Basics of Environmental Studies - Jun 2015
First Year Engineering (Semester 1)
TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks.
Choose the most appropriate answer for the following multi choice
1 (a) 1 In ecological pyramids, pyramid of energy is ___________.
(a) an inverted pyramid only
(b)a spindle shaped pyramid only
(c)an upright pyramid only
(d)none of the above(1 marks) 1 (a) 2 The range of temperature variation in mesosphere is _________________.
(a) 20° C to -56°C (b) -2°C to -90°C
(c)-56°C to -2°C (d) -90°C to 1200°C(1 marks) 1 (a) 3 The rate of biomass per unit area per unit time is known as ___________.
(a)biomagnification (b)biomes (
C) saprophytes (d) productivity(1 marks) 1 (a) 4 Mortality rate is defined as ___________________________.<br. (a)="" number="" of="" births="" per="" one="" thousand="" people="" in="" a="" particular="" year<br="">(b)Number of deaths per one thousand people in a particular year
(c)Number of births per one thousand people in a city
(d)Number of deaths per one thousand people in a city</br.><>(1 marks) 1 (a) 5 Solid or liquid particle in the air smaller than 1 ?m is known as ________.
(a) Flyash (b) Aerosol (c) Soot (d)Mist(1 marks) 1 (a) 6 ___________________ is a green house gas.
(a) Nitrogen (b) Oxygen (c) Argon (d) Water vapour(1 marks) 1 (a) 7 The area where freshwater from the river mixes with sea water is known as ________________.
(a) an estuary (b) a fresh water reservoir (c) a lake (d) a stream(1 marks) 1 (b) 1 Eutrophication is caused due to the nutrients like ___________.&
(a) calcium and sodium (b) phosphorous and nitrogen (c) carbon and oxygen
(d)None of the above(1 marks) 1 (b) 2 The per capita water availability ________________ if the utilizable water resources is decreased and the population is increased.
(a) increases (b) decreases (c) remain unchanged (d) may increase or decrease(1 marks) 1 (b) 3 Chipko movement is associated with ____________________________.
(a) illiteracy (b) soil conservation (c) water conservation (d) forest
1 (b) 4 Autecology is defined as ______________________________.
(a) the study of abiotic environment (b) the study of communities
(c)the study of population of single species (d) the study of living and non living environment(1 marks) 1 (b) 5 The provisions for environmental protection include _____________.
(a) prevention and control of water pollution act (b) prevention and control of air pollution act (c) environmental protection act (d) all of the above(1 marks) 1 (b) 6 Fluorosis is ________________.
(a) decolorisation of teeth (b) reduction of fluids in body (c) a respiratory disease (d) none of the above(1 marks) 1 (b) 7 Saprotrophs feed on __________________.
(a) fresh vegetables (b)dead microbes (c)rotten organic material (d)live plants(1 marks) 2 (a) What are the objectives and guiding principles of environmental education? Discuss the significance of environmental education in engineering Curriculum(7 marks) 2 (b) Write a brief note on ?Energy flow in Ecosystem?. State and explain ecological pyramids.(7 marks) 3 (a) Classify forests and write the ecological and economic importance of forests. What are the causes and effects of deforestation?(7 marks) 3 (b) Justify Land as a resource. What are the causes, effects and control measures for land degradation?(7 marks) 4 (a) Explain green house effect with a schematic diagram? Discuss various green house gases and describe their role in global warming.(7 marks) 4 (b) Give the classification of water pollutants. Explain eutrophication with its sources and control measures.(7 marks) 5 (a) Explain the important theories of population growth? Discuss the causes, effects and control measures of population explosion.(7 marks) 5 (b) Discuss the advantages and limitations of conventional and non conventional energy resources. What are the environmental implications of conventional energy resources?(7 marks) 6 (a) Describe Environmental Ethics with the objectives and limitations. Explain the role of NGOs to impart environmental protection(7 marks) 6 (b) Give the classification of air pollutants and discuss the ambient air quality standards of important air pollutants(7 marks) 7 (a) What is an ecosystem? Enlist major ecosystems and describe marine ecosystem in detail.(7 marks) 7 (b) Describe 'Environmental Protection Act, 1986' with its objectives.(7 marks)