Green Chemistry — DU B.Sc (hons) Chemistry Previous Year Question Papers

(c) What are the green chemistry challenge awards. Discuss its any five categories. (5) 3. (a) What are ionic liquids? Why are these also termed as designer solvents. Give the advantages of ionic liquids. (5) (b) Catalytic reagents are superior to stoichiometric reagents. Explain. (5) (c) Define Atom economy. Calculate it for the following reaction: (5) 4) (a) Match the following: (5) A B i) Water (a) Enzymes ii) Biocatalysis (b) T. Paul Anastas iii) Bhopal Gas Tragedy (c) Universal solvent iv) E-Factor (d) John C. Warner Father of Green Chemistry (e) MIC (b) What is supercritical COz? Discuss its advantages and disadvantages as a solvent in place of organic solvent. 5) Differentiate between the following: (with suitable examples) (any three) (5x3=15) a) Microwave and Conventional heating b) Homogeneous and Heterogeneous catalysis c) % Atom Economy and % yield d) Green Chemistry and Environmental Chemistry 6) Write Short Notes on the following: (any three) (5x3=15)