Bihar Vidhan Parishad DEO Exam Details 2026

The DEO selection process includes a Computer-Based Test (CBT) followed by a Typing/Skill Test. The written exam checks conceptual clarity, reasoning skill, and basic computer knowledge. Candidates must understand the pattern to prepare in the right direction.

| Section | No. of Questions | Marks | Duration | Negative Marking |

| --- | --- | --- | --- | --- |

| General Studies | 20 | 20 | 2 Hours (Combined) | |

| -1 mark for every wrong answer | General Science | 20 | 20 | |

| Mathematics | 20 | 20 | Mental Ability / Reasoning | 20 |

| 20 | Computer Knowledge | 20 | 20 | |

| Hindi Grammar | 20 | 20 | Total | 120 |

| 120 | 120 Minutes | Yes (-1) | | |

Key Details:

• The exam carries 120 objective questions.
• Each question carries 1 mark.
• Negative marking: -1 mark for every incorrect answer.
• The exam takes place in online mode (CBT).
• No sectional timing.

The CBT syllabus covers six subjects. Candidates must study each subject with a clear understanding of concepts and application-based questions. The outline below helps candidates know the complete list of topics for the DEO exam.

Mathematics tests numerical ability, calculation skills, and basic arithmetic knowledge.

| Topic | Sub-topics |

| --- | --- |

| Number System | |

| HCF, LCM, prime numbers, divisibility | |

| Arithmetic | |

| Percentage, ratio & proportion, profit & loss, time & work | |

| Average | |

| Weighted average, basic problems | |

| Simple & Compound Interest | |

| Formula-based questions | |

| Mensuration | |

| Area, volume, perimeter | |

| Algebra | |

| Linear equations, identities | |

| Data Interpretation | |

| Graphs, tables | |

Hindi Grammar forms an essential part of the DEO exam. Candidates must prepare core grammar rules.

| Topic | Sub-topics |

| --- | --- |

| व्याकरण | |

| संधि, समास, उपसर्ग, प्रत्यय | |

| शब्द भेद | |

| संज्ञा, सर्वनाम, विशेषण, क्रिया | |

| वाक्य शुद्धि | |

शुद्ध वाक्य, सुधार | |

| मुहावरे और लोकोक्तियाँ | |

र्थ और प्रयोग | |

| पर्यायवाची / विलोम | |

| सामान्य शब्दावली | |

| गद्यांश | |

| पाठ आधारित प्रश्न | |

General Studies tests the candidate’s understanding of basic facts related to India, Bihar, and general knowledge.

| Topic | Sub-topics |

| --- | --- |

| Indian History | |

| Ancient, medieval, modern | |

| Geography | |

| Physical, social, and economic geography of India | |

| Polity | |

| Constitution, Parliament, state structure | |

| Economy | |

| Basic economic concepts | |

| Bihar GK | |

| Culture, geography, economy, famous personalities | |

| Current Affairs | |

| National and state-level news | |

General Science checks awareness of basic science concepts taught till Class 10 level.

| Subject | Topics |

| --- | --- |

| Physics | |

| Motion, force, energy, sound, light | |

| Chemistry | |

| Chemical reactions, basic chemistry, elements | |

| Biology | |

| Human body, plant life, diseases, nutrition | |

| Everyday Science | |

| Day-to-day scientific applications | |

Reasoning tests analytical ability, pattern identification, and logical thinking.

| Topic | Sub-topics |

| --- | --- |

| Analogy | |

| Word analogy, number analogy | |

| Classification | |

| Odd-one-out | |

| Series | |

| Number series, alphabet series | |

| Coding-Decoding | |

| Word-based codes | |

| Directions | |

| Direction-based questions | |

| Blood Relation | |

| Family tree | |

| Non-Verbal Reasoning | |

| Patterns, figures | |

Computer Knowledge forms the core of the DEO role. Candidates must understand basic computer operations.

| Topic | Sub-topics |

| --- | --- |

| Computer Basics | |

| Hardware, software, input-output devices | |

| MS Office | |

| Word, Excel, PowerPoint | |

| Internet | |

| Browsing, email, search engines | |

| Operating System | |

| Windows basics | |

| Networking | |

| LAN, WAN, basic terms | |

| Typing Basics | |

| Keyboard shortcuts, typing rules | |