RRB ALP Syllabus 2026 – Complete Stage-wise Guide: CBT 1, CBT 2, CBAT & Trade Test

The RRB ALP (Assistant Loco Pilot) selection process in 2026 under CEN 01/2024 has five distinct stages — and understanding each stage precisely matters because failing any one stage can eliminate you even if you score 90% in the others. This is not a two-exam competition like SSC CGL or IBPS PO. You must clear CBT 1, then qualify CBT 2 Part A (to shortlist), pass CBT 2 Part B Trade Test (to stay in the ALP race), and then clear the Computer Based Aptitude Test (CBAT) — without which you cannot be considered for ALP even with the highest score in the country. Only after all four stages do Document Verification and Medical apply.

This guide breaks down every subject, every topic, and every mark for each stage — including the CBAT structure, which most preparation guides either ignore or handle too vaguely to be useful.

Selection Process — All 5 Stages at a Glance

One important clarification: CBT 2 Part A and Part B are conducted on the same day in two separate sessions. Part A scores are used for merit ranking. Part B Trade Test scores are qualifying only — you must score minimum 35% to remain in the ALP merit list, but the Part B marks do not count toward your final rank. If you fail Part B (score below 35%), you are considered only for Technician posts, not ALP.

CBT 1 Syllabus — Screening Stage

CBT 1 is a screening stage — its purpose is to reduce the applicant pool for CBT 2. The cutoff for CBT 1 is not very high historically (30–40 marks out of 75 in many divisions), but you cannot take CBT 1 lightly because competition for CBT 2 slots is stiff given 18,799 ALP vacancies against crores of applicants. The CBT 1 score is NOT used for final merit — only CBT 2 Part A score counts for rank.

CBT 1 — Mathematics (20 Questions)

Mathematics in CBT 1 is at Class 10 level difficulty. Topics covered:

• Number System — LCM, HCF, divisibility, prime factorisation
• BODMAS — order of operations, simplification
• Decimals and Fractions — operations, conversions
• Ratio and Proportion — direct/inverse proportion, partnership
• Percentages — profit/loss, discount, successive percentages
• Simple Interest and Compound Interest
• Time and Work — pipes and cisterns, efficiency problems
• Time, Speed, and Distance — trains, boats and streams
• Mensuration — area, perimeter, volume (2D and 3D shapes)
• Age Calculations
• Algebra — linear equations, basic identities
• Geometry — angles, triangles, circles, parallel lines
• Trigonometry — sin/cos/tan values, height and distance (basic)

CBT 1 — General Intelligence & Reasoning (25 Questions)

• Analogies — word analogies, letter analogies, number analogies
• Alphabetical and Number Series — find missing term, complete the series
• Coding-Decoding — letter shifting, number codes
• Mathematical Operations — BODMAS-based logic
• Jumbling — rearranging letters or words
• Venn Diagrams — finding relationships between sets
• Data Interpretation — pie charts, bar graphs, line graphs (basic)
• Conclusions and Decision Making
• Similarities and Differences
• Spatial Awareness — mirror images, rotation, paper folding
• Odd One Out
• Blood Relations
• Directions and Distances
• Statement and Arguments (basic logical reasoning)

CBT 1 — General Science (20 Questions)

Strictly Class 10 NCERT level — Physics, Chemistry, and Biology:

• Physics: Units and Measurements, Motion (Newton's laws), Work, Power and Energy, Gravitation, Electricity (Ohm's law, circuits), Magnetism, Light (reflection, refraction, lenses), Sound (waves, echo)
• Chemistry: Matter and its States, Elements and Compounds, Chemical Reactions, Acids, Bases and Salts, Metals and Non-Metals, Carbon Compounds, Atomic Structure (basics)
• Life Sciences (Biology): Human Body Systems (digestive, circulatory, respiratory), Nutrition, Diseases and their Causes, Plant Kingdom basics, Genetics basics

CBT 1 — General Awareness / Current Affairs (10 Questions)

