Equilibrium and Kinetics Adsorption of Cadmium and Lead Ions from Aqueous Sol...theijes
Sourcing cheap adsorbents for the treatment of waste water is imperative for local environments. The adsorption of cadmium (Cd) and lead (Pb) from aqueous solution onto bamboo activated carbon prepared by chemical activation with ZnCl2 was investigated. The unwashed chemical activated bamboo carbon (UCABC) achieved up to 87.81% and 96.45% removal of Cd and Pb at pH-5 and 11, respectively. Removal equilibrium was attained within 1hr and 2.5hrs for Cd and Pb, respectively. The Cd and Pb adsorption increased with adsorbent dosage decrease while removal rate (%) increased with Cd and Pb concentration. Adsorption isotherm of Cd and Pb onto UCABC was determined and correlated with four isotherm models (Langmuir, Freundlich, Temkin and Hills). The equilibrium data fitted into Freundlich Cd (R2 = 0.9873, SSE = 0.045), Pb (R2 =0.9903, SSE = 0.051); Temkin Cd (R2 =0.9730, SSE = 0.052), Pb (R2 = 0.9079, SSE = 0.056); Hills Cd (R2 = 0.9961, SSE = 0.048), Pb (R2.= 0.9183, SSE = 0.053) and Langmuir Cd (R2 = 0.9653, SSE = 0.302), Pb (R2 = 0.9899, SSE = 0.136) isotherms. The Freundlich fitting showed isotherm adsorption capacity constants Kf = 7.843 and 5.098 (mg/g) for Cd and Pb, respectively. Furthermore, their adsorption kinetics correlated with the Pseudo-first order, Pseudo-second order and Intra-particle diffusion models and could be best described by the Pseudo-second order equation, suggesting chemisorptions as the limiting process. This study demonstrated that the UCABC can remove Cd2+ and Pb+ ions from aqueous solution to avert expensive commercial adsorbents
Densities and Refractive Indices of solutions of
potassium bromate (KBrO3) have been studied in water and
0.1%, 0.2%, 0.3%, 0.4% and 0.5% (w/v) aqueous solution of
KCl with temperature in the range T = 298.15˚K- 313.15˚K. The
data obtained is utilized to determine Specific Refraction (RD)
and Molar Refraction (RM) of solutions. The values of Refractive
indices, Molar Refraction (RM) and Molar Polarisability (α)
constant are found to be decreased with decreasing concentration
of solute in solvent and these results are also interpreted in terms
of interaction in salt solution. It has been verified that Molar
Refraction is additive and constitutive property.
Study of abiotic factors across the brahmaputra belt in relation to its suita...eSAT Journals
Abstract
A healthy ecosystem is a result of balanced interaction between biotic and abiotic factors. Water temperature, pH, DO, FCO2, TA, TH etc are the most important abiotic factors influencing the physico-chemical and biological events of water body (Rahman et al., 2008). All species have their own optimal range for these abiotic parameters. In relation to aquatic life, there maturation time is also dependent on these parameters. These factors have great influence on aquatic life (DuttaMunshi and DuttaMunshi, 1995). This paper deals with the observation of fluctuation of these abiotic factors across the Brahmaputra Belt and its relation with aquatic life, mostly fishes.
