The Bihar Staff Selection Commission (BSSC) will conduct the Laboratory Assistant 2025 Recruitment Exam in two stages – Preliminary and Main Examination. Expectedly, the Prelims exam will be on June 20, 2025. If more than 40,000 applications are received, a Preliminary Exam will be conducted. If needed, this exam will likely happen in multiple shifts. In such a case, normalization of marks will be happen to ensure fairness.
Total vacancies – 143
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Nature of the Preliminary Exam
| Type of Exam | Objective (Multiple Choice Questions) |
| Number of Questions | 150 |
| Total Marks | 600 (Each question carries 4 marks) |
| Negative Marking | 1 mark will be deducted for every wrong answer. |
| Exam Duration | 2 hours |
| Language of Paper | Hindi and English (If there is a mismatch between both languages, the English version will be considered final) |
Candidates who qualify the preliminary exam will be 5 times the number of total vacancies, category-wise, and they will be selected to appear for the Main Exam. A separate notification will be available for the Main Exam.
Syllabus for BSSC Laboratory Assistant 2025 Preliminary Exam
Paper: General Knowledge
This paper will include three sections:
Section (A): General Studies – 35 Questions
This section checks the candidate’s awareness of the environment and current affairs. It includes:
- Current events (national & international)
- Scientific developments
- Awards and honors
- Indian languages, scripts, capitals, and currencies
- Books and authors
- Sports and important players
- Major historical and cultural events
- Bihar and its contribution to India’s freedom movement
Special focus will be on India and its neighboring countries in areas like:
- History and Culture
- Geography and Economy
- Constitution and Political System
- Panchayati Raj, Community Development
- Indian Agriculture and Natural Resources
- Five-Year Plans
Section (B): Science – 75 Questions
This section will include basic science questions based on the Intermediate (10+2) level syllabus. It may include topics from:
- Physics
- Chemistry
- Biology
Section (C): Quantitative Aptitude / Reasoning – 40 Questions
This part tests numerical and reasoning abilities. Questions may be from:
- Basic Arithmetic
- Number series
- Logical reasoning
- Puzzles
- Analytical problems
