Environmental Biotechnology & Management — DU B.Sc. (Hons.) Botany Previous Year Question Papers

(ii) What is the nature of effluents in sugar industry? Explain the treatment schemes of waste water generated from this industry. 4. Attempt the following (any three) : (5x3=15) (i) What are the biotechnological approaches for air pollution abatement? (ii) Write note on Water Pollution Act 1974. (iii) Discuss biodegradation of pesticides with one example. (iv) Highlight the key features of Brundtland Report. 5. Answer the following : (5x3-15) (i) Enlist the differences between: Trickling filter and Anaerobic filter (ii) What aret.the causes and consequences of acid rain? (iii) Write a concise note on fluidized bed and fixed bed bioreactor. 4. All parts of a question should be answered together. Draw diagrams wherever required. 1. (i) Expand the following (any five) : (1x5=5) (ii) Define (any five) : (f) Volatile organic compounds (iii) Give one-word answer for the following (any five) : (1x5=5) (a) The amount of oxygen needed to chemically oxidize organic and inorganic matter in a water sample. (b) A greenhouse gas. (c) The process where a water body becomes enriched with nutrients, such as nitrogen and phosphorus, leading to excessive plant and algae growth. (d) A bioindicator for gaseous pollution. (e) Chemical substance found within a living organism that is not natural.1y produced by that organism. (I) A bacterium known as superbug. 2. Write short note (any three)\ : (ii) Rio Earth summit and its declaration (iv) Bioaccumulation of metals (i) Explain the principle, working and applications of UASB with suitable diagrams.