Keywords: Water temperature, pH, DO, FCO2, TA, TH etc…
Equilibrium and Kinetics Adsorption of Cadmium and Lead Ions from Aqueous Sol...theijes
Sourcing cheap adsorbents for the treatment of waste water is imperative for local environments. The adsorption of cadmium (Cd) and lead (Pb) from aqueous solution onto bamboo activated carbon prepared by chemical activation with ZnCl2 was investigated. The unwashed chemical activated bamboo carbon (UCABC) achieved up to 87.81% and 96.45% removal of Cd and Pb at pH-5 and 11, respectively. Removal equilibrium was attained within 1hr and 2.5hrs for Cd and Pb, respectively. The Cd and Pb adsorption increased with adsorbent dosage decrease while removal rate (%) increased with Cd and Pb concentration. Adsorption isotherm of Cd and Pb onto UCABC was determined and correlated with four isotherm models (Langmuir, Freundlich, Temkin and Hills). The equilibrium data fitted into Freundlich Cd (R2 = 0.9873, SSE = 0.045), Pb (R2 =0.9903, SSE = 0.051); Temkin Cd (R2 =0.9730, SSE = 0.052), Pb (R2 = 0.9079, SSE = 0.056); Hills Cd (R2 = 0.9961, SSE = 0.048), Pb (R2.= 0.9183, SSE = 0.053) and Langmuir Cd (R2 = 0.9653, SSE = 0.302), Pb (R2 = 0.9899, SSE = 0.136) isotherms. The Freundlich fitting showed isotherm adsorption capacity constants Kf = 7.843 and 5.098 (mg/g) for Cd and Pb, respectively. Furthermore, their adsorption kinetics correlated with the Pseudo-first order, Pseudo-second order and Intra-particle diffusion models and could be best described by the Pseudo-second order equation, suggesting chemisorptions as the limiting process. This study demonstrated that the UCABC can remove Cd2+ and Pb+ ions from aqueous solution to avert expensive commercial adsorbents
Densities and Refractive Indices of solutions of
potassium bromate (KBrO3) have been studied in water and
0.1%, 0.2%, 0.3%, 0.4% and 0.5% (w/v) aqueous solution of
KCl with temperature in the range T = 298.15˚K- 313.15˚K. The
data obtained is utilized to determine Specific Refraction (RD)
and Molar Refraction (RM) of solutions. The values of Refractive
indices, Molar Refraction (RM) and Molar Polarisability (α)
constant are found to be decreased with decreasing concentration
of solute in solvent and these results are also interpreted in terms
of interaction in salt solution. It has been verified that Molar
Refraction is additive and constitutive property.
Study of abiotic factors across the brahmaputra belt in relation to its suita...eSAT Journals
Abstract
A healthy ecosystem is a result of balanced interaction between biotic and abiotic factors. Water temperature, pH, DO, FCO2, TA, TH etc are the most important abiotic factors influencing the physico-chemical and biological events of water body (Rahman et al., 2008). All species have their own optimal range for these abiotic parameters. In relation to aquatic life, there maturation time is also dependent on these parameters. These factors have great influence on aquatic life (DuttaMunshi and DuttaMunshi, 1995). This paper deals with the observation of fluctuation of these abiotic factors across the Brahmaputra Belt and its relation with aquatic life, mostly fishes.
Keywords: Water temperature, pH, DO, FCO2, TA, TH etc…
Determination of Arsenic, Chromium,Selenium and Zinc in fish samples of Bangladesh has been described and compared with the results published elsewhere.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Determination of p h of waste water sample .....................................Hafiz M Waseem
ecologyDetermination of pH of Waste Water Sample ..................................................... 4
Determination Dissolved Oxygen within Water ................................................... 5
Adaptive Features of Animals in Relation to Food and Environment .................. 7
Study the Plant Population Density ................................................................... 10
Experimental Design and Approaches to Ecological Research ........................ 12
Determination of Arsenic, Chromium,Selenium and Zinc in fish samples of Bangladesh has been described and compared with the results published elsewhere.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Determination of p h of waste water sample .....................................Hafiz M Waseem
ecologyDetermination of pH of Waste Water Sample ..................................................... 4
Determination Dissolved Oxygen within Water ................................................... 5
Adaptive Features of Animals in Relation to Food and Environment .................. 7
Study the Plant Population Density ................................................................... 10
Experimental Design and Approaches to Ecological Research ........................ 12
9th science sample pape for summative assessment-1APEX INSTITUTE
APEX INSTITUTE has been established with sincere and positive resolve to do something rewarding for ENGG. / PRE-MEDICAL aspirants. For this the APEX INSTITUTE has been instituted to provide a relentlessly motivating and competitive atmosphere.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
1. POST GRADUATE COMMON ENTRANCE TEST-2017
DATE and TIME COURSE SUBJECT
2.30 p.m. to 4.30 p.m.
01-07-2017 ENVIRONMENTAL
ME/M.Tech/M.Arch/
courses offered by
VTU/UVCE/UBDTCE
ENGINEERING
MAXIMUM MARKS TOTAL DURATION MAXIMUM TIME FOR ANSWERING
100 150 Minutes 120 Minutes
MENTION YOUR PGCET NO. QUESTION BOOKLET DETAILS
VERSION CODE SERIAL NUMBER
A - 1 109023
DOs :
1. Check whether the PGCET No. has been entered and shaded in the respective circles on the OMR answer sheet.
2. Ensure whether the circles corresponding to course and the specific branch have been shaded on the OMR
answer sheet.
