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Most viewed questions in Environmental Engineering
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81
GATE2016-2-50
A sample of water has been analyzed for common ions and results are presented in the form of a bar diagram as shown. The non-carbonate hardness (expressed in mg/L as $CaCO_3$) of the sample is $40$ $165$ $195$ $205$
A sample of water has been analyzed for common ions and results are presented in the form of a bar diagram as shown.The non-carbonate hardness (expressed in mg/L as $CaCO...
Milicevic3306
11.9k
points
Milicevic3306
asked
Mar 27, 2018
Water and Waste Water Quality and Treatment
gate2016-ce-2
water-and-waste-water-quality-and-treatment
environmental-engineering
basics-of-water-quality-standards
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–
0
votes
0
answers
82
GATE2015-2-21
$SO_2$ and $CO$ adversely affect oxygen carrying capacity of blood and functioning of lungs respectively functioning of the respiratory system and brain respectively functioning of the respiratory system and oxygen carrying capacity of blood respectively functioning of air passages and chest respectively
$SO_2$ and $CO$ adversely affectoxygen carrying capacity of blood and functioning of lungs respectivelyfunctioning of the respiratory system and brain respectivelyfunctio...
Milicevic3306
11.9k
points
Milicevic3306
asked
Mar 26, 2018
Air Pollution
gate2015-ce-2
air-pollution
environmental-engineering
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–
0
votes
0
answers
83
GATE2016-1-50
Effluent from an industry ‘A’ has a pH of $4.2$. The effluent from another industry ‘B’ has double the hydroxyl (OH) ion concentration than the effluent from industry ‘A’. pH of effluent from the industry ‘B’ will be ______
Effluent from an industry ‘A’ has a pH of $4.2$. The effluent from another industry ‘B’ has double the hydroxyl (OH) ion concentration than the effluent from indu...
Milicevic3306
11.9k
points
Milicevic3306
asked
Mar 27, 2018
Water and Waste Water Quality and Treatment
gate2016-ce-1
numerical-answers
water-and-waste-water-quality-and-treatment
environmental-engineering
effluent-discharge-standards
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–
0
votes
0
answers
84
GATE2020 CE-2-54
A sample of water contains an organic compound $C_8H_{16}O_8$ at a concentration of $10^{-3}\: \text{mol/litre}$. Given that the atomic weight of $C = 12\: \text{g/mol}, H = 1\: \text{g/mol}$, and $O = 16\: \text{g/mol}$, the theoretical oxygen demand of water (in $g$ of $O_2$ per litre, round off to two decimal places), is ________.
A sample of water contains an organic compound $C_8H_{16}O_8$ at a concentration of $10^{-3}\: \text{mol/litre}$. Given that the atomic weight of $C = 12\: \text{g/mol}, ...
go_editor
5.3k
points
go_editor
asked
Feb 13, 2020
Water and Waste Water Quality and Treatment
gate2020-ce-2
numerical-answers
water-and-waste-water
physical-chemical-and-biological-parameters
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–
0
votes
0
answers
85
GATE2015-2-48
A water treatment plant of capacity, $1 \: m^3/s$ has filter boxed of dimensions $6 \; m \times 10 \: m$. Loading rate to the filters is $120 \: m^3/day/m^2$. When two of the filters are out of service for back washing, the loading rate (in $m^3/day/m^2$) is _________.
A water treatment plant of capacity, $1 \: m^3/s$ has filter boxed of dimensions $6 \; m \times 10 \: m$. Loading rate to the filters is $120 \: m^3/day/m^2$. When two of...
Milicevic3306
11.9k
points
Milicevic3306
asked
Mar 26, 2018
Water and Waste Water Quality and Treatment
gate2015-ce-2
numerical-answers
water-and-waste-water
environmental-engineering
water-treatment-plant
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–
0
votes
0
answers
86
GATE2015-2-49
Ultimate BOD of a river water sample is $20$ mg/L. BOD rate constant (natural log) is $0.15 \: day^{-1}$. The respective values of BOD (in $\%$) exerted and remaining after $7$ days are: $45$ and $55$ $55$ and $45$ $65$ and $35$ $75$ and $25$
Ultimate BOD of a river water sample is $20$ mg/L. BOD rate constant (natural log) is $0.15 \: day^{-1}$. The respective values of BOD (in $\%$) exerted and remaining aft...
Milicevic3306
11.9k
points
Milicevic3306
asked
Mar 26, 2018
Environmental Engineering
gate2015-ce-2
environmental-engineering
bod-rate-constant
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–
0
votes
0
answers
87
GATE2014-2-22
The two air pollution control devices that are usually used to remove very fine particles from the flue gas are Cyclone and Venturi Scrubber Cyclone and Packed Scrubber Electrostatic Precipitator and Fabric Filter Settling Chamber and Tray Scrubber
The two air pollution control devices that are usually used to remove very fine particles from the flue gas areCyclone and Venturi ScrubberCyclone and Packed ScrubberElec...
