Environmental Science and Green Chemistry — Minor 2026 question paper
MMMUT Computer Science and Engineering previous year question paper for Environmental Science and Green Chemistry (BSM-190), semester 2, Minor 2026. All 12 questions are listed below, each with a written answer on Nexsus.
Paper details
Subject: Environmental Science and Green Chemistry (BSM-190)
Branch: Computer Science and Engineering
Semester: 2
Exam: Minor 2026
Questions: 12
Questions asked in Environmental Science and Green Chemistry Minor 2026
Q1(a). Draw the molecular orbital (MO) diagrams for NO and O2 molecules. Also write their electronic configurations and calculate the bond order. [4 marks]
Q1(b). Explain the reaction mechanism of (I) Cannizzaro Reaction (II) Hofmann Rearrangement [4 marks]
Q1(c). Write a short note on acid rain and its effect on environment. [4 marks]
Q2(a). Define Normality and Molarity of the solution. Calculate the molarity of a solution containing 5 gm of NaCl in 250 mL of the solution. [3 marks]
Q2(b). What is nucleophilic substitution reaction? Explain the mechanism for SN^{1} and SN^{2} reaction with examples. Also differentiate between SN^{1} and SN^{2} reaction. [3 marks]
Q2(c). Write a note on Inductive effect. Compare the stability of 1°, 2°, and 3° carbocation on the basis of inductive effect. Explain the reason. [3 marks]
Q3(a). Differentiate between soft and hard water. Explain the zeolite process for softening of water. [3 marks]
Q3(b). Explain lime soda process for water softening. Write its advantages and disadvantages. [3 marks]
Q3(c). What is ozone layer depletion? Explain the effect and causes of ozone layer depletion. [3 marks]
QQ1. Attempt any Two parts of the following (Unit 1 & Unit 2)