Class 12 Organic Chemistry Cheat Sheet — Named Reactions, Road Maps, Tests & Mechanisms

Chemistry · Class XII · Cheat Sheet

A comprehensive cheat sheet covering all Class XII Organic Chemistry — named reactions, diazonium salt road maps, distinguishing tests, SN1/SN2 mechanisms, acidity/basicity order, and biomolecules. Read it directly below or download the PDF.

By Editorial Team · February 2025 · Cheat Sheet · 20 pages

Organic Chemistry is the chapter cluster that makes or breaks a Class XII Chemistry score. Named reactions, conversion road maps, distinguishing chemical tests, SN1 vs SN2 — there is a lot to remember, and it all needs to be at your fingertips during a 3-hour exam. A well-made cheat sheet doesn't replace studying, but it makes revision dramatically faster and helps consolidate everything you've already learned into one accessible reference.

This cheat sheet covers the entire Class XII Organic Chemistry syllabus — from Haloalkanes to Biomolecules — with named reactions, road maps for multi-step conversions, chemical tests for distinguishing compounds, and reaction mechanisms. You can read it directly below, or download it to your device.

What This Cheat Sheet Covers

01

Named Reactions (Pages 2–5) Aldol Condensation, Cannizzaro, Clemmensen, Rosenmund, Wolff-Kishner, Reimer-Tiemann, Sandmeyer, Hofmann Bromamide, Williamson Synthesis, and more — all in one place.

02

Road Maps & Conversions (Pages 6–9) Diazonium Salt roadmap, Phenol roadmap, Nitrobenzene → Aniline, Benzene → Toluene, Phenol → Biphenyl — multi-step conversions mapped clearly.

03

Distinguishing Tests (Pages 10–12) Iodoform Test, Tollen's/Fehling's, NaHCO₃ Test, Carbyl Amine Test — which compound reacts, which doesn't, and why.

04

Physical Properties & Acid/Base (Pages 12–16) Boiling point trends (H-bonding, molecular size), acidity order of alcohols (1° > 2° > 3°), basicity of aliphatic vs aromatic amines with reasoning.

05

Reaction Mechanisms (Pages 17–18) SN1 vs SN2 comparison table (rate law, stereochemistry, solvent, nucleophile strength), acid-catalyzed hydration, dehydration of alcohols.

06

Biomolecules (Pages 19–20) Carbohydrate classification, glucose reactions, reducing sugars, protein structures (Primary to Quaternary), Zwitter ion, denaturation, DNA vs RNA differences.

💡 How to Use This Cheat Sheet Use this for revision, not first-time learning. Go chapter by chapter — cover each named reaction and try to recall the reactants, products, and conditions before checking the sheet. For road maps, trace each conversion arrow and explain to yourself why that step works. The distinguishing tests section is especially useful in the week before your exam — read through it once daily.

Read the Cheat Sheet Below

The full cheat sheet is embedded below — scroll through all 20 pages directly on this page. Use the download button at the bottom to save it to your device.

📄 CLASS 12TH OC CHEAT SHEET — Organic Chemistry Complete Reference

20 pages · PDF

Can't see the PDF? Make sure you're signed in to Google, or use the download button to save it.

⬇️ Save to device Download PDF

· · ·

Why This Cheat Sheet is Built for Board Exams

This isn't a general reference — it's built specifically for CBSE Class XII board preparation. The named reactions included (Cannizzaro, Clemmensen, Rosenmund, Sandmeyer, Hofmann) are exactly the ones that appear year after year in board and pre-board papers. The distinguishing tests section focuses precisely on the pairs that examiners love to test: Ethanol vs Phenol (Iodoform Test), Aldehydes vs Ketones (Tollen's/Fehling's), Carboxylic Acids vs Phenols (NaHCO₃ Test).

The road maps are particularly useful for board preparation because conversion questions — where you have to go from Compound A to Compound B in 2–3 steps — are asked in almost every Chemistry board paper. The Diazonium Salt road map and the Phenol road map cover the two most commonly tested conversion networks in Class XII organic chemistry.

Share this with your chemistry study group. More resources — KVS pre-board papers, chapter-wise PYQs — are available on this site.

Best of luck with your boards. You've got this.

⚠ Disclaimer

All the contents are linked in this site referred from the original site/channel of the developer. ConTent4U has not developed these contents. This blog is meant for sharing the useful links only so that each and everyone gets the benefit of e-learning.