1 Burning of fossil fuel
causes increased.
C A livestock
B waste
C global warning
D soil erosion
2 The duty of environment technologists is to project and
present.
B A new
invention and techniques
B ideas of environment conservation
C environment problems
D solution to weather control
3 Important components of an ecosystem are.
A A air
water and soil
B energy water nitrogen and soil minerals
C carbon hydrogen and nitrogen
D buildings roads and schools
4 Indiscriminate cutting or ever harvesting of trees for timber
or pulp or to clear for agriculture ranching construction or other human
activities.
B A desertification
B deforestation
C cultivation
D over population
5 A substance having harmful effect on health is called
D A environment
B atmosphere
C climate
D pollution
6 Relation between life
cycles and nutrients is called
C A ecology
B embryology
C ecosystem
D geosystem
7 Which of the following is inorganic pollutant.
A A dust
B noise
C urine
D minerals
8 Which of the following is an organic pollutant
D A dust
B noise
C minerals
D urine
9 Proteins are major components of
A A animals
B plants
C fats
D sugar
10 Low ph value of sewage shows its
A A acidity
B alkalinity
C netral
D both a & b
11 Presence of algae in water may cause.
B A increase
in carbon dioxide
B increase in oxygen
C increase ph value
D increase organic wastes
12 Aitrogen indicate the presence of ________ in the sewage.
A A organic
matter
B inorganic matter
C gases
D all of these
13 Turbidity in water is due to
D A high
temperature
B excessive dissolved matters
C gaseous materials
D solids particles
14 Is used for the removal of suspended solids oil & grease
from the waste water
B A sedimentation
B flotation
C retention
D chlorination
15 Treatment often called clarification sedimentation or setting.
A A primary
B secondary
C tertiary
D binary
16 Making industrial wastes nonreactive is termed as
B A filtration
B neutralization
C filtration
D sedimentation
17 Odour of the sewage is an indicator of
C A inorganic
matters
B organic matters
C gaseous substances
D dissolved substances
18 Refers to the selective destruction of disease causing
organisms.
B A aeration
B chlorination
C coagulation
D filtration
19 Collected sludge can be used as
A A manure
B fuel
C dumping material
D all of these
20 Bacteria which digest organic and inorganic matter in a septic
tank is termed as
B A aerobic
bacteria
B anaerobic bacteria
C facultative bacteria
D thermophilic bacteria
21 The most desirable way of sludge treatment is
C A dumping
into sea
B incineration
C heat drying
D lagooning
22 Large particle collection in a sewage tank is termed as
C A setting
tank
B skimming tank
C deterrence tank
D grit chamber
23 Contact bed is permitted to stay empty for a period of
A A 6
hours
B 8 hours
C 10 hours
D 12 hours
24 Setting tank is used for
A A primary treatment
B secondary treatment
C advanced oxidation treatment
D ozonation
25 Colour odour temperature & turbidity test
A A physical
tests
B chemical tests
C biological tests
D trace element tests
26 A well constructed to
dispose the effluent from septic tank is
D A sump
well
B dry well
C wet well
D soakage pit
27 Ph value is measured by
A A potentiometer
B lactometer
C turbidity meter
D thermometer
28 A tank constructed to remove grease and soap etc present in
sewage is called
B A detritus
tank
B skimming tank
C grit chamber tank
D setting tank
29 Treatment of sewage is necessary to decompose the
B A in
organic matter
B organic matter
C solid matter
D all of these
30 Which of the following inhalation dissolved in the blood
hemoglobin more rapidly than oxygen.
B A sulphur
dioxide
B carbon monoxide
C ozone
D nitrous oxide
31 Smog is
B A a
natural phenomenon
B a combination of smoke and fog
C is colour les
D all of the above
32 The photochemical oxidants is
B A ozone
B nitrogen oxide
C hydrogen peroxide
D peroxyl acetyl nitrate (PAN)
33 Which of the following device is suitable for the removal of
gaseous pollutant
D A cyclone
separator
B electrostatic precipitators
C fabric filter
D wet scrubber
34 Air pollution from automobiles can be controlled by fitting.
C A cyclone
separator
B electrostatic precipitators
C catalytic convertor
D wet scrubber
35 Which gas exist in the highest concentration in the earth’s
atmosphere.
D A hydrocarbons
B ozone
C oxygen
D nitrogen
36 The following pollutant is not contained in the vehicular
emission.
B A lead
B ammonia
C carbon monoxide
D particulate matter
37 An air pollution control equipment is
A A inertial
separator
B telemeter
C ossilioscope
D all of these
38 Paper cardboard wooden pieces broken glass is termed as
A A rubbish
B garbage
C refuse
D ashes
39 Biodegradable waste which may create health problem is termed as
B A rubbish
B garbage
C refuse
D ashes
40 Which of the following material takes the longest time for
biodegradation.
