See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

(A) Increasing order of stability of conformers of cyclohexane is chair > twist boat > boat > half-chair (B) Gauche conformer of 2-fluoroethanol is more stable due to intramolecular hydrogen bonding than its anti conformer. (C) CH OH C O NH2   NaOBr Hoffmann Bromamide  NH2 CH O    Major CH OH N C O OH  (D) During ozonolysis, cross-ozonides are also formed.