AdvanceReview
Path to 300

Chemistry / Topic coverage

Organic

Rising share — GOC + reaction sequences + biomolecules/polymers/practical.

Weight highIntensity Core · dailyTrend Rising300-target 26.9 /100high
Path to 300

Mark budget for this portion

Full 300 plan →
At ~26.6% of chemistry weight, this portion should reliably deliver ~28 of your 100 chemistry marks — treat misses here as rank-droppers.
20.1Floor marks
26.9Target marks
30.9Stretch marks
26.6%Of subject weight
100Subject target
At a glance

Coverage metrics

64Tagged questions
26.6%Of Chemistry
9.14Average / year
2026Peak year (13 Q)
7/7Years present
Official · 2026

Syllabus map for this portion

Full Chemistry syllabus →
Entire Organic Chemistry syllabus including biomolecules, polymers, everyday life, practical.

Must cover from syllabus

  • GOC electronic effects + intermediates
  • EAS directing effects
  • Carbonyl named reactions listed
  • Amine/diazonium sequence
  • Practical functional group tests

Gaps / exclusions to watch

  • R,S and E,Z configurations excluded — do not overinvest
  • Benzyne / cine substitution excluded for haloarenes
Unit 01

Basic Principles of Organic Chemistry (GOC)

high

Exam focusIsomerism up to two asymmetric centres (R,S and E,Z excluded), electronic effects, intermediates.

Syllabus points

  • Hybridisation; σ/π; shapes; aromaticity
  • Structural/geometrical isomerism; stereo up to two centres (R,S & E,Z excluded)
  • Empirical/molecular formulae by combustion; IUPAC for listed classes
  • H-bonding; inductive/resonance/hyperconjugation; acidity/basicity
  • Homolytic/heterolytic cleavage; carbocation/carbanion/radical stability

Do / check

  • Respect syllabus exclusions (no R,S/E,Z naming focus)
Unit 02

Alkanes, Alkenes/Alkynes, Benzene, Haloarenes

high

Exam focusConformers (Newman), electrophilic addition, EAS directing effects, NAS of haloarenes (exclusions apply).

Syllabus points

  • Alkanes: physical properties/branching; ethane/butane conformations (Newman); prep & reactions listed
  • Alkenes/alkynes: prep by elimination; hydration (stereo of add/elim excluded); KMnO₄/O₃; reduction; electrophilic addition; peroxide effect; alkyne cyclic polymerisation
  • Benzene EAS: halogenation, nitration, sulphonation, FC alkylation/acylation; directing groups
  • Haloarenes: Fittig, Wurtz–Fittig; NAS (excluding benzyne and cine substitution)

Do / check

  • Mark syllabus exclusions so you do not overstudy stereo
Unit 03

Alkyl Halides, Alcohols, Ethers, Carbonyls, Acids, Amines, Phenols

high

Exam focusSN stereo aspects, Grignard, aldol/Cannizzaro/haloform, diazonium sequence.

Syllabus points

  • Alkyl halides: carbocation rearrangement; Grignard; nucleophilic substitution + stereo aspects
  • Alcohols/ethers: listed conversions; Williamson; C–O cleavage
  • Aldehydes/ketones: listed prep; oxime/hydrazone; aldol; Cannizzaro; haloform; Nu addition
  • Carboxylic acids: listed prep/reactions
  • Amines: Hoffmann, Gabriel; HNO₂; azo coupling; Sandmeyer; carbylamine; Hinsberg; alkylation/acylation
  • Phenols: EAS; Reimer–Tiemann; Kolbe; ester/ether; aspirin; redox

Do / check

  • Mechanism skeleton before reagent list for each named reaction
Unit 04

Biomolecules, Polymers, Everyday Life, Practical Organic

medium

Exam focusGlucose/sucrose chemistry, peptide basics, polymer types, functional group tests.

