GTU First Year Engineering (Semester 1)
Basics of Environmental Studies
June 2014
Total marks: --
Total time: --
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

Choose the most correct answer of the following multiple choice questions.
1 (a) (i) Earth Day is celebrated on _________.
(a) 5th June
(b) 12th May
(c) 22nd April
(d) 22nd May
1 M
1 (a) (ii) Stratosphere contains an important spices which protects life on Earth is __________.
(a) Oxygen
(b) Ozone
(c) Nitrogen
(d) Hydrogen
1 M
1 (a) (iii) A zone consisting of Land, water and air which supports life is called.
(a) Biosphere
(b) Atmosphere
(c) Lithosphere
(d) Hydrosphere
1 M
1 (a) (iv) The graphical representation of an orginasm position as well as function at successive trophic levels called _________.
(a) Food chain
(b) Food web
(c) Ecological pyramid
(d) Biogeochemical cycle
1 M
1 (a) (v) The Equitable use of resources is necessary for _____________.
(a)sustainable development
(b) better Life Style for man
(c) Sustainnatural wealth
(d) Allof the above
1 M
1 (a) (vi) The average number of persons living per sq. km. is known as __________.
(a) Community
(b) Population growth
(c) Population
(d) Population density
1 M
1 (a) (vii) Any material that can be transformed into more valuableand useful product or service is called ________.
(a) Resource
(b) mineral
(c) element
(d) product
1 M
1 (a) (vii) Sex ratio is defined as _____________.
(a)Nos. of female per 1000 male.
(b) Nos. of female per 100 male.
(c)Nos. of male per 1000 female
(d) Nos. of male per 100 female.
1 M
Choose the most correct answer of the following multiple choice questions.
1 (b) (i) PAN is a secondary pollutant that ____________.
(a) Formswhen hydrocarbon radical reacts with nitrogen dioxide.
(b) Cause photochemical smog.
(c) May cause respiratory diseases in human.
(d) All of the above
1 M
1 (b) (ii) _____________ gives an empirical value to water quality and is a parameter for organic matter present in water.
(a) B O D
(b) C O D
(c) D O
(d) All of the above
1 M
1 (b) (iii) Which of the following is not a method for water conservation.
(a)Rain water harvesting.
(b) Improving irrigation efficiency
(c) A voiding wastage of water
(d) Ground water extraction.
1 M
1 (b) (iv) Automobile Exhaust consists of ______________.
(a) Hydrocarbons, carbon monoxide and nitric oxide.
(b) Lead vapour
(c) Sulphur dioxide.
(d) Carbon dioxide
1 M
1 (b) (v) Sunlight may be converted into electricity through __________.
(a) galvanic cell
(b)carbon electrodes
(c) photo voltic cell
(d)glass pane
1 M
1 (b) (vi) The energy flow through the Ecosystem is __________.
(b)linear and one way
(c) both cyclicandlinear
(d)linearand two way
1 M

2 (a) Define the term Environment and Explain interrelationship between Various components of Environment.
7 M
2 (b) Give at least four names of government body in Gujarat State Working for environmental protection. Also write the role of NGO?s in improving Environment awareness.
7 M

3 (a) What is biogeochemical cycle? Explain carbon cycle with neat sketch
7 M
3 (b) Define ecological pyramid State the types of ecological pyramidand describe the pyramid of energy showing the energy flow
7 M

4 (a) Differentiate renewable and non renewable natural resourcesAlso state various measures for conservation of natural resources
7 M
4 (b) Enlist various causes and effects of deforestation. Also suggest few possible measures to check deforestation.
7 M

5 (a) What is Urbanization? What are the Environmental problems related to urbanization? How urbanization can be controlled?
7 M
5 (b) Classify various sources of water pollution. Also write various measures to control it
7 M

6 (a) Enlist different air pollutant and explain their effects onhuman beings.
7 M
6 (b) Write a Short Note on (a) Landdegradation (b) Sources and effects of noise pollution
7 M

7 (a) Discuss ?Solar Energy is the Energy for future in India?
7 M
7 (b) Enlist major global Environmental problems. Also write causes and effects of a cid rain.
7 M

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