70th BPSC Prelims Re-exam 2025 Question Paper
Explore the complete solved question paper for 70th BPSC Prelims Re-exam 2025 featuring 150 solved questions with bilingual (English & Hindi) explanations, official answer key, and subject weightage breakdown.
All India Trade Union Congress was formed in the year
Detailed Explanation:
All India Trade Union Congress (AITUC) was founded in 1920 in Bombay (Mumbai).
Lala Lajpat Rai served as its first president, and it was the first national trade union centre in India formed during the British colonial period to organize workers' rights and welfare.
Average height of snow-line in Uttar Pradesh is
Detailed Explanation:
The snow-line is the altitude above which snow remains throughout the year.
In the Himalayan region of Uttar Pradesh (now largely Uttarakhand), the average snow-line is around 4500–5000 meters, with 4500 m being the typical reference value due to higher precipitation and latitude effects.
The Vernacular Press Act allowed
Detailed Explanation:
The Vernacular Press Act, 1878 was enacted by Viceroy Lord Lytton to suppress criticism in Indian-language newspapers.
✅ Statement 1 – Correct: The Act allowed confiscation of newspaper assets if objectionable content was published.
❌ Statement 2 – Incorrect: Confiscation occurred when content was objectionable, not when it was "not objectionable".
✅ Statement 3 – Correct: The Act allowed confiscation of printing presses for publishing objectionable material.
Both Statements 1 and 3 are correct, making Option 4 (More than one of the above) the right answer.
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If C is brother of B, B is son of A, DD is father of C and A is female, then A is
Detailed Explanation:
B is the son of A, and A is female, so A is B's mother.
C is the brother of B, meaning C and B share the same parents; thus A is also C's mother.
D is the father of C, and since C and B have the same parents, D is the father of both C and B.
Therefore, A (mother) and D (father) are married, making A the wife of D.
There are 15 chairs in a row. Position of P is at the middle, and Q is at 12th position counting from the right. How many chairs are there between p and Q ?
Detailed Explanation:
P's position: Middle of 15 chairs = 8th position from left (using formula (15+1)/2 = 8).
Q's position: 12th from right = 4th position from left (using formula 15 - 12 + 1 = 4).
Chairs between P and Q: Positions 5, 6, and 7 lie between position 4 (Q) and position 8 (P), giving 3 chairs.
Which of the following is not the famous centre for Buddhist Learning in Ancient India?
Detailed Explanation:
Nalanda (Bihar) was established during the Gupta period (5th century CE) and became the largest ancient Buddhist university.
Vikramshila (Bihar) was founded by Pala king Dharmapala (8th century CE) and specialized in Tantric Buddhism.
Valabhi (Gujarat) flourished under the Maitraka dynasty (6th-7th century CE) and was a major center for Hinayana Buddhism.
Nagpur has no ancient Buddhist educational history; it gained prominence only after Dr. B.R. Ambedkar's conversion at Deekshabhoomi in 1956.
Compared to a burn due to air at 100°C, the burn due to steam at 100°C is
Detailed Explanation:
Steam at 100°C contains latent heat of vaporization (540 cal/g) in addition to thermal energy, while air at 100°C has only thermal energy.
When steam condenses on skin, it releases this extra latent heat, transferring significantly more total energy than hot air, causing deeper and more severe burns.
Which Indian State has the highest literacy rate as per the 2023 census?
Detailed Explanation:
Census 2011 remains the last official census conducted in India; no 2023 census has been held.
As per Census 2011, Kerala recorded the highest literacy rate at 93.91%, followed by Mizoram (91.58%) and Goa (87.40%).
The question contains factual errors regarding both the census year and the correct answer—Kerala (Option 4) holds the highest literacy rate, not Himachal Pradesh.
As the diameter of objective lens of a telescope increases, the resolution of telescope
Detailed Explanation:
Resolution of a telescope is its ability to distinguish between two closely spaced objects and is inversely proportional to the angular resolution θ.
According to Rayleigh's criterion, θ = 1.22λ/D, where λ is the wavelength of light and D is the diameter of the objective lens. As D increases, θ decreases, meaning the telescope can resolve finer details — hence resolution increases.
A larger aperture also collects more light, further improving image clarity and the ability to separate closely spaced objects.
How is Hydrogen stored physically?
Detailed Explanation:
Physical storage of hydrogen means storing H₂ gas without any chemical transformation.
Compressing hydrogen gas into high-pressure tanks (350–700 bar) is the most common physical storage method – no chemical bonds are formed or broken.
Hydrides involve chemical bonding with metals/alloys (chemical storage), and water (H₂O) is a compound, not free hydrogen gas.
When was the Patna College established?
Detailed Explanation:
Patna College was established in 1863, making it one of the oldest institutions of higher education in Bihar.
It was initially affiliated with the University of Calcutta and later became part of Patna University after its establishment in 1917.
Turmeric powder is obtained from which part of turmeric plant?
Detailed Explanation:
Turmeric powder is obtained from the dried rhizome (underground stem) of the turmeric plant, not from root, foot, or seed.
A rhizome is botanically a modified stem that grows horizontally underground; it is distinct from true roots which absorb water and nutrients.