3. This Question Booklet is issued to you by the invigilator after the 2"d Bell i.e., after 2.25 p.m.
4. The Serial Number of this question booklet should be entered and the respective circles should also be shaded
completely on the OMR answer sheet.
5. The Version Code of this question booklet should be entered on the OMR answer sheet and the respective circles
should also be shaded completely on the OMR answer sheet.
6. Compulsorily sign at the bottom portion of the OMR answer sheet in the space provided.
DON 'Ts :
1. THE TIMING AND MARKS PRINTED ON THE OMR ANSWER SHEET SHOULD NOT BE
DAMAGED / MUTILATED / SPOILED.
2. The 3" Bell rings at 2.30 p.m., till then;
• Do not remove the paper seal polythene hag of this question booklet.
• Do not look inside this question booklet.
• Do not start answering on the OMR answer sheet.
IMPORTANT INSTRUCTIONS TO CANDIDATES
1. This question booklet contains 75 (items) questions and each question will have one statement and four answers.
(Four different options / responses.) .
2. After the 3' Bell is rung at 2.30 p.m., remove the paper seal / polythene bag of this question booklet and check
that this booklet does not have any unprinted or torn or missing pages or items etc., if so, get it replaced by a
complete test booklet. Read each item and start answering on the OMR answer sheet.
3. During the subsequent 120 minutes:
• Read each question (item) carefully.
• Choose one correct answer from out of the four available responses (options / choices) given under
each question / item. En case you feel that there is more than one correct response, mark the response
which you consider the best. In any case, choose only one response for each item.
• Completely darken / shade the relevant circle with a BLUE OR BLACK INK BALL POINT PEN
a°ainst the uestion number on the OMR answer sheet.
Correct Method of shading the circle on the OMR answer sheet is as shown below :
4. Use the space provided on each page of the question booklet for Rough Work. Do not use the OMR answer sheet
for the same.
5. After the last Bell is rung at 4.30 pm, stop marking on the OMR answer sheet and affix your left hand thumb
impression on the OMR answer sheet as per the instructions.
6. Handover the OMR ANSWER SHEET to the room invigilator as it is.
7. After separating the top sheet (KEA copy), the invigilator will return the bottom sheet replica (Candidate's copy)
to you to carry'home for self-evaluation.
8. Preserve the replica of the OMR answer sheet for a minimum period of ONE year.
9. Only Non-programmable calculators are allowed.
Marks Distribution
PART-1 : 50 QUESTIONS CARRY ONE MARK EACH (1 TO 50)
PART-2 : 25 QUESTIONS CARRY TWO MARKS EACH (51 TO 75)
EN-Al I II111111 11111
2. ENVIRONMENTAL ENGINEERING
PART - I
Each question carries one mark. (50 x 1 = 50)
i. Alkalinity is defined as the quantity of
ions in water that will reacts to
(A) neutralise hydrogen ion
(B) acidify hydrogen ions
(C) neutralise oxygen ions
(D) acidify oxygen ions
2. Noticeable discoloration of teeth when
fluoride concentration in drinking
water exceeds 1.5 ing/lt is called
(A) Leaching
(B) Bleaching
(C) Mottling
(D) Hardness
4. The process of movement of nutrients
from the soil by the acid rain is called
(A) Transpiration
(B) Evapotranspiration
(C) Run off
(D) Infiltration
5. The ability of a community to
establish itself in a different
habitat/area is also a form of
(A) Eutrophication
(B) Ecological resilince
(C) Trophic level
(D) Food web
6. Paramxcovirus causes measles and it
is
(A) Water borne
(B) Air borne
(C) Chemical borne
(D) Pesticide borne
3. During waste water treatment
protozoan consume
(A) Suspended bacteria
(B) Cysts of amoeba
(C) Mycelium of fungi
(D) Calcium and magnesium
Space For Rough Work
EN 3 A-1
3. 7. Earth day is held every year on
(A) June 5th
(B) November 73rd
(C) April
(D) January 28th
8. Waterlogging is a phenomena in
which
(A) Crop patterns arc rotated
(B) Soil root zones becomes