• Current national and international events (last 6–12 months)
• Sports — recent tournaments, Indian achievements
• Indian geography — rivers, mountain ranges, states
• Indian history — freedom struggle, major events
• Indian polity — constitution, fundamental rights, governance
• Science and Technology news
• Railway GK — zones, speed records, Vande Bharat routes, important Railway stations

CBT 2 Part A Syllabus — Merit Ranking Stage

CBT 2 Part A is the stage that determines your final ALP rank. It is harder than CBT 1 and adds one critical new subject — Basic Science and Engineering (BSE) — which has no parallel in CBT 1. The Mathematics and Reasoning sections are also at a higher difficulty level. You must take every question seriously here because this score alone drives your position in the merit list.

CBT 2 Part A — Basic Science and Engineering (75 Questions)

BSE is the subject that differentiates ALP preparation from standard railway exam preparation. It tests engineering fundamentals — primarily relevant to running a locomotive. The key topics:

• Engineering Drawing: First-angle and third-angle projections, orthographic views, isometric views, symbols used in technical drawings, dimensioning
• Units and Measurements: SI units, conversions, derived units, measuring instruments (Vernier callipers, micrometer screwgauge)
• Mass, Weight, Density: Definitions, relationships, buoyancy, Archimedes' principle
• Work, Power, Energy: Kinetic and potential energy, conservation of energy, power calculations
• Heat and Temperature: Temperature scales (Celsius, Kelvin, Fahrenheit), modes of heat transfer (conduction, convection, radiation), specific heat capacity, latent heat, thermal expansion
• Fluid Dynamics Basics: Pressure, Pascal's law, Bernoulli's principle, viscosity
• Basic Electricity: Ohm's law, Kirchhoff's laws, series and parallel circuits, electrical power and energy, AC and DC concepts, EMF, resistance, capacitance basics
• Basic Electronics: Diodes (P-N junction), transistors (NPN/PNP, common emitter), rectifier circuits, basic logic gates (AND, OR, NOT, NAND, NOR)
• Engineering Mathematics: Algebra (polynomials, quadratic equations), Trigonometry (identities, sine rule, cosine rule), basic coordinate geometry, matrices (addition, multiplication)
• Computer Basics: Hardware components, software types, operating systems, input/output devices, binary number system, basic networking

CBT 2 Part A — Mathematics (100 Questions)

All CBT 1 Mathematics topics are included, plus higher-difficulty variants and these additional areas:

• Quadratic Equations and Polynomials
• Coordinate Geometry — distance formula, section formula, area of triangle
• Progressions — Arithmetic Progression (AP) and Geometric Progression (GP)
• Probability — basic probability, complementary events
• Statistics — mean, median, mode, standard deviation basics
• Permutations and Combinations (basic)
• Logarithms
• Higher-level Mensuration — frustum, cone, cylinder, sphere volumes
• More complex Trigonometry — identities, solution of triangles

CBT 2 Part B — Trade Test Syllabus (Qualifying, Min 35%)

Part B is the trade-specific test that ensures ALPs have domain knowledge relevant to railway operations. The trade you are assessed on depends on the ITI trade specified in your application. This test does not affect your ALP rank — but scoring below 35% means you lose your ALP candidature and can only be considered for Technician posts. Scoring 35% or above keeps you in the ALP merit list.

Candidates who hold a Diploma in Engineering (3-year polytechnic diploma in Electrical, Electronics, or Mechanical) instead of an ITI certificate appear for a trade test based on their diploma specialisation. The minimum passing score of 35% is the same regardless of the trade.

CBAT — Computer Based Aptitude Test (ALP Specific)

The CBAT is the most unique element of ALP selection — and the one that catches most candidates off guard. It is conducted only for ALP candidates (not for Technician). If you fail CBAT, you lose your ALP claim and are considered only for Technician posts (if your Part A score qualifies for that separate merit list). Passing CBAT is mandatory for ALP appointment, regardless of how high your CBT 2 Part A score is.