Options 1 ("Dried foot" - not a plant part), 2 ("Dried root" - incorrect organ), and 3 ("Seed" - turmeric rarely produces viable seeds) are all incorrect, making Option 4 ("None of the above") the correct answer.
Which Sector in India has benefitted the most from Globalization ?
Detailed Explanation:
Services sector emerged as the largest beneficiary of globalization in India, contributing over 50% to GDP.
IT exports surged with companies like TCS, Infosys, Wipro becoming global leaders; India became the world's top BPO destination due to English-speaking talent and cost advantages; FDI inflows concentrated in telecom, banking, insurance, and e-commerce; sectors like tourism, healthcare, and financial services expanded rapidly post-1991 reforms.
In contrast, manufacturing grew modestly while agriculture faced challenges from import competition and saw limited export growth despite globalization.
Quinine is a common drug for malaria that is obtained from a plant. Which part of the plant yields this drug?
Detailed Explanation:
Quinine is an alkaloid drug used to treat malaria, extracted from the stem bark of the Cinchona tree.
The bark tissues contain the highest concentration of quinine and related alkaloids, which are harvested, dried, and processed for medicinal use; leaves and roots contain negligible amounts.
In India which of the following city has been declared as the first "City of Literature" by UNESCO ?
Detailed Explanation:
UNESCO's Creative Cities Network recognizes cities integrating creativity into sustainable urban development across seven categories including Literature.
Kozhikode (Kerala) was designated as India's first UNESCO City of Literature in October 2023, acknowledged for its rich literary heritage, over 70 publishing houses releasing 400-500 books annually, and 545 libraries serving an active reading community.
What should come in place of ? in the following series?
117, 98, 80, 64, ?, 42
Detailed Explanation:
Pattern: The series decreases with differences that increase by +1 each time.
Differences: 117 → 98 is −19, 98 → 80 is −18, 80 → 64 is −16.
Next difference: Pattern shows increments of +1, +2, +3, so next is −16 + 3 = −13.
Missing term: 64 − 13 = 51.
Verification: 51 → 42 is −9 (increase of +4 from −13), confirming the pattern.
Average height of Kosi Plain from mean sea level is
Detailed Explanation:
The Kosi Plain is a low-lying alluvial region in the Indo-Gangetic Plain formed by extensive sediment deposition from the Kosi River.
Its average elevation is approximately 30 metres above mean sea level, reflecting the flat topography characteristic of floodplains in the northern Bihar region.
Grey revolution is related to
Detailed Explanation:
The Grey Revolution refers to the massive increase in the production and use of chemical fertilizers in Indian agriculture during the 1960s-70s.
It complemented the Green Revolution by improving soil fertility through fertilizers like urea and superphosphate, leading to higher crop yields and food self-sufficiency.
Which State of India is called as the State of Minerals?
Detailed Explanation:
Odisha (formerly Orissa) is called the "State of Minerals" due to possessing the largest variety and quantity of mineral deposits in India.
It is the top producer of iron ore, chromite, and bauxite, and holds 98% of India's chromite reserves. Key mining districts include Keonjhar, Sundargarh, and Mayurbhanj, which supply critical raw materials for steel and aluminium industries nationally.
There is no atmosphere on the surface of the moon because
Detailed Explanation:
The Moon lacks an atmosphere because its escape velocity (2.38 km/s) is lower than the root mean square (rms) velocity of gas molecules like hydrogen and helium (1–1.5 km/s).
When the rms velocity exceeds escape velocity, gas molecules possess enough kinetic energy to overcome the Moon's weak gravitational pull and escape into space. In contrast, Earth's escape velocity (11.2 km/s) is sufficiently high to retain atmospheric gases.
70th BPSC Prelims Re-exam 2025 Questions Paper - Subject-wise Question Distribution
General Science
28 Qs (18.7%)Modern History
24 Qs (16%)Current Affairs
20 Qs (13.3%)Indian Polity
16 Qs (10.7%)Bihar Special
13 Qs (8.7%)Indian Geography
12 Qs (8%)Indian Economy
10 Qs (6.7%)World Geography
8 Qs (5.3%)General Mental Ability
8 Qs (5.3%)Ancient History
5 Qs (3.3%)Medieval History
4 Qs (2.7%)Environment & Ecology
1 Qs (0.7%)Indian Art & Culture
1 Qs (0.7%)70th BPSC Prelims Re-exam 2025 Question Paper - FAQs & Analysis
Q1 How many total questions were asked in 70th BPSC Prelims Re-exam 2025 2024?
Q2 What is the subject-wise question breakdown for 70th BPSC Prelims Re-exam 2025 2024?
- General Science: 28 questions (18.7%)
- Modern History: 24 questions (16%)
- Current Affairs: 20 questions (13.3%)
- Indian Polity: 16 questions (10.7%)
- Bihar Special: 13 questions (8.7%)
- Indian Geography: 12 questions (8%)
- Indian Economy: 10 questions (6.7%)
- World Geography: 8 questions (5.3%)
- General Mental Ability: 8 questions (5.3%)
- Ancient History: 5 questions (3.3%)
- Medieval History: 4 questions (2.7%)
- Environment & Ecology: 1 questions (0.7%)
- Indian Art & Culture: 1 questions (0.7%)