Chemistry accounts for roughly 6–7 questions in RRB Group D General Science — and unlike Physics, most of these are pure fact-recall. No formulas to apply, no calculations. Just the right facts, memorized correctly.
The problem most aspirants face is studying broad Chemistry theory instead of the specific MCQ patterns RRB actually repeats. This guide cuts through that noise.
🎯 Quick Answer (30-Second Read)
- Chemistry contributes approximately 6–7 questions in RRB Group D General Science (20 questions total)
- Most tested areas: acids & bases, metals & non-metals, chemical reactions, periodic table basics
- pH of pure water = 7; pH below 7 = acidic, above 7 = basic — asked directly every cycle
- Rusting of iron (oxidation) and baking soda (NaHCO₃) are among the most repeated fact MCQs
- Focus on chemical names of everyday substances — RRB loves formula-to-name identification
Source: RRB Group D Official Syllabus — indianrailways.gov.in
Most Asked MCQs: Acids, Bases and pH
pH-related questions are the single most repeated Chemistry MCQ type in RRB Group D. Memorize this entire block:
| Substance | Chemical Name | pH / Nature |
|---|---|---|
| Lemon juice | Citric acid | ~2, Acidic |
| Vinegar | Acetic acid | ~3, Acidic |
| Pure water | H₂O | 7, Neutral |
| Baking soda | Sodium bicarbonate (NaHCO₃) | ~8.3, Basic |
| Washing soda | Sodium carbonate (Na₂CO₃) | ~11, Basic |
| Bleaching powder | Ca(OCl)Cl | Basic |
Source: NCERT Class 10 Science, Chapter 2 — Acids, Bases and Salts
Most Asked MCQs: Metals, Non-Metals and Everyday Chemistry
RRB Group D Chemistry MCQs heavily favour real-world chemical applications. These are the highest-frequency fact questions from previous year papers (2018–2023):
Metals and their properties
Everyday chemical substances RRB loves
Rahul from Patna scored 33/35 in RRB Group D General Science (2022) by making two-sided flashcards of exactly these chemical name–formula pairs and reviewing them during his daily commute for three weeks.
Most Asked MCQs: Chemical Reactions and Periodic Table
⚗️ Chemical Reactions
RRB tests reaction types through application examples, not equations:
- Rusting = slow oxidation (iron + oxygen + water)
- Combustion = rapid oxidation releasing heat and light
- Photosynthesis = endothermic reaction (energy absorbed)
- Respiration = exothermic reaction (energy released)
- Neutralisation = acid + base → salt + water
📊 Periodic Table Basics
RRB doesn't test deep periodic table knowledge — only these specific facts:
- Total elements in periodic table: 118
- Most electronegative element: Fluorine
- Noble gases are in Group 18 — chemically inert
- Atomic number of: Hydrogen = 1; Gold = 79; Iron = 26
People Also Search For
What science topics are important for RRB Group D?
Important topics include basic Physics, Chemistry, and Biology from NCERT level. Focus on motion, force, work, energy, atoms, chemical reactions, acids and bases, and human body systems. Questions are mostly concept-based and straightforward. Regular revision and practice of previous year papers are essential.
Are there tricks to answering chemistry MCQs?
Yes, focus on understanding basic concepts and formulas instead of rote learning. Use elimination method to remove wrong options quickly. Pay attention to units, chemical equations, and periodic trends. Practice MCQs regularly to improve speed and accuracy.
What are the important topics for RRB Group D reasoning?
Key topics include number series, analogies, coding-decoding, puzzles, syllogism, and blood relations. Questions are usually easy to moderate and test logical thinking. Practice regularly to improve speed and accuracy. Time management is important to attempt all questions.
What are RRB Group D general science questions?
These questions cover basic concepts from Physics, Chemistry, and Biology. Most questions are theory-based and directly asked from standard topics. They test understanding of everyday science and fundamental principles. Practicing previous year questions helps in scoring well.
What are RRB Group D chemistry questions?
Chemistry questions focus on basic topics like atomic structure, chemical reactions, acids, bases, salts, and periodic table. They are mostly concept-based and easy to moderate in difficulty. Regular MCQ practice and revision of formulas help improve performance.
Conclusion: Your Next Step
RRB Group D Chemistry MCQs reward preparation that is narrow and precise. Cover the pH table, metal properties, chemical names of everyday substances, reaction types, and the handful of periodic table facts above — and you've addressed everything this exam has asked across six years of papers.
Ready to complete your RRB Group D General Science preparation? Explore PrepGrind's RRB Group D Chemistry module — topic-wise MCQ banks, previous year question analysis, and rapid-revision fact sheets built specifically for RRB aspirants.