Polymers + Chemistry in Everyday Life
Addition vs condensation, monomers of Nylon-6, Nylon-6,6, Bakelite, PDI calculation — then drug classification: antihistamines, antacids, sweeteners (Aspartame vs Saccharin), antiseptics vs disinfectants.
Lock this in. BITSAT asked PDI numericals in 2024. Both chapters are short and high-yield — clean them in one session.
Pick a module on the right to start. Tick the circle next to each module as you finish it; the day completes automatically when all modules are done.