MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Chemical Engineering
Environmental Engineering In CE
Quiz 5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Q.1
A shallow pond in which the sewage is retained and biologically treated is called
Oxidation
Imhoff tank
Lagoon
Skimming tank
Q.2
From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm.
1
5
50
500
Q.3
Presence of soluble organics in polluted water causes
Undesirable plants growth
Depletion of oxygen
Fire hazards
Explosion hazards
Q.4
High concentration of carcinogenic hydrocarbon pollutants in atmospheric air causes
Cancer
Silicosis
Respiratory disease (e.g., asthma)
Reduced crop yield
Q.5
TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm.
5
100
1000
2000
Q.6
Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of
Ozone and iodine
Chlorine or its compounds
Ultraviolet light for irradiation of water
All of the above
Q.7
The permissible color for domestic water supply is __________ ppm.
1
20
100
1000
Q.8
Reingleman chart is used for the evaluation of __________ pollution.
Air
Water
Noise
Radioactive
Q.9
Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm).
Highly
Moderately
Extremely
Very extremely
Q.10
Inhalation of silica dust causes a disease called
Bronchitis
Silicosis
Pneumoconiosis
None of these
Q.11
Oil and grease present in an emulsified state in waste water discharged from industries can be removed by
Biological oxidation
Skimming off
Settling out using chemical reagents
Chlorination
Q.12
Which of the following is a manmade source of air pollution?
Automobile exhaust
Forest fire
Bacterial action in soil and swamp areas
All of the above
Q.13
Main pollutants released from petroleum refineries is
CO, SO₂ & H₂S
CO₂, NO & SO₃
CO₂, H₂S & NO₂
SO₃, NO₂ & CO₂
Q.14
Which is the most practical and economical method for removal of suspended solid matter from polluted water?
Sedimentation
Skimming off
Chlorination
Biological oxidation
Q.15
As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m³.(μg-microgram)
10
90
800
750
Q.16
Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air.
Hydrocarbons
Hydrogen flouride
Hydrogen sulphides
Nitrogen dioxide
Q.17
Most efficient and suitable dust removal equipment for removal of flyash from flue gas in a thermal power plant is the
Gravity settling chamber
Cyclone separator
Electrostatic precipitator
Bag filter
Q.18
Foaming and priming in boiler operation can be reduced by reduction in __________ in feed water.
Turbidity
Color (Hazen)
Total solids
All of the above
Q.19
Noise pollution level in a chemical plant is expressed in
Roentgen
Decibel
Hertz
None of these
Q.20
White smoke coming out of the chimney of a furnace indicates the use of
Low excess air
Very high excess air
Gaseous fuel in the furnace
Liquid fuel in the furnace
Q.21
Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur?
Thermosphere
Troposphere
Stratosphere
None of these
Q.22
Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm.
<1
10-100
100-200
100-1000
Q.23
80% less than 200 mesh size particles are called
Smoke
Powder
Grit
Aggregates
Q.24
Removal of __________ is accomplished by aeration of water.
Dissolved gases
Suspended solids
Dissolved solids
None of these
Q.25
Maximum permissible limit of mercury in human blood is __________ micrograms/100 c.c.
1
7
19
82
Q.26
5-200 μm size particles are called
Colloids or aerosols
Powder
Dust
Smoke
Q.27
Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes
Fire hazards
Explosion hazards
Persistent foam
Depletion of dissolved oxygen
Q.28
During which of the following operating conditions of an automobile, carbon monoxide content in the exhaust gas is maximum?
Idle running
Acceleration
Cruising
Deaccelaration
Q.29
Ethanolamine is an absorbant used for the removal of __________ from air/gas.
HF
SO₂
H₂S
Both B & C
Q.30
The weakest sound that can be heard by a person in a quiet environment is equivalent to __________ decibel.
1
5
10
20
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page