Everything here starts from the official scheme in the Railway Recruitment Boards' notice for Junior Engineer, Depot Material Superintendent and Chemical and Metallurgical Assistant, CEN 04/2026. Facts from the notice are cited; advice that is ours is labelled as ours. Marks and timing are on the exam pattern page and the topic list is on the syllabus page.
A note on timing. CBT-1 of CEN 04/2026 was held on 27 and 28 October and 2 November 2026. If you sat it, section 9 is for you. If you are preparing for the next notice, the plan below is built on the same CBT-1 scheme that both CEN 05/2025 and CEN 04/2026 printed. A future notice can change it, so re-check when it comes.
1. Know where the marks are
| CBT-1 section | Questions | Share |
|---|---|---|
| Mathematics | 30 | 30% |
| General Science | 30 | 30% |
| General Intelligence and Reasoning | 25 | 25% |
| General Awareness | 15 | 15% |
| Total | 100 |
CBT-1 only screens, but you cannot reach CBT-2 without it. Our note: engineering candidates often treat General Science as easy and under-prepare it. On the numbers it is as large as Mathematics and twice the size of General Awareness. The CEN limits it to Physics, Chemistry and Life Sciences up to Class 10, which is a small, finite syllabus. That makes it the most reliable 30 questions in the paper if you actually revise it, Life Sciences included.
The CEN calls the split indicative, so keep a small buffer for variation.
2. Know the cut-off scale
Published CBT-1 cut-offs are out of 100 and set board by board. In the CEN 05/2025 sheets we read (declared 13 May 2026), the UR cut-off for JE Civil (P.Way and Bridge) was 72.4643 at RRB Secunderabad and 72.1786 at RRB Kolkata, against a qualifying floor of 40% for UR. Other posts and boards were higher or lower; see cut-offs. Our note: the floor tells you almost nothing. Treat the published figures as the distance to cover, and remember they are normalised marks from a different paper.
3. Know your time per question
| Paper | Questions | Duration | Seconds per question |
|---|---|---|---|
| CBT-1 | 100 | 90 minutes | 54 |
| CBT-2 | 150 | 120 minutes | 48 |
This is arithmetic. Our note: General Science and General Awareness items are usually quick, because you either know the fact or you do not. Time saved there pays for Mathematics. Practise a first pass that takes every question you can finish in about 30 seconds, then return to the longer calculations.
The CEN bans calculators and offers a virtual calculator only in the 2nd Stage CBT. So CBT-1 Mathematics is mental and on-screen arithmetic. Practise it that way.
4. Decide when to guess
Marking is +1 for a right answer and −1/3 for a wrong one.
- Break-even chance of being right is 25%: 0.25 − 0.75 × 1/3 = 0.
- After eliminating one of four options (about 33%), the expected gain is +0.11 per question.
- After eliminating two (50%), it is +0.33.
This is arithmetic from the marking scheme, not a rule from RRB. Track your "guess accuracy" in the mock log (section 7) and adjust from your own data.
5. A four-phase plan for CBT-1
Move between phases on mock results, not on dates.
Phase 1: Foundation. Go through the syllabus section by section. For Mathematics, begin with number work and the arithmetic topics the CEN names: percentages, ratio and proportion, profit and loss, interest, time and work, pipes and cistern, time and distance. For General Science, read Class 9 and Class 10 Physics, Chemistry and Biology chapter by chapter and make one page of notes per chapter. Start a short daily current-affairs habit for General Awareness.
Phase 2: Topic practice. Untimed sets by topic, then lightly timed ones. Accuracy first. Pareeksha's topic-wise practice is organised by topic (Pro), so you can see which topic leaks marks.
Phase 3: Timed sections. Practise one section at a time against a clock set to 54 seconds a question: 27 minutes for 30 Mathematics questions, 22 to 23 minutes for 25 Reasoning questions. Add the Reasoning topics that are easy to skip but named in the CEN: data interpretation and sufficiency, statement arguments and assumptions, directions, classification.
Phase 4: Full mocks and analysis. Sit full 100-question papers in 90 minutes, in one sitting. Spend as long analysing each mock as you spent sitting it.
