aeration
B. Alum coagulation
C. Phosphate coagulation
D. Lime
E. Lime - Soda solution
Correct : C. Phosphate coagulation
65. Aeration of water is done for all of the following purposes EXCEPT for
A. removal of bad tastes
B. removal of carbon dioxide
C. increasing the quantity of oxygen in water
D. removal of temporary hardness
E. None of the above
Correct : D. removal of temporary hardness
66. Which of the following plant is highly sensitive to mercury vapour?
A. Sunflower
B. Ivy
C. Aloc
D. Cherry
E. Sarcococca
Correct : A. Sunflower
67. The emission of carbon monoxide in automobile exhaust will be low when the vehicle is
A. Idling
B. Cruising at low speed
C. Cruising at high speed
D. Accelerating
E. Decelerating
Correct : C. Cruising at high speed
68. For removal of temporary hardness of water
A. Water is filtered
B. Water is boiled
C. Alum is added to water
D. Lime is added to water
E. Chlorine is passed through water
Correct : C. Alum is added to water
69. The total count of bacteria in portable water should not exceed
A. 10,000 per c.c.
B. 5000 per c.c.
C. 998 per c.c.
D. 10 per c.c.
E. 1 mg/litre
Correct : D. 10 per c.c.
70. The rate at which atoms of radioactive sources disintegrate is measured in terms of
A. Cuire
B. Atomic number
C. Wavelength
D. Frequency
E. None of the above
Correct : A. Cuire
71. BF3 counter can detect which of the following radiations?
A. Alpha particles
B. Neutrons
C. X-rays
D. Beta rays
E. None of the above
Correct : B. Neutrons
72. For minimal eye irritation, pH value of swimming pool water should be in the range
A. 6.2 to 6.8
B. 6.5 to 7.0
C. 7.0 to 7.2
D. 7.5 to 7.6
E. None of the above
Correct : D. 7.5 to 7.6
73. Car speed of a lift is usually
A. 0.1 to 0.3 m/s
B. 0.5 to 1 m/s
C. 2 to 5 m/s
D. 7 to 10 m/s
E. None of the above
Correct : B. 0.5 to 1 m/s
74. A blue smoke from a diesel engine indicates presence of
A. Nitrous oxide
B. Carbon dioxide
C. Carbon monoxide
D. Unburnt oil
E. Unburnt carbon
Correct : D. Unburnt oil
75. Which of the following is not a constituent of coal?
A. Hydrogen
B. Nitrogen
C. Inorganic matter
D. Manganese
E. None of the above
Correct : D. Manganese
76. For portable water the permissible pH value is
A. 1 - 4.5
B. 4.5 - 7
C. 7 - 8.5
D. 9 -- 11
E. 11 -- 14
Correct : C. 7 - 8.5
77. The percentage of krypton in atmospheric air is around
A. 0.01 ppm
B. 0.1 ppm
C. 1 ppm
D. 10 ppm
E. None of the above
Correct : C. 1 ppm
78. Which of the following is the major source of environmental pollution in urban areas?
A. Rolling mills
B. Power plants
C. Automobiles
D. Floor mills
E. Electronic industries
Correct : C. Automobiles
79. Which of the following is considered as the noble gas?
A. Oxygen
B. Ozone
C. Hydrogen
D. Argon
E. None of these
Correct : D. Argon
80. Which of the following is an artificial source of energy?
A. Sun
B. Coal
C. Wood
D. Electricity
E. None of these
Correct : D. Electricity
81. The hardness of soft water (in ppm) is
A. 0 - 50
B. 50 - 150
C. 200 - 350
D. 375 - 500
E. 500 - 1000
Correct : A. 0 - 50
82. The cycle of life, death and decay involving organic nitrogeneous matter is called
A. The sulphur cycle
B. The nitrogen cycle
C. The carbon cycle
D. The hydrological cycle
E. None of the above
Correct : B. The nitrogen cycle
83. The process of removal of permanent hardness of water is
A. Zeolite process
B. Sedimentation process
C. Filtration process
D. Boiling process
E. Lime process
Correct : A. Zeolite process
84. Fuel which detonates easity is
A. Benzene
B. Iso-octance
C. n-heptane
D. Toulene
E. None of the above
Correct : C. n-heptane
85. Which of the following constituent has highest proportion in atmospheric air?
A. Nitrous oxide
B. Carbon monoxide
C. Helium
D. Neon
E. None of the above
Correct : D. Neon
86. Which of the following acts as ignition accelerator for C.I. engine fuels?
A. Acetone peroxide
B. Hydrogen peroxide
C. Aromatic compounds
D. n-heptane
E. None of the above
Correct : A. Acetone peroxide
87. Which of the following measures the heat of combustion?
A. Bomb's calorimeter
B. Thermostat
C. Beckmann's thermometer
D. Refrigerator
E. Green
Correct : A. Bomb's calorimeter
88. Which of the following is unlikely to be the pollutant from a sulphuric acid plant?
A. Sulphur dioxide
B. Sulphur trioxide
C. Acid mist
D. Hydrogen sulphide
E. All of the above
Correct : D. Hydrogen sulphide
89. For the maximum alkalinity of water, the pH value would be
A. Zero
B. 7
C. 8
D. 14
E. 20
Correct : D. 14
90. Zeolite is
A. A naturally occurring salt
B. Hydread silica
C. Silicon carbide
D. Hydrated calcium silicate
E. Hydrated alumino-silicate
Correct : E. Hydrated alumino-silicate
91. Which of the following particles will be smallest in size?
A. Smog
B. Rain
C. Drizzle
D. Mist
E. Fog
Correct : A. Smog
92. Which of the following disease is associated with air pollution?
A. Bronchial asthma
B. Chronic bronchitis
C. Emphysema
D. All of the above
E. None of the above
Correct : D. All of the above
93. The water borne bacterial infections may cause
A. Typhoid fever
B. Dysentery
C. Cholera
D. Any of the above
E. None of the above
Correct : D. Any of the above
94. LPG stands for
A. Liquefied petroleum gas
B. Low pressure gas
C. Lubricated and purified gas
D. Low purity gas
E. None of the above
Correct : A. Liquefied petroleum gas
95. Which of the following symptoms will not show that combustion is necessarily complete?
A. Presence of free carbon is exhaust
B. Presence of carbon monoxide in exhaust
C. Presence of oxygen in exhaust
D. Presence of nitrogen in exhaust
E. None of the above
Correct : D. Presence of nitrogen in exhaust
96. Thiosulphate is the antidote for the poisonous effect due to
A. Arsenic
B. Lead
C. Mercury
D. Cyanide
E. Organic phosphorous compounds
Correct : D. Cyanide
97. Low grade fuels have
A. low moisture content
B. low ash content
C. low calorific value
D. low carbon content
E. None of the above
Correct : C. low calorific value
98. Curies is a measure of
A. biological effect of radiation which a man can sustain
B. the rate at which atoms of radioactive sources disintegrate
C. 86 ergs of energy per gram of air
D. ions percent in an ionised gas
E. None of the above
Correct : A. biological effect of radiation which a man can sustain
99. The presence of algae in water indicates that the water is
A. Hard
B. Soft
C. Acidic
D. Pune
E. Free from turbidity
Correct : C. Acidic
100. Electrostatic precipitators are largely used in
A. water treatment plants
B. sewage disposal plants
C. Thermal power plants
D. nuclear power plants
E. None of the above
Correct : C. Thermal power plants