B.E-B.E 1st Year Engineering Physics(Rajiv Gandhi Proudyogiki Vishwavidyalaya, Bhopal-2013)

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BE-201 PTO
Total No. of Questions :10] [Total No. of Printed Pages :2
Roll No ..................................
BE - 201
B.E. I & II Semester
Examination, June 2013
Engineering Physics

Time : Three Hours                                                           Maximum Marks : 70

Note: 1. Attempt one question from each unit araling internal choice available therein. All
questions carry equal marks.
2. All the fragments of particular question shall be attempted at one place only otherwise
they will be treated separate question.
3. Inside distribution of marks for any fragments (if any) may be distributed by valuer.
4. Balanced chemical equations and figure must be drawn appropriately.
Unit - I
1. Discuss present status as well as future prospects alongwith merits and demerits of
followings : in India, 14
(a) Solar energy (b) Wind power (c) Geothermal energy (d) Nuclear power
OR
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
Unit - II
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
OR
4. Write short notes on followings: 14
(a) Carbon cycle (b) Tropic level (c) Endemic & exotic species (d) Hydrosphere
Unit - III
5. Write short notes upon followings: 14
(a) Decibel scale (b) Photochemical smog
(c) Depletion of ozone layer (d) Acid rain
OR
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
Unit - IV
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
OR
8. What is soil and its importance to biosphere? How soil formation & soil-erosion takes place?
Discuss ‘eutrophication’ and ‘Biological magnification’. 14
Unit - V
9. Write short notes upon followings : 14
(a) Incineration (b) Composting (c) Paralysis (d) Pulverisation
OR
10. “EIA is an intrinsic link between economic growth and environment” justify the statement.
Describe various ethical situations belonging to engineering professionals. 14
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