Subject : Opt. I Environment Science Full Marks: 75
Time: 2 hrs. 15 mins.
Candidates are required to write their answers according to the instructions given.
Attempt all questions.
GROUP A
Very Short Answer Questions
Attempt all questions from this group. (11 x 1 = 11)
1) Write any two types of fresh water ecosystem. (0.5 + 0.5 = 1)
2) Write any two causes of degradation of wetlands in Nepal. (0.5 + 0.5 = 1)
3) Define 3Rs principle in short. (1)
4) “Solid wastes are the source of pollution.” How? Give single reason. (1)
5) “Methane is natural greenhouse gas”. Why? (1)
6) How can forest be conserved? Write any two ways. (0.5 + 0.5 = 1)
7) CFUG is related with community forest. Write the full form of CFUG. (1)
8) What is biodiversity? (1)
9) Name any two plants having religious value. (0.5 + 0.5 = 1)
10. What is agroforestry? (1)
11. When was ICIMOD established? (1)
GROUP B
Short Answer Questions
Attempt all questions from this group. (8 x 5 = 40)
12. Explain the components of lotic ecosystem in brief. (5)
13. Write any ten causes of soil pollution. (0.5 x 10 = 5)
14. Explain the role of public awareness and legal provision for the conservation of forest. (2.5 + 2.5 = 5)
15. Write any five differences between in situ conservation and ex situ conservation. (5)
16. Explain in brief any two techniques used to attain sustainable development. (2.5 + 2.5 = 5)
17. Write in short about ‘The Earth Summit’ and ‘Kyoto Protocol’. (2.5 + 2.5 = 5)
18. Make a list of any ten effects of unsuitable workplace environment to human health. (0.5 x 10 = 5)
19. What is noise pollution? Enlist any four controlling measures of it. (1 + 4 = 5)
GROUP C
Long Answer Questions
Attempt all questions from this group. (2 x 12 = 24)
20. What is ozone layer depletion? Make a list of its causes, effects and controlling measures. (2 + 4 + 3 + 3 = 12)
21. Write short notes on: (4 + 4 + 4 = 12)
a. Environment Management
b. Radiation Pollution
c. Eco-friendly activities in industry
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