The CBAT is a psychometric and cognitive ability test, not a knowledge test. The minimum passing score is 42 out of 100. The test is adaptive in design — the difficulty of questions adjusts based on your responses. There is no specific syllabus you can "study" for CBAT the way you study Mathematics, but understanding what it tests lets you practise the right type of tasks.

Effective CBAT preparation involves practising spatial rotation puzzles (paper folding, cube rotation exercises), working memory exercises (number sequences, object recall under time pressure), sustained attention tasks (track a specific element in a moving field), and general mental speed building. Several Railway exam coaching institutes offer CBAT-specific practice packages. Online tools for cognitive training (N-back tasks, dual-task exercises) also help build the underlying skills.

Topic-wise Preparation Strategy

Where to Spend Your Time (Subject Priority)

Best Books and Resources for Each Subject

• Mathematics: R.S. Aggarwal — Quantitative Aptitude (for CBT 1 and CBT 2 both). For CBT 2 higher level: NCERT Class 11–12 Mathematics (select chapters).
• Reasoning: R.S. Aggarwal — Verbal and Non-Verbal Reasoning. M.K. Pandey — Analytical Reasoning for advanced patterns.
• General Science (CBT 1): NCERT Class 9–10 Science (all three parts). Stick strictly to NCERT — no need to go beyond for CBT 1 General Science.
• Basic Science and Engineering (CBT 2): NCERT Class 11–12 Physics (select chapters on electricity, magnetism). ITI trade-related theory books. Standard Engineering Drawing textbook (N.D. Bhatt).
• General Awareness: Monthly current affairs magazines (Pratiyogita Darpan, Competition Success Review). Railway GK from dedicated Railway exam preparation books.
• CBAT: Dedicated ALP CBAT practice apps and coaching institute materials. Online cognitive training tools.
• Trade Test (Part B): Your ITI textbooks and NCVT study materials for the specific trade. Past question papers if available from the trade testing authority.

Exam Pattern Summary — At a Glance

Frequently Asked Questions

Q: If I fail CBAT, can I still get a Railway job through RRB ALP 2026?

Yes — but not as ALP. If you fail CBAT but your CBT 2 Part A score is high enough to appear in the Technician merit list, and you cleared Part B Trade Test at 35%, you will be considered for Technician posts. Technician posts are at Pay Level 2 (same as ALP) but without Running Allowance — so the monthly in-hand is lower. The ALP post specifically requires CBAT clearance as a safety requirement for train-running roles.

Q: Is CBT 2 Part B Trade Test marks added to the final merit?

No. Part B Trade Test is purely qualifying — minimum 35% to retain ALP candidature. Whether you score 35% or 100% in Part B, only your CBT 2 Part A score determines your final rank in the ALP merit list. This means candidates should focus primarily on Part A preparation while ensuring they can comfortably clear the 35% threshold in Part B.

Q: Which subject should I prioritise most for CBT 2 Part A?

Basic Science and Engineering (BSE) — it carries 75 questions (43% of Part A marks) and is the subject most candidates underestimate. Many ALP aspirants come from ITI backgrounds where they have some BSE knowledge, but the exam tests it at a level slightly above what typical ITI coursework covers. Mathematics (100 questions) is the other major component. Between BSE and Mathematics, these two subjects account for 175 out of 175 Part A marks — meaning Reasoning and General Awareness questions are a bonus on top of your core two subjects.

Q: Is there negative marking in CBT 2 Part B Trade Test?

No. CBT 2 Part B Trade Test has no negative marking. This means you should attempt all 75 questions even if you are not certain about some answers. There is nothing to lose by marking an answer in Part B. The no-negative-marking policy is specifically to ensure candidates are not disadvantaged by attempting Trade questions they are borderline confident about.

Q: What is the CBAT minimum score, and what happens if I score 41 out of 100?