saturated due to over irrigation
(C) Erosion of soil
(D) Organic farming
9. Plants can take up nitrogen in two
forms they are
(A) NH +4 and NO
(B) NH and NO
,
(C) NO1
(D) NO,
10. A common impurity that impair the
aesthetic quality of water is
(A) 1-17S
(B) Calcium
(C) Fluoride
(D) pH
11. Bacteriophage is used to monitor
(A) COD
(B) Microbial pollution
(C) Fluoride
(D) Eutrophication
12. Red tides are produced by
(A) Algae
(B) Fungi
(C) Virus
(D) Bacteria
13. In a static fluid, the pressure at any
given point is
(A) zero
(B) different in different directions
(C) the same in all directions
(D) acting in only one direction
Space For Rough Work
A-1 4 EN
4. 14. Viscosity is the property of a fluid and
in the SI system, it has the units of
(A) poise
(B) Stoke (cm-/s)
(C) gm/(cm.$)
(D) Pa-s (N.S/m2)
15. For laminar flow in a circular pipe,
average velocity is
(A) one third of the maximum
velocity
(B) equal to maximum velocity
(C) half of the maximum velocity
(D) three fourth of maximum
velocity
16. The friction loss from a sudden
contraction of the cross-section of the
pipe is proportional to
(A) Pressure head
(B) Gravity head
(C) Velocity head
(D) Potential head
17. Diaphragm pump is an example of
(A) Centrifugal pump
(B) Reciprocating pump
(C) Gear pump
(D) Mono pump
18. The equation for steady state yield
from a tube-well was first developed
by
(A) Darcy
(B) Jacob
(C) Chow
(D) Dupuit
19. S-curve hydrograph is used
(A) to estimate the peak flood from a
basin due to a given storm.
(B) to develop synthetic unit
hydrogrpah.
(C) to convert the unit hydrograph of
given duration into a unit
hydrograph of any other
duration.
(D) to estimate the infiltration losses.
Space For Rough Work
EN 5 A-1
5. 23. F/M is accurately given by
(A)
BOD
Total solids
(B)
COD
MLSS
(C)
MLVSS
BOD
20. Which one of the following formations
does not contain ground water ?
(A) Aquifer
(B) Aquitard
(C) Aquifuge
(D) Aquicludc
(D) BUD
MLSS
21. The chemical compound which is
itenerally used to reduce the
evaporation from water bodies is
(A) D.D.T.D.
(B) Alum
(C) Potassium dichromate
(D) Acetyl alcohol
11. Depth of standard rate of trickling
filter is
(A) 0.5 to 1.0 m
(B) 1 to 2.0 in
(C) 1.5 to 4.8 m
(D) 1 to 8.0 in
24. Organic loading of ASP is
(A) 100 to 200 g/m3/day
(B) 200 to 400 g/m3/day
(C) 500 to 650 g/m3/day
(D) 650 to 800 glm3iday
25. Sludge from a Biological treatment is
(A) Harmless inorganic sediment.
(B) Rich in organic matter and
Bacteria.
(C) Rich in organic matter and
micro-organisms.
(D) Rich in Bigger inert solids.
Space For Rough Work
A-1 6 EN
6. 26. Waters from the following source is
likely to be hard :
(A) Lake
(B) Pond
(C) Deep well
(D) River
27. Design period mainly depends on
(A) pecentage interest at which the
loan is taken.
(B) capacity of the municipality to
repay.
(C) rate of growth of population.
(D) maintaining of fittings.
28. The average domestic demand of
water for an Indian city is
(A) 2701pcd
(B) 400 Ipcd
(C) 700 Iped
(D) 135 1pcd
29. For an old city with constraints for
growth the best method of forecasting
future population is
(A) Incremental increase method
(B) Geometrical increase method
(C) Logestic curve method
(D) Arithmetical increase method
30. The usual amount of residual chlorine
required after 10 minutes of contact is
(A) 0.1 mg//
(B) 0.2 mg//
(C) 1 mg//
(D) more than 3 mgil
31. Free chlorine residual means
(A) HOC1 + HCI
(B) HC1 + OCI
(C) HOCI + 0C1
(D) Chloramines
Space For Rough Work
EN 7 A-1
7. 32. A lamp hole is helpful in
(A) illuminating sewer line
(B) cleaning sewer line
(C) repairing
(D) testing sewers
33. In General Imperviousness of any
catchment shall be between
(A) 1% to 95%
(B) 0.1% to 10%
(C) 0.01% to 95%
(D) 0.0001% to 100%
34. Moisture content of solid waste is
found in
(A) Proximate analysis
(B) Ultimate analysis
(C) Potential analysis
(D) Carbon analysis
35. Energy content of a solid waste is
expressed in
(A) kJ
(B) kJ.kg
(C) kJ/kg
(D) kg
36. OTEC means
