MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Chemical Engineering
Environmental Engineering In CE
Quiz 9
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
Which of the following is not a weightless pollutant?
SPM
Thermal pollution
Radioactive rays
Noise pollution
Q.2
The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is
Pipe vibrations
Cavitation
Boundary layer separation
Fluctuation in liquid flow
Q.3
Pick out the wrong statement.
A slight haze at the top of chimney indicates good combustion in the furnace
A bag filter incurs very small pressure drop and is very efficient for removal of sub-micronic dust particles from flue gases at very high temperature
Electrostatic precipitator is the most efficient dust collection equipment for removal of sub-micronic dust particles present in flue gas
None of these
Q.4
Thermal pollution due to excessive heat & temperature in the working place causes
Reduction in working efficiency of manpower
Fatigue
High breathing rate
All of the above
Q.5
Which of the following processes is involved in the biochemical treatment of sewage effluents?
Oxidation
Reduction
Dehydration
Fermentation
Q.6
Which of the following fine dust removal equipments is the most efficient?
Bag filter
Scrubber
Electrostatic precipitator
Cyclone separator
Q.7
When the concentration of SO₂ in air is greater than __________ ppm, it gives a pungent smell.
0.01
0.1
1
4
Q.8
Lagoons used for purification of polluted water
Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds
Use micro-organisms/bacteria in presence of dissolved oxygen
Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre
All of the above
Q.9
Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre)?
Lagooning
Activated carbon adsorption
Biological oxidation pond
Chemical coagulation
Q.10
Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants?
NOx
Hg
SO₂
F
Q.11
'Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a 'particulate'?
Dust & mists
Smoke & fumes
Photochemical smog & soot
None of these
Q.12
Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it.
Coal ash
Potassium cyanide
Ortho-xylene
None of these
Q.13
Removal of __________ results from the disinfection of water.
Turbidity
Odour
Hardness
Bacteria
Q.14
Ionisation potential employed in the industrial electrostatic precipitator is of the order of
30 to 70 kV DC
30 to 70 kV AC
230 V AC
230 V DC
Q.15
The biological decomposition of organic substances in wastes controlled conditions is called
Incineration
Biological oxidation
Composting
None of these
Q.16
Which of the following is not a secondary air pollutant?
Ozone
Photochemical smog
Sulphur dioxide
All of the above
Q.17
The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the
Ionosphere
Troposphere
Stratosphere
None of these
Q.18
Aerobic biological oxidation ponds used for the purification of polluted water
Destroys/removes pathogen from the sewage
Is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents
Destroys/removes pathogen much more effectively if the sewage is chlorinated
All of the above
Q.19
Presence of __________ bacteria in water causes disease like typhoid.
Aerobic
Pathogenic
Anaerobic
Non-pathogenic
Q.20
Brown spots in fabrics will be caused by washing with water containing large amount of .
Iron
Zinc
Iodine
Bromine
Q.21
Algae growth in water is controlled by
Deoxidation
Chlorination
Bleaching
Aeration
Q.22
Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for
Conversion of CO into CO₂ in the second compartment
Conversion of NOx into N₂ and NH₃ in the first compartment
Oxidation of unburnt hydrocarbon fuel in the second compartment
All of the above
Q.23
Arsenic pollutant is not generated in____industries.
Tanneries
Glass & ceramic
Beverages
Any of these
Q.24
Presence of bacteria in potable (drinking) water causes
Turbidity
Disease
Bad odour
Bad taste & colour
Q.25
A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the
Global warming
Green house
Atmospheric effect
Ionosphere
Q.26
Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)?
Benzopyrene
Peroxyacyl nitrate
Carbon monoxide
Sulphur dioxide
Q.27
Soluble silica present in boiler feed water can be removed by
Coagulation
Filtration
Anion exchanger
Preheating it
Q.28
The most commonly used chemical coagulant in water treatment is
Ferrous sulphate
Alum
Lime
Hydrazine
Q.29
Lagooning process is mainly a means of the
Sludge disposal
Reduction of excessive flow in sewers
Biological treatment of wastes
None of these
Q.30
Which of the following is the most major constituents of air pollutants?
Oxides of sulphur
Oxides of nitrogen
Carbon monoxide
Hydrogen sulphide
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