The minimum qualifying score in CBAT is 42 out of 100. Scoring 41 means you fail CBAT — regardless of your CBT 2 Part A rank. You would then be considered for Technician posts (not ALP) based on your Part A score. There is no re-test option for CBAT within the same CEN cycle. CBAT scores are not normalised or scaled — 42 marks is a fixed absolute threshold.

RRB ALP Syllabus 2026 – CBT 1, CBT 2, CBAT और Trade Test की पूरी Stage-wise जानकारी

RRB ALP (Assistant Loco Pilot) 2026 का selection process CEN 01/2024 के तहत 5 चरणों में होता है। सिर्फ CBT 1 और CBT 2 पास करना काफी नहीं है — CBAT (Computer Based Aptitude Test) में भी qualify करना अनिवार्य है, बिना जिसके ALP post नहीं मिल सकती। साथ ही CBT 2 Part B Trade Test में कम से कम 35% लाना जरूरी है। हर stage की तैयारी अलग तरह की होती है — इसलिए पूरे syllabus को एक साथ समझना ज़रूरी है।

इस आर्टिकल में आप जानेंगे — हर stage का pattern, marks, duration, negative marking, और topic-wise syllabus। CBAT की विशेष तैयारी कैसे करें — वह भी।

Selection Process — सभी 5 Stages एक नज़र में

महत्वपूर्ण: CBT 2 Part A का score ही final ALP merit rank तय करता है। Part B सिर्फ qualifying है — 35% से कम मिलने पर ALP candidature खत्म, सिर्फ Technician post के लिए consider होते हैं। CBAT fail करने पर भी ALP नहीं मिलता — सिर्फ Technician मिल सकता है।

CBT 1 Syllabus — Screening Stage

CBT 1 का मुख्य उद्देश्य CBT 2 के लिए candidates को short-list करना है। इसका score final merit में नहीं जुड़ता। लेकिन competition बहुत कड़ी है — इसलिए इसे हल्के में न लें।

CBT 1 — Mathematics (20 प्रश्न)

• Number System — LCM, HCF, divisibility, prime numbers
• BODMAS — simplification, order of operations
• Decimals और Fractions — operations, conversions
• Ratio और Proportion — direct/inverse proportion, partnership
• Percentages — profit/loss, discount
• Simple Interest और Compound Interest
• Time और Work — pipes and cisterns, efficiency
• Time, Speed, Distance — trains, boats and streams
• Mensuration — area, perimeter, volume (2D और 3D)
• Age Calculations
• Algebra — linear equations, basic identities
• Geometry — angles, triangles, circles
• Trigonometry — basic values, height and distance

CBT 1 — General Intelligence & Reasoning (25 प्रश्न)

• Analogies — word, letter, number analogies
• Number और Alphabetical Series — missing term
• Coding-Decoding — letter shifting, number codes
• Mathematical Operations
• Jumbling — rearranging letters/words
• Venn Diagrams
• Spatial Awareness — mirror images, rotation, paper folding
• Odd One Out
• Blood Relations
• Directions और Distances
• Puzzle
• Non-Verbal Series

CBT 1 — General Science (20 प्रश्न)

• Physics: Units, Motion (Newton's laws), Work/Power/Energy, Electricity (Ohm's law), Magnetism, Light, Sound
• Chemistry: Matter, Elements/Compounds, Chemical Reactions, Acids/Bases/Salts, Metals/Non-Metals, Atomic Structure (basics)
• Life Sciences (Biology): Human Body Systems, Nutrition, Diseases, Plants basics, Genetics basics

General Science के लिए सिर्फ NCERT Class 9–10 Science पर्याप्त है — इससे आगे जाने की ज़रूरत नहीं।

CBT 2 Part A Syllabus — Merit Ranking Stage

CBT 2 Part A का score ही आपकी final ALP rank तय करता है। यहाँ एक नया और सबसे important subject जुड़ता है — Basic Science and Engineering (BSE) — जिसका CBT 1 में कोई parallel नहीं था। Mathematics और Reasoning भी यहाँ harder होते हैं।

