“Class 12 board ke sabse important 10 reactions—90% chance paper me aa jayenge!”

“Class 12 board ke sabse important 10 reactions—90% chance paper me aa jayenge!” 1️⃣ Kolbe’s Electrolysis RCOONa → (electrolysis) → Alkane (R–R ) “Ek simple electrolysis… aur ban gaya alkane! Iska board me fixed question aata hai 2️⃣ Reimer–Tiemann Reaction Phenol + CHCl₃ + NaOH → Salicylaldehyde “Phenol se aldehyde? Magic nahi, Reimer–Tiemann reaction! 3️⃣ Aldol Condensation Aldehyde/ketone (α-H) → β-hydroxy aldehyde/ketone → α,β-unsaturated product )“Do carbonyl compounds… ek strong base… aur ek new C–C bond!” 4️⃣ Cannizzaro Reaction Aldehyde without α-H → Alcohol + Acid S “Ek molecule reduce hota hai, ek oxidize! Board ka favourite mechanism. 5️⃣ Carbylamine Reaction Primary amine + CHCl₃ + KOH → Isocyanide (foul smell): “Agar badbu aaye… samajh jao Carbylamine hua hai!” 6️⃣ Sandmeyer Reaction Diazonium salt → Aryl Cl/Br/CN (Cu salts) “Diazonium salt = organic ka switchboard! 7️⃣ Williamson Ether Synthesis RO⁻ + R–X → R–O–R (Ether) : “Strong base + primary halide → best way to make ethers!” 8️⃣ Esterification Carboxylic acid + Alcohol → Ester + Water “Sweet smell = ester! Yeh reaction har board me aata hai. 9️⃣ Alcohol Oxidation (KMnO₄ / K₂Cr₂O₇) 1° alcohol → aldehyde → acid “Orange se green… oxidation complete!” 🔟 Hoffmann Bromamide Degradation Amide + Br₂ + KOH → Primary amine (1 C less) “Carbon ek kam… but product perfect!” Class XII Chemistry ke Top 10 Must-Know Reactions! Board exam me baar-baar poochhe jaate hain. Save this reel → Revision ho jayega in 10 sec! #class12 #class12chemistry #cbseboards #chemistryreels #chemistrytricks #organicchemistry #boards2025 #chemistryguru #studywithme #notesthatwork #examprep