C A cotton
B paper
C bone
D jute
41 Paints chemical light bulbs fluorescent tube spray cans
fertilizers are termed as
C A biodegradation
waste
B recycle able
C hazardous waste
D toxic waste
42 Burning of solid waste is a controlled environment is termed as
B A waste
bin
B incineration
C composting
D land filling
43 A general term used for solid wastes including rubbish and
garbage
D A garbage
B rubbish
C refuse
D sludge
44 Method of disposing off solid waste usually practiced in
Pakistan is
D A filth
depot
B dumping
C dust bin
D waste bin
45 The combined effect and scattering absorption of sound is called
D A noise
B sound pressure level
C absolute threshold of hearing
D attenuation
46 Method of noise control is
D A insulation
B use of new machinery
C use of earmuff
D all of these
47 Reducing the sound pressure with respect to a specific sound
source and receptor
A A sound
proofing
B damping
C absorption
D impact sound
48 Instrument used to measure the noise
A A dosimeter
B monometer
C lactometer
D U-frame
49 The aim of the fact is to decreased or eliminates the effect of
exterior noise
A A sound
proofing
B air born sound
C impact sound
D sound absorption
50 Typhoid cholera and
dysentery are diseases that are spread by
B A air
pollution
B water pollution
C land/soil pollution
D the use of pesticides
51 One of the following has a positive human influence on the
environment
D A deforestation
B overpopulation
C pollution
D conversation
52 Solid waste treatment means
D A neutralize
the acid
B degradation
C neutralize the alkali
D all of these
53 Main gas from land fill is
D A oxygen
B nitrogen
C carbon di oxide
D methane
54 Neutrient of plants ktane from soil
A A nitrogen
B oxygen
C carbon dioxide
D all of these
55 Bad effect of land pollution is
B A reduction
of nitrogen
B reduction of fertibility of soil
C increase in pH value
D increase in noise
56 A system receiving inputs and producing outputs without
undergoing any changes in size or function is said to be in _________
D A static
control
B environmental balance
C normal balance
D dynamic balance
57 The eutrophication that has taken place in the gulf of mexico
and other locations appears to be due to _________
D A global warming from human use of fossil fuels.
B pesticide use along.
C weather alone because it is only obvious in the summer.
D excess
nutrients from fertilizers.
58 Combining the oxygen with sulphur is called
A A oxidation
B combination
C reduction
D purification
59 The origin of all phosphorus in biological tissues is
C A volcanic activities
B atmospheric phosphorus gas
C sedimentary rock and fossil fuels
D phosphorus dissolved in the ocean and
taken up by shellfish
60 Nitrogen fixation is a process that makes nitrogen available to
plants by.
D A photosynthesis
B volcanic eruptions
C dissolving in freshwater and in the ocean
D mutualistic and free living bacteria
61 Water changes its state from gas to solid through
C A melting
B sublimation
C deposition
D condensation
62 By damming rivers and using method such as flood irrigation we
are
A A increasing overpopulation
B increasing the water table
C decreasing the water table
D decreasing transpiration
63 Rock that has under gone heat or pressure that causes it to
change from is called
D A conglomerate
B igneous
C sedimentary
D metamorphic
64 The process of subduction.
B A causes the formation of deep ocean trenches
B occurs when denser ocean crust slide beneath lighter continental crusts
C is caused by volcanoes
D occurs when plates apart
65 Water change its state from solid to gas through
B A melting
B sublimation
C deposition
D condensation
66 Is provided in plumbing of sewage so that to avoid entrance
noxion gas in the building.
B A seal
B trap
C chemicals
D cowl
67 If number of vent pipe are joined with waste or soil pipe then
combined vent pipe is known as
C A double
pipe
B waste pipe
C circuit venting
D trap
68 Slop of branch waste pipe in a single slop system should be
B A 1/10
to 1/20
B 1/12 to 1/48
C 1/50 to 1/100
D 1/100 to 1/200
69 Diameter of vent pipe is kept _______ of diameter of drain pipe.
C A ¼
B 1/3
C ½
D ¾
70 Part of sewer kept empty for ventilation purpose
A A 1/3
B 2/3
C 3/3
D none of these
71 Joint of a vent pipe with soil or waste pipe should be ________
cm
B A 10
B 15
C 20
D 30
72 Bleaching of paper is done by
A A chlorine
B fluorine
C iodine
D black liquor
73 Is the salient and significant pollution of fertilizer industry.
D A polluted
air
B polluted water
C solid waste
D noise pollution
74 Milk waste contain very little
C A water
B dissolved solids
C suspended solids
D cream
75 The standard limit of total dissolved solids in waste water of
dairy industry
D A 2
– 5 mg/l
B 5 – 7 mg/l
C 8 – 20 mg/l
D 10 – 100 mg/l
76 Main pollution created by dairy industry is
A A water
pollution
B air pollution
C land pollution
D all of these
77 Major pollutant in tannery effluent is
D A alum
B lime
C chrome
D sodium chloride
78 Chemical waste of tannery which may cause sewer breakage
D A H2SO4
B Hel
C Cao
D caco3
79 Major component of pollutant present in effluent of tannery is
A A sodium
chloride
B lime
C chrome
D alum
80 Objectionable occour is felt due to
A A hydrogen
sulphide
B rasin acid
C chlorine
D all of these
81 Sampling and monitoring of air water and soil samples according
to sampling rules helps in the identification.
A A pollution
B composition
C disposal
D pollution intensity study
82 The samples which are replica of the same sample is termed as
B A spike
sample
B split sample
C integrated sample
D field sample
83 The potent instrument of enforcement of Pakistan environmental
protection act is
B A environmental
tribunal
B environmental protection order
C administrative penalty
D pollution charge
84 To check the environmental pollution threat __________ is
enforced
A A environmental pollution control
B environmental impact assessment
C feasibility study
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