Exam Details
| Subject | Environmental Chemistry | |
| Paper | ||
| Exam / Course | Bachelor Degree Programme (APPLICATION ORIENTED COURSE) | |
| Department | School of Sciences (SOS) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2016 | |
| City, State | new delhi, |
Question Paper
Complete any ten of the following statements
is the loose earth material above solid rock.
The difference between free energy of soil water and of pure water in the standard reference state is termed as
An element necessary in extremely small amount for the plant growth is called
The region of atmosphere in which atmospheric composition is roughly the same is called
The mixture of all liquid domestic wastes including faecal matter is called
SAR is
The ratio of number of moles of a component to the total number of moles of all the components present in a solution is called
(viii) The pH range for methyl orange indicator is
A vertical section of soil from which several characteristic horizons can be identified is called
Temporary hardness of water is due to of calcium and magnesium.
The procedure followed for timely detection of changes in water quality is called
Groundwater is generally found in geological formations called as
Answer any five of the following:
Calculate the Gram Equivalent weight of KMn04 in acidic conditions. Atomic weights of Mnand0 are 39,55 and 16 respectively.
Why is it necessary to calibrate the glass electrode before determining pH of a solution?
List the factors affecting the solubility of a gas in water.
Why is carbonate alkalinity greater in groundwater than in surface water?
Name four major chemical pollutants that cause photochemical smog.
What is the difference between hydrometeors and precipitation?
What is the number of moles of NaOH in 250 ml of its 0·1 M solution?
2. Answer any four of the following:
Define the following:
Titration Curve
Normality
Molarity
Gram Equivalent Weight
Write short notes on anyone of the following
Bioconcentration
Biological Oxygen Demand
What is gravimetric estimation What are the conditions required for complete precipitation
What is the difference between bulk density and particle density of soil How is the percentage of solid particles in soil calculated
List the five mechanisms by which air pollutants can cause damage to materials.
Define pollution. Briefly describe any two pollution parameters of industrial effluents.
3. Answer any four of the following:
List the properties of a good extracting solvent.
What are pathogenic bacteria? Name any four diseases caused by them.
What are the active factors in controlling soil formation? Explain briefly.
Differentiate between indoor and outdoor air quality.
List any five characteristics of an ideal pesticide.
What is the impact of surfactants as pollutants How are surfactants removed from sewage?
4. Answer any four of the following:
What are the adverse socio--economic implications of constructing big dams State some measures to safeguard them.
List any five precautions while sampling materials for quantitative analysis.
Discuss the effect of any two of the following air pollutants on animals:
Arsenic
Fluoride
Lead
Write any three advantages and two limitations of paper chromatography.
'What is the difference between a mineral and a rock Give a brief account of metamorphic rocks.
Explain any two of the following:
Looping
Coning
Fanning
5. Answer any four of the following:
'What is an indicator microorganism? Write any four characteristics of an indicator microorganism.
Write the equations for formation of ozone in the atmosphere and for its destruction by chlorofluorocarbons.
Define chromophore and auxochrome and give an example for each.
Briefly describe anyone aerobic biological treatment method for waste water.
What information do we get after testing of organic matter in sewage?
Write the applications of conductometry in estimating purity of water and moisture content of soils.
is the loose earth material above solid rock.
The difference between free energy of soil water and of pure water in the standard reference state is termed as
An element necessary in extremely small amount for the plant growth is called
The region of atmosphere in which atmospheric composition is roughly the same is called
The mixture of all liquid domestic wastes including faecal matter is called
SAR is
The ratio of number of moles of a component to the total number of moles of all the components present in a solution is called
(viii) The pH range for methyl orange indicator is
A vertical section of soil from which several characteristic horizons can be identified is called
Temporary hardness of water is due to of calcium and magnesium.
The procedure followed for timely detection of changes in water quality is called
Groundwater is generally found in geological formations called as
Answer any five of the following:
Calculate the Gram Equivalent weight of KMn04 in acidic conditions. Atomic weights of Mnand0 are 39,55 and 16 respectively.
Why is it necessary to calibrate the glass electrode before determining pH of a solution?
List the factors affecting the solubility of a gas in water.
Why is carbonate alkalinity greater in groundwater than in surface water?
Name four major chemical pollutants that cause photochemical smog.
What is the difference between hydrometeors and precipitation?
What is the number of moles of NaOH in 250 ml of its 0·1 M solution?
2. Answer any four of the following:
Define the following:
Titration Curve
Normality
Molarity
Gram Equivalent Weight
Write short notes on anyone of the following
Bioconcentration
Biological Oxygen Demand
What is gravimetric estimation What are the conditions required for complete precipitation
What is the difference between bulk density and particle density of soil How is the percentage of solid particles in soil calculated
List the five mechanisms by which air pollutants can cause damage to materials.
Define pollution. Briefly describe any two pollution parameters of industrial effluents.
3. Answer any four of the following:
List the properties of a good extracting solvent.
What are pathogenic bacteria? Name any four diseases caused by them.
What are the active factors in controlling soil formation? Explain briefly.
Differentiate between indoor and outdoor air quality.
List any five characteristics of an ideal pesticide.
What is the impact of surfactants as pollutants How are surfactants removed from sewage?
4. Answer any four of the following:
What are the adverse socio--economic implications of constructing big dams State some measures to safeguard them.
List any five precautions while sampling materials for quantitative analysis.
Discuss the effect of any two of the following air pollutants on animals:
Arsenic
Fluoride
Lead
Write any three advantages and two limitations of paper chromatography.
'What is the difference between a mineral and a rock Give a brief account of metamorphic rocks.
Explain any two of the following:
Looping
Coning
Fanning
5. Answer any four of the following:
'What is an indicator microorganism? Write any four characteristics of an indicator microorganism.
Write the equations for formation of ozone in the atmosphere and for its destruction by chlorofluorocarbons.
Define chromophore and auxochrome and give an example for each.
Briefly describe anyone aerobic biological treatment method for waste water.
What information do we get after testing of organic matter in sewage?
Write the applications of conductometry in estimating purity of water and moisture content of soils.
Other Question Papers
Departments
- Centre for Corporate Education, Training & Consultancy (CCETC)
- Centre for Corporate Education, Training & Consultancy (CCETC)
- National Centre for Disability Studies (NCDS)
- School of Agriculture (SOA)
- School of Computer and Information Sciences (SOCIS)
- School of Continuing Education (SOCE)
- School of Education (SOE)
- School of Engineering & Technology (SOET)
- School of Extension and Development Studies (SOEDS)
- School of Foreign Languages (SOFL)
- School of Gender Development Studies(SOGDS)
- School of Health Science (SOHS)
- School of Humanities (SOH)
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- School of Journalism and New Media Studies (SOJNMS)
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- School of Performing Arts and Visual Arts(SOPVA)
- School of Sciences (SOS)
- School of Social Sciences (SOSS)
- School of Social Work (SOSW)
- School of Tourism & Hospitality Service Sectoral SOMS (SOTHSM)
- School of Tourism &Hospitality Service Sectoral SOMS (SOTHSSM)
- School of Translation Studies and Training (SOTST)
- School of Vocational Education and Training (SOVET)
- Staff Training & Research in Distance Education (STRIDE)
Subjects
- Environmental Chemistry
- Foundation Course in Science andTechnology
- Human Environment
- Integrated Pest Management
- Operations Research
- Statistical Techniques
- Teaching of Primary School Mathematics