RRB Group D Study Notes 2026: Subject-Wise Revision Guide
Subject-wise notes for Science, Maths, Reasoning and GK, with a revision plan built for the CBT.
RRB Group D study notes turn a wide syllabus into short material you can revise again and again. The CBT has 100 questions across four subjects, and many of them test one clear fact, formula or pattern. That makes good notes one of the most useful tools in your preparation, especially for General Science, which is based on Class 10 NCERT.
What RRB Group D Study Notes Should Cover
Subject | Marks | What your notes should hold |
|---|---|---|
General Science | 25 | Chapter summaries from NCERT Class 9–10, formulas, units, chemical formulas, organ functions, diseases and vitamins |
Mathematics | 25 | Formulas, shortcut methods, squares and cubes, percentage-fraction conversions, solved examples |
Reasoning | 30 | Question types with one solved example each, coding rules, direction and blood-relation tricks |
General Awareness | 20 | Monthly current affairs, sports, awards, schemes, static GK tables |
High-Yield General Science Facts
These are the kind of short facts Group D questions often test. Keep a table like this in your notes.
Topic | Key fact |
|---|---|
Electricity | Ohm's law: V = IR. SI unit of resistance is the ohm |
Force | SI unit of force is the newton. Weight = mass × acceleration due to gravity |
Work and energy | SI unit of work and energy is the joule; of power, the watt |
Light | A concave lens corrects myopia (short-sightedness); a convex lens corrects hypermetropia |
Acids and bases | pH 7 is neutral; below 7 is acidic; above 7 is basic |
Chemistry | Chemical formula of common salt is NaCl; of baking soda, NaHCO3 |
Biology | Mitochondria are the site of cellular respiration |
Human body | Vitamin C deficiency causes scurvy; vitamin D deficiency causes rickets |
Essential Maths Notes
Topic | Formula or rule |
|---|---|
Percentage | x% of y = (x × y) / 100 |
Profit and loss | Profit % = (Profit / Cost price) × 100 |
Simple interest | SI = (P × R × T) / 100 |
Speed | Speed = Distance / Time; to convert km/h to m/s, multiply by 5/18 |
Time and work | If A finishes work in a days, A's one-day work = 1/a |
Mensuration | Area of a circle = πr²; volume of a cylinder = πr²h |
Also keep tables of squares up to 30, cubes up to 15 and common fraction-to-percentage values (for example, 1/8 = 12.5%).
Reasoning Notes That Actually Help
Reasoning is about patterns, so your notes should record methods, not theory:
Coding-decoding: Write the alphabet with position numbers (A = 1 to Z = 26) and reverse positions (A = 26).
Directions: Draw a small compass once, and note that turning right from north means facing east.
Blood relations: Use symbols (+ for male, − for female) and draw family trees.
Series: List common patterns such as squares, cubes, alternate steps and differences.
Syllogism: Use Venn diagrams for every statement.
General Awareness Notes
Make one page per month for current affairs, with headings for sports, awards, appointments, schemes and science.
Keep static GK in tables: important days, national parks, dances by state, first in India, books and authors.
Revise the last 6 to 12 months of current affairs before the exam.
How to Make Your Own RRB Group D Notes
Read first, write later: Finish a chapter, then write only what you are likely to forget.
Keep it short: One page per science chapter and one page per maths topic is enough.
Use tables and lists: They are faster to revise than paragraphs.
Add your mistakes: After every mock test, add the facts or question types you got wrong.
Revise on a schedule: Revise each page after 1 day, 1 week and 1 month.
A Simple Revision Plan
Time before exam | Revision focus |
|---|---|
8–12 weeks | Complete notes subject by subject alongside study |
4–8 weeks | Weekly revision of all science and maths notes |
Last 4 weeks | Daily quick revision of formulas, science facts and current affairs |
Last 3 days | Mistake notebook and high-yield tables only |
Common Note-Making Mistakes
Copying whole chapters: Long notes take as much time to revise as the textbook. Write only what you are likely to forget.
Mixing subjects on one page: Keep separate sections for Science, Maths, Reasoning and GA so revision stays quick.
Never updating notes: Notes should grow with every mock test. Add new facts and mistakes each week.
Skipping diagrams: For topics such as the human eye, the heart or electric circuits, a small labelled sketch is faster to recall than text.
Collecting too many sources: One set of notes per subject, revised often, works better than five sets read once.
A Chapter Checklist for Science Notes
Tick each chapter once your one-page summary is ready:
Physics: Motion; Force and laws of motion; Gravitation; Work and energy; Sound; Light; Human eye; Electricity; Magnetic effects of current
Chemistry: Matter; Atoms and molecules; Structure of the atom; Chemical reactions; Acids, bases and salts; Metals and non-metals; Carbon compounds; Periodic classification
Biology: Cell; Tissues; Diversity in living organisms; Life processes; Control and coordination; Reproduction; Heredity; Our environment; Natural resources