Aspirants who appeared for the TNPSC Group 2 Prelims exam on September 28, 2025, can now check the unofficial answer key for questions 101 to 110 from the General Studies paper. This TNPSC Group 2 Answer Key 2025 provides the correct option, detailed step-by-step solutions, and important key notes to help you analyse your performance and estimate your score.
TNPSC Group 2 Answer Key 2025: An Overview
| Aspect | Details |
|---|---|
| Conducting Body | Tamil Nadu Public Service Commission (TNPSC) |
| Exam Name | TNPSC Group 2 & 2A Prelims 2025 |
| Total Vacancies | 645 |
| Exam Date | September 28, 2025 |
| Official Answer Key Release | First week of October 2025 (Expected) |
| Official Website | tnpsc.gov.in |
How to Use the TNPSC Group 2 Answer Key 2025
Using this answer key for questions 101 to 110 can effectively help you calculate an estimated score and analyse your performance in the exam. Follow these simple steps:
- Compare Your Answers: Go through each question one by one and compare the option you marked in the exam with the “Correct Answer” provided in our key.
- Follow the Official Marking Scheme: To calculate your score, you need to know how the TNPSC Group 2 Prelims paper is graded.
- Correct Answer: You are awarded 1.5 marks.
- Incorrect Answer / Unanswered Question: There is no negative marking. You get 0 marks.
- Calculate Your Estimated Score: Use this straightforward formula to find your probable score: Estimated Score=(Total Number of Correct Answers)×1.5 For example, if you answered 120 questions correctly out of 200, your estimated score would be 120×1.5=180.
- Analyse and Learn: Don’t just stop at the score.
- For questions you got wrong, read our “Detailed Solutions & Key Notes” to understand where you made a mistake.
- This analysis helps you identify your weaker subjects and topics, which is crucial for preparing for the Mains exam or future attempts.
Disclaimer: Please remember that this is an unofficial answer key created for your immediate reference. There may be slight variations from the official key that will be released by the TNPSC. Your final score will be based on the official TNPSC answer key only.
TNPSC Group 2 Prelims 2025: General Studies Answer Key (Questions 101-110) Solutions & Key Notes
TNPSC Group 2 Answer Key 2025 Solutions: Below are the detailed step-by-step explanations for Questions 101–110. These FAQs cover reasoning, maths, Tamil grammar, and general studies answers as per the official exam pattern. Candidates preparing for the upcoming TNPSC Group exams can use these solutions for practice and revision
Q.101. Match the following and choose the correct option:
| (a) Chloroform | 1. CCl₃NO₂ |
| (b) Phosgene | 2. ClC₂H₄-S-C₂H₄Cl |
| (c) Tear Gas | 3. CHCl₃ |
| (d) Mustard Gas | 4. COCl₂ |
Options:
| (a) | (b) | (c) | (d) | |
| (A) | 3 | 4 | 2 | 1 |
| (B) | 1 | 4 | 3 | 2 |
| (C) | 3 | 4 | 1 | 2 |
| (D) | 4 | 3 | 1 | 2 |
| (E) | Answer not Known | |||
Correct Answer: (C)
Formula:
- Chloroform – CHCl₃
- Phosgene – COCl₂
- Tear gas – CCl₃NO₂
- Mustard Gas – ClC₂H₄-S-C₂H₄Cl (C₄H₈Cl₂S)
Quick Revision Guide: Toxic Gases & Their Effects
1. Chloroform (CHCl₃)
- Type/use: Colourless volatile organic solvent; historically an inhalational anaesthetic.
- Physical properties: Liquid; sweet, ether-like odour.
- Toxic effects: CNS depressant — dizziness, nausea, unconsciousness; high doses → respiratory & cardiac issues; chronic → liver/kidney damage.
- Toxic Gases & Their EffectsMove to fresh air, maintain breathing, wash skin, monitor vitals.
- Exam tip: Remember its use as an anaesthetic & CNS depressant; liver/kidney toxicity; obsolete.
2. Phosgene (COCl₂)
- Type/use: Industrial gas, pulmonary irritant.
- Physical properties: Colourless gas; musty/hay-like odour.
- Toxic effects: Damages lungs → delayed pulmonary oedema (4–24 hrs); cough, chest tightness.
- First aid: Fresh air, oxygen, monitor delayed symptoms.
- Exam tip: Delayed pulmonary oedema after mild exposure.
3. Phosgene (COCl₂)
- Type/use: Industrial gas, pulmonary irritant.
- Physical properties: Colourless gas; musty/hay-like odour.
- Toxic effects: Damages lungs → delayed pulmonary oedema (4–24 hrs); cough, chest tightness.
- First aid: Fresh air, oxygen, monitor delayed symptoms.
- Exam tip: Delayed pulmonary oedema after mild exposure.
4. Tear Gas (CCl₃NO₂)
- Type/use: Riot control agent (lachrymator).
- Physical properties: Gas or volatile liquid; causes eye/respiratory irritation.
- Toxic effects: Lacrimation, coughing, chest tightness; usually short-lived.
- First aid: Fresh air, wash eyes & skin, remove contaminated clothes.
- Exam tip: Know CS, CN, chloropicrin; main effect = mucous membrane irritation. Its primary function is incapacitation through irritation
5. Mustard Gas (C₄H₈Cl₂S)
- Type/use: Blister agent; Chemical warfare agent (vesicant).
- Physical properties: Colourless to pale yellow oily liquid; persistent.
- Toxic effects: Alkylating agent → delayed skin/eye blisters, respiratory injury; long-term bone marrow & cancer risk.
