Basics of Environmental Studies : Jun 2015 - First Year Engineering (Semester 1) | Gujarat Technological University (GTU)

Basics of Environmental Studies - Jun 2015

First Year Engineering (Semester 1)

(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

Questions: 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.&gt;<>(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 conservation(1 marks) 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)

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