Milicevic3306
11.9k
points
Milicevic3306
asked
Mar 25, 2018
Air Pollution
gate2014-ce-2
air-pollution
environmental-engineering
air-pollution-control-devices
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–
0
votes
0
answers
88
GATE Civil 2021 Set 1 | Question: 34
Ammonia nitrogen is present in a given wastewater sample as the ammonium ion $\text({NH}_{4}$^{+})$ and ammonia $\text({NH}_{3})$. If $ ... _{3}$ will be found in equal measures At $\text{pH}$ $7.0$, $\text{NH}_{4}$^{+}$ will be predominant
Ammonia nitrogen is present in a given wastewater sample as the ammonium ion $\text({NH}_{4}$$^{+})$ and ammonia $\text({NH}_{3})$. If $\text{pH}$ is the only deciding fa...
Arjun
13.0k
points
Arjun
asked
Feb 19, 2021
Water and Waste Water Quality and Treatment
gatecivil-2021-set1
chemical-biological-parameters
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–
0
votes
0
answers
89
GATE2014-1-48
For a sample water with the ionic composition shown in the figure below, the carbonate and non-carbonate hardness concentrations (in mg/l as $CaCO_3$), respectively are: $200$ and $50$ $175$ and $75$ $75$ and $175$ $50$ and $200$
For a sample water with the ionic composition shown in the figure below, the carbonate and non-carbonate hardness concentrations (in mg/l as $CaCO_3$), respectively are:$...
Milicevic3306
11.9k
points
Milicevic3306
asked
Mar 25, 2018
Water and Waste Water Quality and Treatment
gate2014-ce-1
water-and-waste-water-quality-and-treatment
environmental-engineering
basics-of-water-quality-standards
chemical-parameters
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–
0
votes
0
answers
90
GATE2016-2-52
For a wastewater sample, the three-day biochemical oxygen demand at incubation temperature of $20^{\circ}C$ (BOD$_{\text{3day}, 20^{\circ}C}$) is estimated as $200 mg/L$ ... in mg/L) of the wastewater at incubation temperature of $20^{\circ}C$ (BOD$_{\text{5day}, 20^{\circ}C}$) would be ________
For a wastewater sample, the three-day biochemical oxygen demand at incubation temperature of $20^{\circ}C$ (BOD$_{\text{3day}, 20^{\circ}C}$) is estimated as $200 mg/L$....
Milicevic3306
11.9k
points
Milicevic3306
asked
Mar 27, 2018
Water and Waste Water Quality and Treatment
gate2016-ce-2
numerical-answers
water-and-waste-water-quality-and-treatment
environmental-engineering
wastewater
incubation-temperature
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–
0
votes
0
answers
91
GATE2020-CE-1-54
A stream with a flow rate of $5\:m^3/s$ is having an ultimate BOD of $30\:mg/litre$. A wastewater discharge of $0.20\:m^3/s$ having $BOD_5\:\text{of}\:500\:mg/litre$ joins the stream at a location and instantaneously gets mixed up completely. The ... $e$). The BOD (in mg/litre, round off to two decimal places) remaining at $3\:km$ downstream from the mixing location, is __________
A stream with a flow rate of $5\:m^3/s$ is having an ultimate BOD of $30\:mg/litre$. A wastewater discharge of $0.20\:m^3/s$ having $BOD_5\:\text{of}\:500\:mg/litre$ join...
go_editor
5.3k
points
go_editor
asked
Feb 27, 2020
Water and Waste Water Quality and Treatment
gate2020-ce-1
water-and-waste-water
numerical-answers
wastewater-discharge
bod
+
–
0
votes
0
answers
92
GATE2016-1-17
Pre-cursors to photochemical oxidants are $NO_X, \: VOC$s and sunlight $SO_2, \: CO_2$ and sunlight $H_2S, \: CO$ and sunlight $SO_2, \: NH_3$ and sunlight
Pre-cursors to photochemical oxidants are$NO_X, \: VOC$s and sunlight$SO_2, \: CO_2$ and sunlight$H_2S, \: CO$ and sunlight$SO_2, \: NH_3$ and sunlight
Milicevic3306
11.9k
points
Milicevic3306
asked
Mar 27, 2018
Air Pollution
gate2016-ce-1
environmental-engineering
air-quality-standards-index-and-limits
air-pollution
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–
0
votes
0
answers
93
GATE2014-1-22
The amount of $CO_2$ generated (in kg) while completely oxidizing one kg of $CH_4$ to the end products is _________
The amount of $CO_2$ generated (in kg) while completely oxidizing one kg of $CH_4$ to the end products is _________
Milicevic3306
11.9k
points
Milicevic3306
asked
Mar 25, 2018
Environmental Engineering
gate2014-ce-1
numerical-answers
environmental-engineering
+
–
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