N Nexsus

Environmental Science and Green Chemistry — Major (End Semester) 2026 question paper

MMMUT Information Technology previous year question paper for Environmental Science and Green Chemistry (BSM-190), semester 2, Major (End Semester) 2026. All 24 questions are listed below, each with a written answer on Nexsus.

Paper details

  • Subject: Environmental Science and Green Chemistry (BSM-190)
  • Branch: Information Technology
  • Semester: 2
  • Exam: Major (End Semester) 2026
  • Questions: 24

Questions asked in Environmental Science and Green Chemistry Major (End Semester) 2026

  1. Q1(a). Explain elimination reaction with examples. Draw the mechanism for unimolecular elimination reaction. [2 marks]
  2. Q1(b). Explain the following terms: (i) Inductive effect (ii) Mesomeric effect. [2 marks]
  3. Q1(c). Explain the mechanism of Beckmann rearrangement. [2 marks]
  4. Q1(d). What do you mean by hardness of water? Discuss its types. [2 marks]
  5. Q1(e). Calculate the pH and pOH of 0.25 M aqueous solution of HCl at 25°C. [2 marks]
  6. Q1(f). Write a note on greenhouse effect and its impact on environment. [2 marks]
  7. Q1(g). Draw the molecular orbital diagram for HF molecule. Also discuss its bond order. [2 marks]
  8. Q2(a). Explain the following terms: (i) Bathochromic shift (ii) Hyperchromic shift (iii) Beer-Lambert law (iv) Auxochrome (V) Chromophore.
  9. Q2(b). (i) Explain the electronic transitions in UV-visible spectroscopy. (ii) Calculate the % transmittance of the solution when absorbance is 0.70. [4 marks]
  10. Q2(c). (i) Explain the types of vibration with examples in IR spectroscopy. (ii) Calculate the fundamental modes of vibration of the following polyatomic molecules: SO2, HCN, NO2 [5 marks]
  11. Q3(a). Predict the number of signals in the HNMR spectroscopy of the following molecules:............................ [5 marks]
  12. Q3(b). (A) Write the synthesis and uses of following polymers: (i) Nylon-6,6 (ii) Buna-N (iii) PMMA (B) Write the difference between biodegradable and non-biodegradable polymers. [5 marks]
  13. Q3(c). (A) Discuss the classification polymers in detail.
  14. Q4(a). Explain the twelve principles of green chemistry and their importance in chemical synthesis. [5 marks]
  15. Q4(b). Discuss the role of green reagents in sustainable chemical processes. Provide two examples of commonly used green reagents and their reactions. [5 marks]
  16. Q4(c). (A) What are advantage of using water as a green solvent over other organic [3 marks]
  17. Q5(a). Explain microwave assisted organic transformation in green chemistry. Give the example of reactions assisted by microwave radiation. Also compare them with conventional method synthesis. [5 marks]
  18. Q5(b). Explain ultrasound assisted organic transformation in green chemistry. Give the example of reactions assisted by ultrasound wave. Also compare them with conventional method synthesis. [5 marks]
  19. Q5(c). Compare traditional chemical synthesis pathways with green chemical synthesis pathways. Highlight the differences in terms of efficiency, waste production, and environmental impact with the help of two examples of industrial chemicals. [5 marks]
  20. QQ1. Attempt any five parts of the following. (Unit I and II)
  21. QQ2. Attempt any two parts of the following. (Unit III only)
  22. QQ3. Attempt any two parts of the following. (Unit III only)
  23. QQ4. Attempt any two parts of the following. (Unit IV only)
  24. QQ5. Attempt any two parts of the following. (Unit IV only)