CBT 2 Part A — Basic Science and Engineering (75 प्रश्न)

BSE ALP की तैयारी का सबसे अलग और challenging हिस्सा है। Topics:

• Engineering Drawing: First/Third angle projection, orthographic views, isometric views, technical symbols, dimensioning
• Units और Measurements: SI units, conversions, Vernier callipers, micrometer
• Mass, Weight, Density: Buoyancy, Archimedes' principle
• Work, Power, Energy: Kinetic/potential energy, conservation of energy
• Heat और Temperature: Temperature scales, heat transfer (conduction/convection/radiation), specific heat, latent heat, thermal expansion
• Fluid Dynamics: Pressure, Pascal's law, Bernoulli's principle
• Basic Electricity: Ohm's law, Kirchhoff's laws, series/parallel circuits, AC/DC, EMF, capacitance basics
• Basic Electronics: P-N junction diode, transistors (NPN/PNP), rectifiers, logic gates (AND/OR/NOT/NAND/NOR)
• Engineering Mathematics: Algebra, Trigonometry (identities, sine/cosine rule), Coordinate Geometry, Matrices
• Computer Basics: Hardware/software, OS, binary number system, networking basics

CBT 2 Part A — Mathematics (100 प्रश्न)

CBT 1 के सभी topics शामिल हैं, plus:

• Quadratic Equations और Polynomials
• Coordinate Geometry — distance formula, area of triangle
• Arithmetic Progression (AP) और Geometric Progression (GP)
• Probability — basic probability
• Statistics — mean, median, mode, standard deviation
• Permutations और Combinations (basic)
• Logarithms
• Advanced Mensuration — frustum, cone, sphere volumes
• Advanced Trigonometry — identities, solution of triangles

CBT 2 Part B — Trade Test Syllabus (Qualifying, Min 35%)

Part B Trade Test आपके ITI trade या Diploma specialisation के आधार पर होता है। इसका score ALP rank में नहीं जुड़ता — लेकिन 35% से कम आने पर ALP candidature खत्म हो जाती है।

Part B में negative marking नहीं है — इसलिए सभी 75 प्रश्नों को attempt करें। सभी trade-related questions आपके ITI के NCVT theory notes से cover हो जाते हैं।

CBAT — Computer Based Aptitude Test (ALP के लिए अनिवार्य)

CBAT केवल ALP candidates के लिए होता है — Technician के लिए नहीं। CBAT fail करने पर ALP नहीं मिलता, चाहे CBT 2 Part A score कितना भी अच्छा हो। Minimum qualifying score: 42/100। यह test psychometric और cognitive ability जाँचता है — knowledge नहीं।

CBAT की तैयारी के लिए: Spatial rotation puzzles (paper folding, cube rotation), N-back memory exercises, sustained attention tasks (moving target tracking), और cognitive speed building tasks practice करें। कई Railway coaching institutes CBAT-specific practice material provide करते हैं।

Subject Priority — समय कहाँ लगाएं?

Subject-wise Best Books

• Mathematics: R.S. Aggarwal — Quantitative Aptitude। CBT 2 higher level: NCERT Class 11–12 (select chapters)
• Reasoning: R.S. Aggarwal — Verbal and Non-Verbal Reasoning
• General Science (CBT 1): NCERT Class 9–10 Science — strictly इसी तक रहें
• BSE (CBT 2): NCERT Class 11–12 Physics (Electricity/Magnetism chapters), ITI theory books, N.D. Bhatt — Engineering Drawing
• General Awareness: Monthly current affairs magazine + Railway GK book
• CBAT: Coaching institute के CBAT practice sets + online cognitive training tools
• Trade Test (Part B): NCVT trade theory notes और past trade test papers

Exam Pattern Summary — एक नज़र में

अक्सर पूछे जाने वाले प्रश्न

Q: CBAT fail करने पर क्या होता है?

