Dr.A.P.J.Abdul Kalam University MSC Chemistry IV SEM JUNE20 Environmental Chemistry [MSC402T] Aug-Sep 2020 Question Paper

Dr.A.P.J.Abdul Kalam University Old Question Papers

Master of Science (Chemistry)

Fourth Semester Main Examination, Aug-Sep 2020

Environmental Chemistry [MSC402T]

Time: 3:00 Hrs Max Marks 85

Note: Attempt all questions. Each question has two parts.

Part A is 10 marks and part B is 7 marks.

Q.1 (a) Explain analytical method of measuring BOD.

(b) Explain Biochemical cycle of carbon. 

OR

(a) Explain various effects of heat budget.

(b) Describe vertical temperature and temperature version.

Q.2 (a) Explain minamata diseases.

(b) What are pesticides explain.

OR

(a) Write down the classification of pesticides.

(b) Write brief note cu tsunami.

Q.3 (a) What is air pollution? Write control strategies of air pollution.

(b) What is noise pollution? Write control strategies of noise pollution.

OR

(a) How did the smog formed in atmosphere? Explain.

(b) Write down the photochemical reaction in atmosphere.

Q.4 (a) Explain, What are micro and macro nutrients?

(b) Explain biological cycle of nitrogen.

OR

(a) Write short note on the biological cycle of oxygen.

(b) Write down the purification and treatment method of water.

Q.5 (a) Explain the analytical method of measuring COD (Chemical oxygen demand).

(b) Explain organochlorine pesticides, briefly.

OR

Write short note on any two:

i. Acid Rain

ii. Green House Effect

iii. DO (Dissolved Oxygen)

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