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 | December, 2016 | |
| City, State | new delhi, |
Question Paper
1.
The soil organisms which can synthesize their own food are called
PAN stands for in air pollution.
Pollutants produced as a result of human activity are known as
Disease producing micro-organisms are known as
In chromatography the best separations are achieved by eluting with the least solvents.
the temperature to which the air must be cooled to reach saturation at constant pressure.
Define the following:
Polypedons
Pesticides
Bio-concentration
Frozen Precipitation
Chromatogram
Molar absorptivity
Name the important reactions which take place in the chemical process of weathering.
State the ways in which an aqueous system is affected by eutrophication.
What is the importance of Ozone and in which layer does it exist in the atmosphere
Explain the use ofAPI oil separator.
Why is it necessary to calibrate glass electrode before determining the pH of a solution
Define the terms Oxidation and Reduction.
Name any one disease caused by the following:
Escherichia coli
Salmonella paratyphi
2.
Describe soil horizons and explain their importance in determining the properties of soil.
Why is conservation and management of water resources required?
What is acid rain? How does it affect human health and buildings
Discuss any five adverse effects of pesticides
Define molar conductivity. At 298 K the resistance of 2·00 x M KCl is 195·96 ohm. and that of 2·50 x M K2SO4 is 775·19 ohm. The conductivity of 2·00 x M KCl at 298 K is 0·27685 Calculate the molar conductivity of K2SO4 solution.
Define Chromatography. Explain the principle of ion-exchange chromatography.
3.
Differentiate between soil water content and plant available soil moisture.
What are the benefits and adverse ecological and socio-economic implications associated with the construction of big dams?
What is Ozone layer? Discuss the impacts of ozone layer depletion on air pollution.
Describe the implant measures which can be adopted for control of pollution in industry.
Classify the analytical procedures on the basis of size of samples.
Name any four methods commonly used for studying soil micro-organisms. Explain any one method in brief.
4.
State and explain the law of diminishing returns. Also show graphically how the percent yield changes with the supply of nutrients.
Explain the role of climatic factors and weathering reactions in changing the composition of water.
How does presence of surfactants affect the treatment of sewage How are surfactants removed from sewage?
What strategies can be adopted to reduce environmental pollution due to fertilisers?
Describe the basic components of ultraviolet visible spectrophotometer.
What is a reference electrode Describe any one electrode briefly.
5.
What is the role of soil organisms in the life cycle of plants and animals Why are bio-fertilizers and cultural practices important for the soil
State the differences between reverse osmosis and electro-dialysis.
What is photochemical smog? How does it get generated
Explain briefly how animals and human beings are exposed to water pollutants.
Write a note on complexometric titrations.
Write the general principle for spectrophotometric determination of water pollutants.
The soil organisms which can synthesize their own food are called
PAN stands for in air pollution.
Pollutants produced as a result of human activity are known as
Disease producing micro-organisms are known as
In chromatography the best separations are achieved by eluting with the least solvents.
the temperature to which the air must be cooled to reach saturation at constant pressure.
Define the following:
Polypedons
Pesticides
Bio-concentration
Frozen Precipitation
Chromatogram
Molar absorptivity
Name the important reactions which take place in the chemical process of weathering.
State the ways in which an aqueous system is affected by eutrophication.
What is the importance of Ozone and in which layer does it exist in the atmosphere
Explain the use ofAPI oil separator.
Why is it necessary to calibrate glass electrode before determining the pH of a solution
Define the terms Oxidation and Reduction.
Name any one disease caused by the following:
Escherichia coli
Salmonella paratyphi
2.
Describe soil horizons and explain their importance in determining the properties of soil.
Why is conservation and management of water resources required?
What is acid rain? How does it affect human health and buildings
Discuss any five adverse effects of pesticides
Define molar conductivity. At 298 K the resistance of 2·00 x M KCl is 195·96 ohm. and that of 2·50 x M K2SO4 is 775·19 ohm. The conductivity of 2·00 x M KCl at 298 K is 0·27685 Calculate the molar conductivity of K2SO4 solution.
Define Chromatography. Explain the principle of ion-exchange chromatography.
3.
Differentiate between soil water content and plant available soil moisture.
What are the benefits and adverse ecological and socio-economic implications associated with the construction of big dams?
What is Ozone layer? Discuss the impacts of ozone layer depletion on air pollution.
Describe the implant measures which can be adopted for control of pollution in industry.
Classify the analytical procedures on the basis of size of samples.
Name any four methods commonly used for studying soil micro-organisms. Explain any one method in brief.
4.
State and explain the law of diminishing returns. Also show graphically how the percent yield changes with the supply of nutrients.
Explain the role of climatic factors and weathering reactions in changing the composition of water.
How does presence of surfactants affect the treatment of sewage How are surfactants removed from sewage?
What strategies can be adopted to reduce environmental pollution due to fertilisers?
Describe the basic components of ultraviolet visible spectrophotometer.
What is a reference electrode Describe any one electrode briefly.
5.
What is the role of soil organisms in the life cycle of plants and animals Why are bio-fertilizers and cultural practices important for the soil
State the differences between reverse osmosis and electro-dialysis.
What is photochemical smog? How does it get generated
Explain briefly how animals and human beings are exposed to water pollutants.
Write a note on complexometric titrations.
Write the general principle for spectrophotometric determination of water pollutants.
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)
- School of Interdisciplinary and Trans-Disciplinary Studies (SOITDS)
- School of Journalism and New Media Studies (SOJNMS)
- School of Law (SOL)
- School of Management Studies (SOMS)
- School of Performing Arts and Visual Arts (SOPVA)
- 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