CBAT fail करने पर आप ALP नहीं बन सकते — भले ही आपका CBT 2 Part A score बहुत अच्छा हो। लेकिन अगर आपने Part B Trade Test में 35% qualify किया है और CBT 2 Part A score Technician merit list के लिए पर्याप्त है, तो आपको Technician post मिल सकती है। Technician Level 2 post है — ALP की तरह — लेकिन Running Allowance नहीं मिलता, इसलिए monthly in-hand कम होती है।

Q: क्या CBT 2 Part B का score ALP rank में जुड़ता है?

नहीं। Part B Trade Test सिर्फ qualifying है — 35% minimum pass करना ज़रूरी है। Part B में 35% हो या 100%, ALP merit rank में फर्क नहीं पड़ता। Rank पूरी तरह CBT 2 Part A score से तय होती है। इसलिए Part A पर ज़्यादा focus करें और Part B में सिर्फ 35%+ score का लक्ष्य रखें।

Q: CBT 2 Part A में सबसे ज़्यादा किस subject पर ध्यान दें?

Basic Science and Engineering (BSE) — 75 questions (43% of Part A)। यह subject ज़्यादातर candidates under-prepare करते हैं। Mathematics (100 questions) भी equally important है। इन दोनों को मिलाकर 175 में से 175 marks आते हैं — Reasoning और General Awareness इसके ऊपर bonus हैं। BSE और Math में strong foundation होने पर Part A में अच्छा rank आना आसान हो जाता है।

Q: क्या Part B Trade Test में Negative Marking होती है?

नहीं। CBT 2 Part B Trade Test में कोई negative marking नहीं है। इसलिए सभी 75 प्रश्नों को attempt करें — चाहे आप किसी answer के बारे में पूरी तरह confirm न हों। Part B में सभी questions attempt करना safe strategy है।

Q: CBAT में 41/100 आने पर क्या होगा?

CBAT minimum qualifying score 42/100 है — absolute threshold। 41 आने पर CBAT fail माना जाएगा और ALP नहीं मिलेगा। CBAT score normalised नहीं होता। उसी CEN cycle में re-test का भी option नहीं होता। CBAT की तैयारी को serious लेना ज़रूरी है — cognitive training exercises नियमित रूप से करें।

Part B Technical — Sahi Trade Choose Karna Zaroori Hai

CBT 2 ke Part B mein aapko apni ITI trade ya diploma discipline choose karni hoti hai. Yeh important decision hai — ek baar trade choose karne ke baad change nahi ho sakti.

• Electrician trade: Agar aapne Electrician ITI ki hai, wahi choose karein — familiar concepts mein zyada score milta hai
• Diploma holders: Diploma (Electrical/Mechanical/Electronics) waale bhi choose kar sakte hain
• Part B qualifying nature: Part B sirf qualify karna hai (40% minimum marks) — merit sirf Part A se banti hai

Aksar Puche Jane Wale Prashn

Q: RRB ALP CBT 2 mein 40% se kam aaya — kya ho sakta hai?

Agar Part B mein 40% se kam score aata hai, to candidate selection ke liye eligible nahi hoga — chahe Part A mein kitna bhi achha score ho. Part B qualifying gate hai — bina pass kiye aage nahi ja sakte. Isiliye apni trade ke basic concepts clearly samajh lein — Ohm's law, motors, transformers (Electrician ke liye), ya equivalent apni trade ke concepts. Yeh koi mushkil cutoff nahi hai — bas basic technically sound hona zaroori hai.

Q: Kya ALP CBAT (Computer Based Aptitude Test) mein fail hona possible hai?

CBAT psychometric test hai jo perceptual abilities, spatial abilities, aur memory check karta hai — ispe fail candidates ko Loco Pilot career path nahi milta (sirf Technician Grade 3 diya jaata hai). CBAT practice ke liye railways ke practice tests ya online spatial reasoning tests helpful hain. Is test ko typically candidates underestimate karte hain — isko seriously lena chahiye.