The 66th BPSC Combined (Preliminary) Competitive Examination was conducted by the Bihar Public Service Commission (BPSC) on 27 December 2020 for the General Studies Paper (Booklet Series/SET-A).
This post provides the complete 150-question bilingual (English & हिन्दी) official paper, an interactive Online CBT Mock Test Engine with a live 2-hour countdown timer, zero negative marking evaluation (as per the official 66th BPSC pattern), detailed explanations, and a high-resolution printable PDF question booklet with the answer key matrix.
66th BPSC Combined Competitive Prelims Examination
Official Exam Pattern • Bilingual CBT Simulation
Instructions & Marking Scheme:
- The test contains 150 multiple-choice questions of General Studies.
- Each question has 5 options out of which only one is correct.
- Each correct answer will be awarded +1.00 marks.
- There is no negative marking for incorrect responses in this examination.
- You can switch the question language anytime between English and हिन्दी.
Questions appear in your chosen language. You can also toggle language per question during practice.
Choose How You Want To Attempt:
Real Exam Simulation
- ⏱️ 120 Mins Live Countdown Timer
- ✨ Zero Negative Marking calculation
- 📊 Full Scorecard & Explanations after submission
Self-Paced Learning
- ☕ No Timer / No Stress Practice
- ✅ Instant Green/Red Answer Feedback on Click
- 📖 Detailed Official Explanation with Every Question
66th BPSC Prelims 2020: Exam Overview
| Exam Attribute | Details |
|---|---|
| Exam Conducting Body | Bihar Public Service Commission (BPSC) |
| Exam Name | 66th Combined (Preliminary) Competitive Examination |
| Subject / Paper | General Studies (Paper – 1) • Series A |
| Exam Date | 27 December 2020 |
| Total Questions | 150 Questions (Objective Type MCQ with 5 Options) |
| Total Maximum Marks | 150 Marks |
| Exam Duration | 120 Minutes (2 Hours) |
| Marking Scheme | +1.00 Mark for Correct Answer |
| Negative Marking | 0.00 Marks (No Negative Marking in 66th BPSC) |
| Language Medium | Bilingual (English & हिन्दी) |
66th BPSC Prelims (GS Paper 1): Subject-wise Question Distribution
| Subject / Section | Number of Questions | Key Topics & Themes Covered |
|---|---|---|
| General Science (Physics, Chemistry, Biology) | 30 | Sunlight wavelengths & vitamin D synthesis, pressure formula & units, work and scalar/vector mechanics, sound propagation in vacuum, boiling point & pressure relation, neutron discovery (Chadwick), laughing gas (N₂O), cement composition (gypsum), hydrocarbon fuels, acidity and pH scale change (10⁻³ to 10⁻⁶), radioactive decay & isotopes, diamond structure, car battery acid (H₂SO₄), soda water preparation, enzyme catalysts, human bone count (206), endocrine glands & insulin secretion, plant vascular tissues (xylem/phloem), chloroplasts & photosynthesis. |
| Current Affairs (National & International) | 30 | Rafale fighter jets induction (Ambala airbase), PM SVANidhi street vendors scheme, Fit India Freedom Run, National Education Policy (NEP) 2020 Kasturirangan Committee, DRDO missile tests, Ayushman Bharat health mission, Nobel Prizes 2020, US Presidential Election 2020, G20 Summit 2020, Abraham Accords (Israel-UAE), QUAD naval exercises, Mission Shakti, Operation Sanjeevani, Atmanirbhar Bharat Abhiyan economic packages. |
| History of India & National Movement | 35 | Indus Valley Civilisation (Lothal, Kalibangan, Harappa), Vedic literature & Upanishads, Ashokan edicts, Mahavira & Jain councils, Gupta golden age, Delhi Sultanate administration, Alauddin Khalji market reforms, Sher Shah Suri administrative divisions, Mughal revenue system (Zabt/Dahsala), 1857 Revolt leaders (Nana Saheb, Hazrat Mahal, Ahmadullah), Indian National Congress formation (1885), Partition of Bengal (1905 Swadeshi Movement), Dandi Salt March (24 days duration), Government of India Act 1935, INA trials (Bhulabhai Desai), Madam Bhikaiji Cama (Stuttgart 1907 flag hoisting), Chittaranjan Das (Deshbandhu), Poorna Swaraj Day (26 Jan 1930). |
| Bihar Special (History, Culture & Administration) | 25 | Bihar Diwas origin (22 March 1912 separation from Bengal), Tinkathia system in Champaran (3/20 area for indigo), first Chief Minister of Bihar (Dr. Shri Krishna Singh), first INC session in Bihar (Bankipore, Patna 1912), Jayaprakash Narayan (Lok Nayak), Champaran Satyagraha 1917, Bihar Provincial Kisan Sabha (Swami Sahajanand Saraswati), revolutionary movements in Bihar, Mahabodhi Temple UNESCO site, Nalanda & Vikramshila universities. |
| Geography (World & India) | 10 | Continental drift theory, major mountain passes of the Himalayas, ocean currents (Gulf Stream, Kuroshio), atmospheric layers & tropopause, distribution of minerals in India, major river basins & multipurpose dam projects, coral reef bleaching, national parks & wildlife sanctuaries, tropical cyclones. |
| Indian Polity & Governance | 10 | Preamble principles, Fundamental Rights & Writs (Article 32), Directive Principles of State Policy (DPSP), Panchayati Raj (73rd Constitutional Amendment), Election Commission of India, Comptroller and Auditor General (CAG), Attorney General of India, emergency provisions (Article 352/356), Public Interest Litigation (PIL), Parliament committee system. |
| Indian Economy & Development | 10 | Inclusive growth indicators, banking system and Top 100 global banks (SBI), NIRVIK export credit insurance scheme, Comprehensive Financial Management System (CFMS Bihar 2019), Krishi Karman Award to Bihar (Maize and Wheat), Satat Jivikoparjan Yojana (SJY 2018), Saat Nishchay-1 programs, Bihar per capita NSDP comparison (33% of national average). |
| Quantitative Aptitude & Mathematics | 10 | Missing number cube/square sequences (n³ − n² = 180), combination formula permutation (²ⁿC₃ : ⁿC₂ = 44 : 3, so n = 6), averages of algebraic terms, Venn diagram athletic teams (10 only football), time and work (Mohan & Sohan remaining days = 11), clock hour hand angle (155°), non-square identification (143642 ends in 2), linear equation systems (x = 3, y = 2), algebraic identity ((a+b)² − (a−b)²) / ab = 4, compound population growth formula (194,481). |
| Total | 150 | 150 Marks |
Frequently Asked Questions (FAQs)
Q1. What was the marking scheme in 66th BPSC Prelims?
In 66th BPSC Prelims, there were 150 questions carrying 150 marks (+1 mark per correct answer). There was no negative marking (0.00 deduction for wrong answers). Negative marking was introduced later in the 68th BPSC examination.
Q2. How many options were given in each question in 66th BPSC?
Each question had 5 options (A, B, C, D, and E), with option (E) specifically formulated as “None of the above / More than one of the above” (उपर्युक्त में से कोई नहीं / उपर्युक्त में से एक से अधिक).
Q3. Was there any cancelled or deleted question in 66th BPSC Series A?
Check the final answer key published by BPSC for any deleted or revised questions before relying on a score.
Q4. Where can I practice this paper with a live exam timer and negative marking controls?
You can take the complete online Computer Based Test (CBT) mock exam directly using the interactive test player above with instantaneous performance analytics, question breakdown, and answer key explanations.
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