Syllabus points

  • Carbohydrates: mono/di (glucose, sucrose); oxidation/reduction; glycosides; anomers; maltose/lactose hydrolysis
  • Proteins: amino acids; peptide; primary/secondary; fibrous/globular
  • Nucleic acids: DNA/RNA composition and structure
  • Polymers: addition/condensation; homo/copolymers; rubber, cellulose, nylon, teflon, bakelite, PVC; biodegradable; applications
  • Everyday life: drug–target; named drug classes (structures excluded); sweeteners names; soaps/detergents
  • Practical: detect N/S/halogens; identify OH (alc/phenolic), carbonyl, carboxyl, amino, nitro

Do / check

  • Keep a one-page practical test table
2020–2026

Year-wise appearance

Counts of tagged questions for this topic each year.

204
218
229
2310
2410
2510
2613

Reading the pattern

  • Organic accounts for ~26.6% of tagged chemistry questions (2020–2026).
  • Trend signal: rising (early-window avg 7.0/yr vs recent avg 11.0/yr).
  • Appears in 7/7 tagged years; peak 2026 (13 Q), low 2020 (4 Q).
  • Dominant subtopics: Named/Reactions (34), Biomolecules (7), Polymers (6), Practical/Analysis (5).
  • Question-type mix: Numerical 34.4%, Multi correct 26.6%, Single correct 23.4%, Matching 15.6%.
Internal breakdown

Subtopic coverage

Start with the top subtopics — they usually carry most of this portion’s weight.

  • Named/Reactions34 · 53.1%
  • Biomolecules7 · 10.9%
  • Polymers6 · 9.4%
  • Practical/Analysis5 · 7.8%
  • Carbonyl5 · 7.8%
  • Hydrocarbons3 · 4.7%
  • Halo/Alcohol/Phenol/Ether2 · 3.1%
  • Amines2 · 3.1%
SubtopicCountShareYears (count)
Named/Reactions3453.1%2020·3 2021·4 2022·4 2023·8 2024·6 2025·6 2026·3
Biomolecules710.9%2021·1 2022·1 2023·1 2025·2 2026·2
Polymers69.4%2022·1 2023·1 2024·1 2025·1 2026·2
Practical/Analysis57.8%2021·1 2022·1 2024·1 2026·2
Carbonyl57.8%2022·1 2024·1 2026·3
Hydrocarbons34.7%2021·2 2026·1
Halo/Alcohol/Phenol/Ether23.1%2020·1 2024·1
Amines23.1%2022·1 2025·1
Exam form

Type & difficulty mix

Question types

  • Numerical — 22 questions (34.4%)
  • Multi correct — 17 questions (26.6%)
  • Single correct — 15 questions (23.4%)
  • Matching — 10 questions (15.6%)

Difficulty (heuristic)

  • H — 32 questions
  • M — 32 questions

Use for planning load only — not an official difficulty label.

Focused study

Plan for this portion

Must know

  • GOC electronic effects & intermediates
  • Carbonyl & named reaction maps
  • Aromatic electrophilic substitution logic
  • Biomolecules & polymers NCERT lines
  • Qualitative organic tests

Common traps

  • Memorising without mechanism logic
  • Ignoring stereochemistry cues

Weekly drill checklist

  • 3 reaction mechanism/ID
  • 1 GOC conceptual MC
  • 1 biomolecule/polymer/practical

Prerequisite chain

GOC→hydrocarbons→functional groups→biomolecules/practical

Often joins with

Inorganic (qualitative)Physical (kinetics of organic rarely)
Paper pointers

Sample tagged questions

Use these as deliberate practice targets from past papers.

YearPaperQSubtopicTypeDiff
2020P1Q9Named/ReactionsMCH
2020P1Q13Halo/Alcohol/Phenol/EtherNUMM
2020P2Q5Named/ReactionsSCM
2020P2Q16Named/ReactionsNUMM
2021P1Q1Named/ReactionsSCM
2021P1Q4Named/ReactionsSCM
Connections

Related mixed joins

Where this topic must connect with another concept in one stem.