6. Section tactics from the syllabus
- Mathematics: the CEN names school-level topics, including algebra, geometry, trigonometry, mensuration and elementary statistics, plus calendar and clock and age calculations. Keep a one-page formula sheet and revise it on a schedule. Diploma holders are usually comfortable with trigonometry and mensuration; the marks are more often lost in arithmetic speed.
- General Science: stay inside the Class 10 boundary the CEN sets. Do not spend CBT-1 time on diploma-level physics. Do not skip Life Sciences because it is not your branch.
- Reasoning: the list is verbal and analytical. Series, coding, syllogism, Venn diagrams and relationships are quick marks once practised.
- General Awareness: 15 questions. The CEN names current affairs, geography, culture and history including the freedom struggle, polity and constitution, economy, environmental issues, sports, and scientific and technological developments. Read daily in short sessions and revise weekly. The free Daily Dangal quiz fits this habit.
7. A weekly mock-analysis routine
After each mock, write each wrong or skipped question into a log with one tag:
- Concept gap: you did not know the idea. Study it, then do 10 questions.
- Formula or fact slip: you knew it but misremembered. Put it on the revision sheet.
- Time: you ran out of time. Practise that section against its clock.
- Careless: misread the question or option. Slow the first read, not the whole paper.
- Bad guess: you guessed and lost marks. Guess only after elimination (section 4).
Count the tags weekly. The largest tag is next week's work. Compare your percentile, not just your marks: on Pareeksha every candidate in a cohort sits the same fixed paper, so percentile shows where you stand on identical questions. See how it works. RRBs normalise multi-session papers, so a raw mock score is not directly comparable with a published cut-off.
8. Choosing an RRB and posts
Per the CEN, you can apply to only one RRB, your preferences for zones and posts apply within that RRB, and options once exercised are final. The CBT-1 sheets of the last cycle show the same post closing several marks apart at different boards (JE S and T Signal UR: 68.40278 at Bhopal, 81.25 at Kolkata). Posts also differ in medical standard, from A-3 to C-1, and the CEN says a candidate found medically unfit for an opted post gets no alternative appointment. Our note: read Annexure A and Annexure B of the notice for your RRB before you fill preferences, and check the vision standard of each post against your own.
9. If you sat CBT-1 of CEN 04/2026
- The window to view your question paper, responses and keys, and to raise objections, is 11 to 17 November 2026 (23:59 hrs), per the RRB notice of 10 November 2026. The fee is ₹50 per question, refunded if the objection is found correct.
- The CBT-1 result and the CBT-2 date had not been announced as of 13 November 2026.
- CBT-2 is a different paper: 150 questions in 120 minutes, of which 100 are Technical Abilities for your exam group, 15 General Awareness, 15 Physics and Chemistry, 10 Basics of Computers and Applications and 10 Basics of Environment and Pollution Control. Technical Abilities is two-thirds of the marks.
- Our advice: do not wait for the result to restart your branch subjects. Work through your exam group's annexure in the CEN heading by heading, and add the two small sections (computers, environment) early because their syllabus is short and fully listed. In the last cycle, the CBT-1 result came on 13 May 2026 and CBT-2 was held on 2 July 2026, about seven weeks later. That is one data point, not a promise.
- Shortlisting for document verification uses the Merit Index from CBT-2, at 1:1 against vacancies. There is no stage after CBT-2 where marks can be recovered.
10. Free and paid practice on Pareeksha
- Free: a 10-question mini-mock to try the CBT-1 format, and the Daily Dangal quiz.
- Pro: full CBT-1 pattern mocks, previous-year papers and topic-wise practice.
The guide and mocks on Pareeksha for this exam are for CBT-1.
What this page does not have
- Chapter-wise weightage: the notice gives none and we do not estimate it.
- A CBT-2 technical study plan by branch. The syllabus headings are on the syllabus page; we have not written branch-wise plans.
- Study material recommendations. We have not tied advice to a book list.
- A target score. Cut-offs change with the paper, normalisation, vacancies and the RRB; we do not estimate a safe score.
Related: Syllabus · Exam pattern · Cut-offs