(A) Optimal Thermal Energy
Conversion
(B) Ocean Thermal Energy
Conversion
(C) Ocean Tidal Energy Conversion
(D) Optimal Tidal Energy
Conversion
37. Mining acitvity
(A) Devastates ecosystem
(B) Creates biodiversity
(C) Recycles solid waste
(D) Controls pollution
38. Under superadiabatic conditions, with
light to moderate wind speed, on a hot
summer afternoon when large scale
thermal eddies are present, the plume
behaviour would be
(A) Coning
(B) Looping
(C) Fanning
(D) Trapping
Space For Rough Work
A-1 8 EN
8. 39. The air sample collected by filling an
evaculated flask or an inflotable bag is
called
(A) Freeze out sampling
(B) Grab sampling
(C) Coarse sampling
(D) Grannular sampling
40. Formation of ozone layer is explained
by
(A) Rosenmund's reaction
(B) Chapman's reaction
(C) Henderson's reaction
(D) Perkin's reaction
41. Estimated residence time of SO, in a
dry atmosphere is
42. Widely used device for controlling
particulate emissions at industrial
installations ranging from power
plants, cement and paper mills to oil
refineries are
(A) Catalytic convertors
(B) Electrostatic precipitators
(C) Cyclone separators
(D) Settling chambers
43. Rate of oxidation of organic matter
can be approximated as
(A) First order reaction
(B) Second order reaction
(C) Third order reaction
(D) Zero order reaction
44. Fick's law can be represented as
(A) JA
dt
(B) JA =
dc
At
(A) 4 days cbc
(B) 7 days (C) -DABaCAaz
(C) 8 months
(D) JA — aCA
(D) 3 years aZ
Space For Rough Work
EN 9 A-1
9. 45. The ditThrence between the saturation
concentration of DO(CS) and the
concentration actually present in water
(CL) is called as
(A) Additional DO
(B) Excess DO
(C) Ultimate DO
(D) 1)0 deficit
46. The record of repeated observations
made at a particular location in the
environment is called
(A) Observations
(B) Time series
(C) Polynomial series
(D) Comprehensive
47. The term EIA came into existence
through NEPA on
(A) 20 Jan 1972
(B) 10 Jan 1980
(C) I Jan 1970
(D) 15 Aug 1980
48. Most air pollution episodes have
occurred in the season
(A) Rainy
(B) Summer
(C) Winter
(D) August to September
49. The analytical function not associated
with environmental impact assessment
include
(A) Prediction
(B) Defining scope of EIA
(C) Impact evaluation and analysis
(D) Recycle and Reuse
50. In comprehensive EIA, the radius of
influence of the project on the
environment is
(A) 100 kin
(B) 25 km
(C) 10 km
(D) 500 km
Space For Rough Work
A-I 10 EN
10. PART - 2
Each question carries two marks. (25 x 2 = 50)
51. What is the suitable diameter for the
pores in a filter used for concentrating
virus from a 100 ml water sample ?
54. The head loss due to friction measured
in terms of metre(m) of a flowing fluid
is given by
(A) 10 pm
(B) 100 psn
(C) 10 nm
(D) 100 nm
411 u2
(A)
= 2gD
(B) AE, =
52. Nobel Peace Price (2004) for
contribution to sustainable
development was awarded to
(A) Madhav Gadgil
(B) Wangari Maathai
(C) Medha Patkar
(D) Sunderlal Bahuguna
53. Reynold's number is the ratio of
(A) Gravity three to pressure force
(B) Inertia force to the viscous force
(C) Pressure force to shear force
(D) Gravity force to viscous force
(C) h t, -=
(D) he, =
55. Overall efficiency of a pump is
defined as ratio of
(A) pressure to head
(B) useful work to pressure
(C) hydraulic work performed to the
actual work input
(D) actual work input to velocity
AP
2gD
4L2
2uD
Space For Rough Work
EN 11 A-1
11. 56. Water of density 1000 kg/m3 and
viscosity 0.0008 (N.S)/m2 is pumped
at a rate of 1000 cm.'Is through a
25 mm i.d. pipe. Reynold's number of
water will be
(A) 2246
(B) 63662
(C) 5001
(D) 2x 104
57. If the gauge pressure is 32424 N/m2,
the absolute pressure is equal to
(A) 1421 N/m2
(B) 22 x 10' N/m2
(C) 44313 N/m2
(D) 133749 N/m2
58. Discharge through a rectangular notch
varies as
(A) H9-5
(B) H2.5
(C) H1 '
(D) 1-1().5
59. A catchment of 20.000 m3 has runoff
co-efficient 0.4 and received rainfall at
an uniform rate of 5 mm/hour, what is
the maximum rate of runoff?
