Bihar BTSC Laboratory Assistant Syllabus

BTSC Lab Assistant Syllabus 2026 covers General Studies (25 marks) and Technical/Subject-specific topics (75 marks) in a 100-question Computer-Based Test, helping candidates prepare for the 1091 Laboratory Assistant posts announced by the Bihar Technical Service Commission (BTSC).

This guide provides the complete BTSC Lab Assistant Syllabus 2026 and Exam Pattern, detailed topic-wise breakdown, selection process, and preparation tips. The recruitment notification for various disciplines (Science, Mechanical Engineering, Civil Engineering, Electrical, Computer Science, etc.) was released in 2026, with online applications open from 6 April 2026 to 6 May 2026.

BTSC Lab Assistant Syllabus 2026 – Overview

The BTSC Lab Assistant exam tests basic science knowledge up to intermediate level and diploma-level technical expertise relevant to laboratory work in the chosen discipline. The Computer-Based Test (CBT) carries 75% weightage in the final selection, while work experience evaluation carries 25%.

Here is a quick overview table:

The syllabus focuses on practical and theoretical knowledge suitable for laboratory assistant roles across Science, Engineering, and related fields.

BTSC Lab Assistant Exam Pattern 2026

The BTSC Lab Assistant Exam Pattern 2026 is straightforward and objective-based. The question paper is bilingual (Hindi & English).

Exam Pattern Table:

Candidates must attempt questions carefully due to negative marking. The technical section carries maximum weightage, so priority should be given to discipline-specific topics.

BTSC Lab Assistant Syllabus 2026 – Detailed Topic Wise

The syllabus is divided into General Studies and Technical subjects. Science-related topics (Physics, Chemistry, Biology) are at intermediate (Class 12) level, while technical topics follow diploma-level curriculum for the applied post.

General Studies Syllabus

This section (25 marks) tests awareness and basic aptitude.

Key topics include:

• Indian History and Culture
• Indian Geography and Bihar-specific Geography
• Indian Polity and Constitution
• Indian Economy and Current Economic Developments
• Current Affairs (National & International)
• Scientific Developments and Inventions
• Environmental Issues and Ecology
• Basic Computer Knowledge

Physics Syllabus

Focus on fundamental concepts up to Class 12 level:

• Units and Measurements
• Motion (Kinematics) and Laws of Motion
• Work, Energy, and Power
• Gravitation and Properties of Matter
• Thermodynamics and Heat
• Oscillations and Waves
• Optics (Reflection, Refraction, and Optical Instruments)
• Electricity and Magnetism
• Modern Physics (Atoms, Nuclei, and Semiconductor Electronics)

Chemistry Syllabus

Covers basic to intermediate level concepts:

• Basic Concepts of Chemistry and Atomic Structure
• Periodic Table and Periodicity in Properties
• Chemical Bonding and Molecular Structure
• States of Matter and Thermodynamics
• Chemical Equilibrium and Redox Reactions
• Organic Chemistry Basics and Hydrocarbons
• Environmental Chemistry

Biology Syllabus

Includes foundational life science topics:

• Cell Structure and Function
• Biomolecules and Biotechnology Basics
• Diversity of Living Organisms
• Plant and Human Physiology
• Reproduction, Genetics, and Evolution
• Ecology and Environment
• Human Health, Diseases, and Nutrition

Technical / Discipline-wise Syllabus

The 75-mark technical section is post-specific and based on diploma-level knowledge in the relevant branch. Common disciplines include:

• Science Laboratory Assistant: Advanced questions from Physics, Chemistry, Biology, and basic laboratory techniques/safety.
• Mechanical Engineering: Engineering Mechanics, Strength of Materials, Fluid Mechanics, Thermodynamics, Manufacturing Processes, Theory of Machines.
• Civil / Rural Engineering: Building Materials, Surveying, Soil Mechanics, Concrete Technology, Environmental Engineering, Estimating & Costing.
• Electrical / Electronics: Basic Electrical Engineering, Circuit Theory, Electrical Machines, Electronics Devices, Digital Electronics, Measurements.
• Computer Science / IT: Programming Basics, Computer Networks, Operating Systems, Database Management, Data Structures.

For exact post-wise detailed syllabus, refer to the official notification or syllabus section on the BTSC website (specific Lab Assistant syllabi may be uploaded soon under the syllabus page).

BTSC Lab Assistant Selection Process 2026

The selection process is multi-stage:

1. Computer-Based Test (75% weightage)
2. Work Experience Evaluation (25% weightage)
3. Document Verification
4. Medical Examination (if required)

Final merit list is prepared based on CBT score + experience marks. Only candidates qualifying the written exam are considered for further stages.

How to Prepare for BTSC Lab Assistant Exam – Tips

• Prioritize the 75-mark technical section -revise diploma-level concepts thoroughly for your discipline.
• Cover intermediate-level Physics, Chemistry, and Biology for the science component.
• Dedicate time to Bihar-specific GK and current affairs for General Studies.
• Practice previous year papers and mock tests to manage time and negative marking.
• Focus on laboratory safety, practical applications, and basic instruments relevant to the post.
• Use standard textbooks for diploma subjects and NCERT books for science topics.