What is CBT-1 and CBT-2 in the RRB Exam?
The Railway Recruitment Board (RRB) exams are among the most popular exams in India, attracting millions of applicants aspiring to secure a position in the Indian Railways. The RRB exams for various posts, including the Junior Engineer (JE), Assistant Loco Pilot (ALP), and Non-Technical Popular Categories (NTPC), are divided into multiple stages. These stages usually include Computer-Based Test 1 (CBT-1) and Computer-Based Test 2 (CBT-2). Each of these tests has unique features, purposes, and requirements.
In this article, we will break down everything you need to know about CBT-1 and CBT-2 in the RRB exam, from their structure and syllabus to preparation strategies. Whether you’re a first-time aspirant or preparing for a second attempt, this detailed guide will help you understand and master the CBT stages of the RRB exam.
Understanding the Structure of RRB Exams.
The RRB exams for various technical and non-technical positions are structured to assess a candidate’s knowledge, skills, and aptitude required for the job. Typically, RRB exams are conducted in a two-stage Computer-Based Test (CBT) format, followed by further stages like Document Verification or Skill Tests for specific posts.
Each CBT stage is designed with a unique focus:
- CBT-1: A preliminary screening to filter candidates.
- CBT-2: A more in-depth examination tailored to the specific job requirements.
What is CBT-1 in the RRB Exam?
Structure and Duration
CBT-1 is the first stage of the RRB exam. It is a qualifying test, meaning that only candidates who clear CBT-1 can proceed to CBT-2. The purpose of CBT-1 is to screen candidates based on basic competencies across several subjects.
- Duration: 90 minutes (120 minutes for PWD candidates).
- Total Questions: 100
- Question Type: Multiple Choice Questions (MCQs)
Marking Scheme
| Section | Total | Marks |
Mathematics | 30 | 30 |
General Intelligence & Reasoning | 25 | 25 |
General Science | 25 | 25 |
General Awareness on Current Affairs | 20 | 20 |
Total | 100 | 100 |
Each question in CBT-1 carries 1 mark, and there is a negative marking of 0.33 marks for every incorrect answer.
Syllabus and Topic
The syllabus for CBT-1 is general and assesses a candidate’s basic knowledge:
- Mathematics: Number system, decimals, fractions, LCM and HCF, ratio and proportion, percentages, time and work, time and distance, etc.
- General Intelligence & Reasoning: Analogies, coding-decoding, series, syllogism, Venn diagrams, direction test, etc.
- General Science: Basic concepts from Physics, Chemistry, and Biology.
- General Awareness on Current Affairs: Current events, sports, awards, economy, and Indian Railways.
What is CBT-2 in the RRB Exam?
Structure and Duration
CBT-2 is the second stage and is only for candidates who clear CBT-1. The questions in CBT-2 are more specific to the job profile and test the advanced knowledge required for the position.
- Duration: 120 minutes (150 minutes for PWD candidates).
- Total Questions: 120
- Question Type: Multiple Choice Questions (MCQs)
Marking Scheme
Section | Total Questions | Marks |
General Awareness | 15 | 15 |
Physics & Chemistry | 15 | 15 |
Basics of Computers and Applications | 10 | 10 |
Basics of Environment & Pollution Control | 10 | 10 |
Technical Abilities | 70 | 70 |
Total | 120 | 120 |
Similar to CBT-1, each question in CBT-2 carries 1 mark, with a negative marking of 0.33 marks for incorrect answers.
Syllabus and Topics
CBT-2 has a more specialized syllabus focused on the job profile:
- General Awareness: Current events, awards, Indian economy, Indian Railways.
- Physics & Chemistry: Basic concepts and applications.
- Basics of Computers and Applications: Basic computer operations, MS Office, internet usage.
- Basics of Environment & Pollution Control: Basics of environment, pollution control measures.
- Technical Abilities: Questions specific to the field of Mechanical, Electrical, Civil, Electronics, etc.
Key Differences Between CBT-1 and CBT-2
Purpose and Focus
- CBT-1: A general screening test to qualify candidates for CBT-2.
- CBT-2: A job-specific test focusing on technical skills and advanced knowledge.
Level of Difficulty
- CBT-1: Moderately difficult, testing basic knowledge.
- CBT-2: More challenging, requiring specialized knowledge.
Selection Criteria
- CBT-1: Marks are used only for qualifying for CBT-2.
- CBT-2: Marks are considered for final merit listing, making it more critical.
Subject | CBT-1 Topics | CBT-2 Topics |
Mathematics | Number system, algebra, geometry, mensuration | Advanced topics based on post requirements |
General Intelligence | Series, coding-decoding, direction test | Logical reasoning, complex problem-solving |
General Science | Basic Physics, Chemistry, Biology | Applied concepts specific to the job field |
Current Affairs | National events, sports, Indian Railways | Advanced awareness relevant to job profile |
Technical Abilities | – | Field-specific (e.g., Mechanical, Electrical) knowledge |
Computers & Environment | – | Basic computing and environment awareness |
RRB Exams Preparation Tips for CBT-1 and CBT-2.
- Understand the Syllabus: Familiarize yourself with each section’s topics, especially for CBT-2.
- Time Management: Practice time-bound tests to improve speed and accuracy.
- Focus on Technical Skills for CBT-2: Dive deep into field-specific topics, as technical abilities are crucial in CBT-2.
- Mock Tests: Regular mock tests help identify weaknesses and adapt to exam pressure.
- Revision: Keep revising important formulas, theories, and current affairs.
RRB JE (Tech + Non Tech) LIVE Combo
