Energy, Environment, Ecology & Society - May 2013
First Year Engineering (Set A) (Semester 2)
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.
Answer any one question from Q1 & Q2
1 Discuss present status as well as future prospects alongwith merits and demerits of followings : in India,
(a) Solar energy (b) Wind power (c) Geothermal energy (d) Nuclear power(14 marks) 10 EIA is an intrinsic link between economic growth and environment? justify the statement. Describe various ethical situations belonging to engineering professionals.(14 marks) 2 What is energy? Write various renewable and non-renewable sources of energy. Discuss role of fossil fuels in energy scenario of India alongwith their environmental threats.(14 marks)
Answer any one question from Q3 & Q4
3 Oxygen play vital role in troposphere while ozone do it in stratosphere elucidate. Write down in-situ and ex-situ methods of conservation of biodiversity.(14 marks)
4 Write short notes on followings:
(a) Carbon cycle (b) Tropic level (c) Endemic & exotic species (d) Hydrosphere(14 marks)
Answer any one question from Q5 & Q6
5 Write short notes upon followings:
(a) Decibel scale
(b) Photochemical smog
(c) Depletion of ozone layer
(d) Acid rain(14 marks) 6 Describe the sources, relative contributions and sink of major green-house gases. Elucidate Carbon dioxide function as a global thermostat: The earth would have been as lifeless as moon without carbon dioxide and also as hot as the hot-venus [surface temp-450°C] with too much carbon dioxide?.(14 marks)
Answer any one question from Q7 & Q8
7 Define the term BOD & COD. Which of these two would be greater for a polluted sewage? Explain compare the advantage of aerobic and anaerobic process.(14 marks) 8 What is soil and its importance to biosphere? How soil formation & soil-erosion takes place? Discuss eutrophication? and Biological magnification.(14 marks)
Answer any one question from Q9 & Q10
9 Write short notes upon followings :
(a) Incineration (b) Composting (c) Paralysis (d) Pulverisation(14 marks)