Chemistry2026 · Paper 1 · Q8multi-correct

Multi-step organic synthesis + functional tests

Organic reaction sequence+Heterocycles+Tollens / qualitative tests

Knowledge bridge

Step 1: push each reagent in order to get intermediates Q, R, S, T. Step 2: recognise the heterocyclic closure in T. Step 3: apply Tollens (and related tests) only to the structure that still has the oxidisable group (S).

Why it feels hard

Mechanism memory plus lab-test logic in one multi-correct/sequence item.

What to practise

After every synthesis map, annotate which intermediates pass Tollens/Fehling/iodoform.

Open 2026 year review →
Chemistry2026 · Paper 2 · Q17–Q18linked-numerical

Kjeldahl nitrogen + Carius sulphur on related organics

Organic practical – Kjeldahl+Organic practical – Carius+Stoichiometric estimation

Knowledge bridge

Step 1: from structure/formula of L, count N and convert mass to moles of NH₃, then to mL of 1 M H₂SO₄. Step 2: from M, count S and convert to grams of BaSO₄ via Carius stoichiometry. Step 3: keep atomic masses consistent across both linked estimation asks.

Why it feels hard

NCERT ‘end chapter’ methods under numerical pressure; easy arithmetic slips.

What to practise

Treat Kjeldahl/Carius as fixed stoichiometry templates — practise until automatic.

Open 2026 year review →
Chemistry2025 · Paper 1 · Q12–Q13multi-concept

Polymers numerical + named organic reactions

Polymers+Named reactions+Stoichiometry of products

Knowledge bridge

Step 1: identify the polymer/monomer relation and compute the asked count or mass. Step 2: on the next item, map the named-reaction sequence to the major product. Step 3: connect functional-group changes across both questions if reagents overlap thematically.

Why it feels hard

End-chapter Organic + mechanism memory in numerical/SC mix.

What to practise

Never isolate polymers from GOC week — Advanced joins them in spirit.

Open 2025 year review →
Chemistry2024 · Paper 1 · Q10–Q14numerical

Practical organic + coordination + electrochem stretch

Organic practical/analysis+Coordination compounds+Electrochemistry

Knowledge bridge

Step 1: decode the practical/analysis NUM (tests, equivalents). Step 2: count coordination isomers / geometry carefully. Step 3: finish with electrochem NUM using consistent electron/ Faraday stoichiometry.

Why it feels hard

A long NUM corridor mixes three Chem branches.

What to practise

Build a ‘mixed Chem NUM’ set: 1 practical + 1 coordination + 1 electrochem.

Open 2024 year review →
Chemistry2022 · Paper 1 · Q6–Q8numerical

Organic practical + named-reaction NUM burst

Organic practical/analysis+Named reactions+Physical mixed NUM nearby

Knowledge bridge

Step 1: decode practical/analysis data into a count or identification. Step 2: push named-reaction reagents to the major product / stoichiometric ask. Step 3: keep Physical mixed NUMs mentally separate so Organic logic is not diluted.

Why it feels hard

Organic numericals feel unfamiliar if you only practised MCQ mechanisms.

What to practise

Convert two named reactions per week into a numerical ask (moles, isomers, mass).

Open 2022 year review →
Chemistry2021 · Paper 1 · Q5–Q9linked-numerical

Organic linked NUM + Physical thermo/mixed

Organic named/reactions (linked)+Physical thermodynamics+Metallurgy / mixed Physical

Knowledge bridge

Step 1: resolve the Organic linked numerical using reaction stoichiometry. Step 2: switch to thermo/mixed Physical NUMs with fresh variables. Step 3: keep metallurgy facts (if present) as recall, not calculation, items.

Why it feels hard

Branch switching inside one NUM section.

What to practise

Label each Chem NUM as Org/Phy/Inorg in the margin before solving.

Open 2021 year review →
Chemistry

Other portions

PhysicalInorganic
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