Pdf — Ms Chauhan Organic Chemistry Advanced Problems

Assertion (A): The rate of SN2 reaction of CH₃Cl with OH⁻ increases when the solvent is changed from water to DMSO. Reason (R): DMSO better solvates the transition state than water. (a) Both A and R true, R correct explanation. (b) Both A and R true, R not correct explanation. (c) A true, R false. (d) A false, R true. Section D: Matching (Column I vs Column II) (4 marks – fully correct only)

Solve each question. Time limit: 90 minutes. Max marks: 50. Section A: Multiple Correct (Type: One or more options correct) (4 marks each, -1 for partial) ms chauhan organic chemistry advanced problems pdf

Identify the correct statement(s) about aromaticity : (a) [18]annulene is aromatic (b) Cyclopentadienyl anion is anti-aromatic (c) Tropylium cation is aromatic (d) Pyridine-N-oxide is less aromatic than pyridine Section B: Integer Answer (Type: Numeric value 0–9) (3 marks each, no negative) Assertion (A): The rate of SN2 reaction of

How many distinct products (including stereoisomers) are formed when 3-methylpent-2-ene reacts with Br₂ in CCl₄ under dark conditions? (b) Both A and R true, R not correct explanation

Which of the following intermediates are involved in the acid-catalyzed rearrangement of pinacol to pinacolone ? (a) Carbocation (b) Carbanion (c) Free radical (d) 1,2-methyl shift

1→?, 2→?, 3→?, 4→? Section E: Synthesis (Write reaction sequences) (5 marks each)