(A) 0.011 m3/s
(B) 2 m3/s
(C) 1.4 m3/s
(D) 2.5 m'is
60. An isolated 4h storm occured over a
catchment as follows :
Time
H
1r
1st hr I '-)11 hr
I
3rd hr!4th hr.
Rainfall (mm) 9 28 12
1
; 7
The index for the catchment is
10 numb. The estimated run-off depth
from the catchment due to the above
storm is
(A) 10 mm
(B) 20 mm
(C) 23 mm
(D) 16 mm
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A-1 12 EN
12. 61. In the application of rational formula
for computing the design discharge,
the rainfall duration is stipulated as the
time of concentration because
(Q) This leads to the largest possible
rainfall intensity.
(B) This leads to the smallest
possible rainfall intensity.
(C) The time of concentration is the
smallest rainfall duration for
which the rational formula is
applicable.
(D) The time of concentration is the
largest rainfall duration for
which the rational formula is
applicable.
62. The vertical hydraulic conductivity of the
top soil at certain stage is 0.2 cm/h a storm
of intensity 0.5 cm/h occurs over the soil
for an indefinite period. Assuming the
surface drainage to be adequate, the
infiltration rate after the storm has lasted
for a very long time, shall be
(A) 0.2 cm/h
(B) smaller than 0.2 em/h
(C) 0.5 cm/h
(D) between 0.2 and 0.5 cm/h
63. The detention period for a standard
rate digester is
(A) 10 to 20 days
(B) 20 to 30 days
(C) 30 to 90 days
(D) 90 to 180 days
64. The last trap provided in a house
drainage system is
(A) Q-trap
(B) Floor trap
(C) Nahani trap
(D) Interception trap
65. Design a circular settling tank unit
for a primary treatment of sewage at
12 million Its/day. Assume suitable
values of detention period and surface
loading.
(A) Settling tank with 18.7 m dia and
3.2 in water depth
(B) Settling tank with 19.6 in dia and
3.2 m water depth
(C) Settling tank with 20.7 in dia and
3.2 m water depth
(D) Settling tank with 20.99 m dia
and 3.2 m water depth
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EN 13 A-1
13. 66. Amount of return sludge in
conventional ASP is
(A) 10 — 20%
(B) 25 — 50%
(C) 50 — 100%
(D) 100 -- 300%
67. If a sample is heated to 600 °C the
fraction getting evaporated represents
(A) fixed solids
(B) volatile solids
(C) total dissolved solids
(D) settleble solids
69. Zero hardness of water is achieved
by
(A) Lime soda process
(B) iuri exchangL:
(C) Excess lime treatment
(D) Excess alum and lime treatment
70. What is the density of the sludge
removed from the aeration tank ?
(A) 990 kinim-1
(B) 1000 kg/m3
(C) 1011 kg/m3
(D) 1022 kg/m3
71. Permissible standards of air quality
fixed in India for residential areas for
(D) Suspended and colloidal solids
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68. Volatile solids represents
(A) Organic dissolved solid
(B) Inorganic dissolved solid
(C) Total dissolved solid
SPM, SO,, NO & CO in µg/m-1
respectively are
(A) 500, 120, 5000, 6000
(B) 160, 80, 100, 1000
(C) 100, 30, 30, 1000
(D) 200, 80, 80, 2000
A-1 14 EN
14. 74. EIA-report is prepared refering72. An anemometer at a height of 10 in
above the ground measures the wind
speed at 2.5 m/s, the wind speed at an
elevation of 300 m in rough terrain for
atmospheric stability class C with
exponent P = 0.2 is
(A) 5 m/s
(B) 4.9 m/s
(C) 6 m/s
(D) 9 m/s
(A) Base line data
(B) Composting
(C) Geological data only
(D) Previous reports
75. Specific surface area of Activated
Carbon is around
73. An aerobic method of decomposing of
solid waste is called
(A) Incineration
(B) Burning
(C) Pyrolysis
(D) Composting
(A) 1 — 2 m2/g
(B) 10 — 20 in2/g
(C) 100 — 200 m'-/g
(D) 1000 — 1500 m2/g
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EN 15 A-1