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Envs 212: Environmental And Industrial Chemistry Question Paper

Envs 212: Environmental And Industrial Chemistry

Course:Bachelor Of Science In Environmental Science

Institution: Kabarak University question papers

Exam Year:2010

INSTRUCTIONS:
Total Marks = 60%
Attempt all questions in section A and any two in section B

SECTION A
1. Discuss on (a) Carbon cycle (b) Nitrogen cycle (c) Hydrological cycle (d) Oxygen cycle
(8 marks)
2. (a) Explain using equations the chemical processes for the formation of inorganic particulates
in the atmosphere? (4 marks)
(b) Discuss four methods in which inorganic particulates can be controlled. (4 marks)
3. (a) Name two carcinogenic organic compounds and give their main sources. (3 marks)
(b) Explain why ‘Soot’ is a toxic particulate? (2 marks)
(c) Name the sources “of soot.” (3 marks)
4. (a) Discuss the photochemical reactions of (i) SO2 gas (ii) NO gas (iii) Cl2 (3 marks)
(b) Explain using equations the formation of ozone gas in the atmosphere? (1 mark)
(c) Explain the importance of ozone gas and how it can be depleted by gaseous pollutants.
(Give equations where necessary) (4 marks)
5. (a) Discuss the courses of eutrophication in water reservoirs. (3 marks)
(b) Explain why radiation rays are considered to be pollutants? Give examples. (3 marks)
(c)Explain the difference between micro and macronutrients in the soil? (2 marks)

SECTION B (20 MARKS)
6. Discuss the sources of trace elements both metallic and inorganic species present in polluted
water and their effect to human life. (10 marks)
7. Discuss on industrial manufacture of nitric acid (Haber’s process) and explain how the
gaseous and industrial effluent can be controlled from polluting the environmental.(10 marks)
8. Discuss three major pollutants of air and their effects on the environment and explain how
they can be controlled. (10 marks)

Envs 212: Environmental And Industrial Chemistry Question Paper

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