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Tuesday, 3 October 2017

Environmental Sciences model questions(CHY 1702)



 1.  Biodiversity includes the variability of all types of living organisms and the variations within the ecosystems. Authenticate this statement with suitable examples.

2.      How would you restrict the scuffles due to the increase in population density of human and wildlife with overlaps in geographical areas?

3.      Explain about the different practices of conservation of the life on Earth in all its forms.

4.      Vicinity of the atomic power plants and steel industries increased toxicity level of chemicals in water bodies is detected. List the different control methods to avoid this kind of incident

5.      Identify the type of wastes and describe the disposal methods adopted for the following:   Batteries (ii) amputated organs (iii) horticultural wastes (iv) Egg shells (v) Glass bottles

6.      Every year the average temperature of the earth is elevated due to high emission of greenhouse gases (GHG). How does emission trading scheme help the countries to control the emission of GHG?

7.      Describe with the help of a case study, how a meteorological phenomenon and air pollution have affected the environment and health of living beings.

8.      List down the various measures to ensure a silent zone.

9.      Why ozone depletion has appeared over Antartica when ozone depleting substances are present throughout the stratosphere? Give the names of ozone depleting chemicals.

10.  Find out the type of pollution and pollutants triggering the following: (a) Love canal tragedy (b)Blue baby syndrome (c) Somatic damage (d) Abscission (e) Bioaccumulation

11.  Why the nature has created the earth with lot of biodiversities. What would happen if     there are no biodiversities on this planet, earth?

12.  The food scarcity is keep on increasing due to continuous increase of people population.

13.  As an expert, what sort of steps you will take to bring down the food scarcity?

14.  Human encroachment into forest should be prohibited by government. Justify your answer.

15.  An Indian student visited Japan for attending a conference. During his stay, he collected the wastes in a disposal bag from his apartment and kept it outside for garbage collection.

16.  But, the garbage was not taken by Japan’s municipal office, instead, he was fined. Why the student was fined and how will you rectify his mistake?

17.  In year 2000, the most acidic rain falling in the USA has a pH of about 4.3. Explain the reason for this sudden decrease of pH than the normal pH (~ 6.0) of rain water.

18.  Will you eat the contaminated foods with heavy metals like mercury and cadmium? Justify your answer.

19.  The Montreal Protocol aims at the phasing out the production of chlorofluorocarbons that are not harmful to humans. In fact, we are using it in the refrigerator and aerosols. Why the countries should adopt the Montreal Protocol?

20.  About 100 years ago, the temperature fluctuation was about 0.5 - 1°C. Now, some models propose up to 9°C increase in this century. As an expert, find out the reason and how will you rectify it? 

21.  Explain in detail about the preventive measures for earthquake and tsunami considering the human life and the environment?

22.  Explained the tragedy happened in Bhopal? What lesson you have learned from this incident?

23.  The soft drinks are stored in plastic cans. What kind of chemical hazards responsible and explain it

24.  Nitrite as food preservative used in vegetable chips and noodles - Mention its toxicity.

25.  Growing global threat of the disease which cause bacterial infection of the lungs, find the disease and write its causes and preventive treatment.

26.  Nuclear energy is beneficial or harmful? Discuss in both way.

27.  Describe the pollution caused from volatile organic hydrocarbon and nitrogen oxide under the influence of light.

28.  What changes might occur in the global hydrological cycle and the carbon cycle if the atmosphere experience significant warming? 

29.  World’s worst nuclear power plant accident occurred in 1986. Discuss about it.

30.  What are the suggestions will provide to save energy in a big building such as apartment, shopping mall etc.

31.  Discuss about the energy produced from Dams, Tides and Waves?

32.  Suggest the best fuel to replace petrol or diesel for future generation?

33.  Name a few important synthetic pesticides and describe in brief about the harmful effect of these ticides on human and other life forms.

34.  During a formal debate on the hazards of air pollution, one team argues that ozone is helpful to the atmosphere, and the other team argues that it is destructive. Under which conditions is each teams arguments correct?

35.  A small amount of a cancer causing chemical in drinking water or smoking cigarettes tends to genera  greatest public concern? Justify the answer.

36.  Solar energy is popular as compared to conventional energy options. Justify.

37.  What are bio-indicators for identifying pollution? Describe in briefs about the types of bio-indicators

38.   Next to your village, the government has started to construct a nuclear power plant. Describe safety issues associated with nuclear power plants and risks associated with the storage of radioactive wastes.

39.  List the energy conservation measures you could adopt in each of the following aspects of your life; lighting, bathing, cooking, buying a car and driving a car.

40.  Name the treatment process which removes about 90% of the biodegradable materials present in the water.

41.  Will it be easier for societies to mitigate climate change by implementing any protocol? Explain you answer.

42.  Discuss the environmental problems caused by using oil and natural gas.

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