Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 4th Sem New 2141308 Environmental Resources Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2141308 Date: 16/12/2019
Subject Name: Environmental Resources
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Define ?Social Forestry? & explain objective of social forestry. 03
(b) Highlight the advantages & disadvantages of wind energy.
04
(c) Enlist Green House Gases (GHGs) & explain sources responsible for emission
of each GHG gases.
07
Q.2 (a) Define the terms: 1. Median Age 2. Population density 3. Population
dynamics
03
(b) Write down difference between Weather & Climate. 04
(c) Predict the population of an old & large city for the year 2031, 20141 & 2051,
whose development is considerably constant for decades. The population data
are as follows:
Year 1991 2001 2011 2021
Population 20,840 35,924 42,670 51,720
07
OR
(c) The population of Blue city was 140,000 in year 1990. The doubling time for
the population was observed to be 25 years. Predict the population in year 2040.
07
Q.3 (a) Write down the International steps taken for Climate change. 03
(b) Explain how the forests act as ? air ? purifiers? and as ? carbon storage tanks? 04
(c) Give the difference between Malthusian theory & Optimum population theory. 07
OR
Q.3 (a) Define carbon foot print & write down types of carbon foot print. 03
(b) Compare hydro power & solar energy as alternative energy resource. 04
(c) Name the various Ozone depleting substances & ozone depletion phenomena. 07
Q.4 (a) Suggest few steps for water conservation in industry, home & agricultural. 03
(b) Enlist steps for biodiversity conservation & explain any one step in detail. 04
(c) Define Clean Development Mechanisms (CDM) & explain its goals with
suitable examples.
07
OR
Q.4 (a) Draw a neat sketch of ?Green House Effect Concept?. 03
(b) Explain the concept of environmental carrying capacity. 04
(c) Enlist & explain the reasons for declination of Biodiversity. 07
Q.5 (a) Define the terms: 1. Afforestation 2. Deforestation 3. Reforestation 03
(b) Enlist various forms of energy & explain Kinetic & Potential energy. 04
(c) Write a short note on effects of acid rain. 07
OR
Q.5 (a) Enlist various factors that limits to food production. 03
(b) Explain effects on environment while using coal as conventional source of
energy.
04
(c) Enlist various population forecasting methods & explain incremental increase
method in detail.
07
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This post was last modified on 20 February 2020