- Remove contaminated clothes, wash skin, irrigate eyes, supportive care.
- Exam tip: Known as a “blister agent, Vesicant/alkylating → delayed blisters & systemic toxicity.
Q.102. Which of the following statements are true about the Nordics?
Options:
(i) Indo-Aryans are the last immigrants into India.
(ii) This group was the next to come to India after the Negritos.
(iii) This group have come to India between 2000 and 1500 BC.
Answer Choices:
A) (i) only
B) (i) and (iii) only
C) (i) and (ii) only
D) (ii) and (iii) only
E) Answer not known
Correct Answer: B) (i) and (iii) only
Quick Revision Guide: Key Facts About Nordics in India
Who are the Nordics?
- They are a subgroup of the Indo-Aryans, characterized by fair complexion, tall stature, and long heads (dolichocephalic).
Migration to India:
- Indo-Aryans were among the last major migratory groups to enter India.
- They arrived during 2000–1500 BC, post-dating earlier groups like Negritos, Australoids, and Mongoloids.
Clarification of statements:
- (i) True: Indo-Aryans were the last immigrants.
- (ii) False: Nordics (Indo-Aryans) were after the Negritos but not immediately after; there were other groups in between.
- (iii) True: Migration period was approximately 2000–1500 BC.
Exam tip:
- Remember the sequence of migration: Negritos → Australoids → Mongoloids → Indo-Aryans (Nordics).
- For UPSC/State PCS, the Nordics = Indo-Aryans = last major migration.
- Chronological Order
- Austric: The Austric people are believed to be among the earliest inhabitants of Assam, migrating around 2000-1000 BCE.
- Mangaloid: The Mangaloid people, associated with the Mongoloid race, migrated to Assam around the 1st millennium CE, particularly during the early medieval period.
- Aryan: The Aryans migrated to Assam later, around 600-500 BCE, as part of the broader Indo-Aryan migration into the Indian subcontinent.
- Ahom: The Ahom people migrated to Assam in the 13th century CE (specifically around 1228 CE) from present-day Yunnan, China.
Q.103. Which of the statement(s) is/are correct?
Options:
(i) Satakarni was the First Satavahana King and not the most powerful Satavahana ruler.
(ii) His achievements are not described in the Managhat inscription.
(iii) His name was inscribed on one of the gateways of Sanchi Stupa and referred to as “Lord of Dakshinpatha.”
Answer Choices:
A) (iii) only
B) (ii) and (iii)only
C) (i) only
D) (i) and (ii) only
E) Answer not known
Correct Answer: A) (iii) only
Quick Revision Guide: Key Facts About Satakarni (Satavahana Dynasty)
- Founder vs. Early Ruler
- Simuka — founder of the Satavahana dynasty (not Satakarni).
- Satakarni I — third king, but the first Satavahana ruler to expand his empire through military conquests.
- Therefore, statement (i) is incorrect.
- Naneghat inscription
- Achievements of Satakarni I and his queen Naganika are described in the Naneghat inscription.
- The option mentions “Managhat,” which is likely a misprint of Naneghat.
- So, the claim that his achievements are not described is false.
- Statement (ii) is incorrect.
- Sanchi Stupa reference
- His name appears on the Sanchi Stupa gateway, where he is referred to as “Lord of Dakshinpatha” (Lord of the Deccan).
- Statement (iii) is correct.
Exam Tip:
- Founder = Simuka, Expander = Satakarni I, Greatest = Gautamiputra Satakarni.
- Remember Sanchi inscription → Satakarni as “Lord of Dakshinpatha.”
Q.104. Which among the following statement(s) is/are true about Indian National Congress?
Options:
(i) The Father of Indian National Congress is A.O. Hume.
(ii) The first President of Indian National Congress was S.N. Banerjee.
(iii) S.N. Banerjee founded Indian National Liberation Federation.
Answer Choices:
A) (i) only
B) (i) and (iii) only
C) (i) and (ii) only
D) (ii) and (iii) only
E) Answer not known
Correct Answer: B) (i) and (iii) only
Quick Revision Guide: Indian National Congress (INC)
- A.O. Hume
- Known as the Father of Indian National Congress.
- A retired British civil servant, he played a key role in bringing together Indian leaders in 1885.
- Statement (i) is correct.
- First President
- The first President of the INC was Womesh Chandra Bonnerjee in 1885 (not S.N. Banerjee).
- Statement (ii) is incorrect.
- S.N. Banerjee
- He later founded the Indian National Liberal Federation (INLF) in 1919 after the split in Congress.
- Statement (iii) is correct.
Exam Tip (Indian National Congress & Leaders):
- A.O. Hume → Father of the Indian National Congress (1885).
- First President of INC → W.C. Bonnerjee (1885, Bombay session).
- Surendranath Banerjee (S.N. Banerjee) →
- 1876 → Co-founded the Indian National Association (INA) with Anandamohan Bose (originally called Bharat Sabha).
- 1879 → Purchased and edited The Bengalee newspaper (founded in 1862 by Girish Chandra Ghosh) for the next 40 years.
- Worked to unite Hindus and Muslims for political action.
- Became INC President twice → 1895 (Poona) & 1902 (Ahmedabad).
- 1919 → Founded the Indian National Liberal Federation (INLF) after the split in Congress.
- Prominent INLF leaders: Tej Bahadur Sapru, V. S. Srinivasa Sastri, M. R. Jayakar
Quick Recall:
- Hume = Father of INC
- Bonnerjee = First INC President (1885)
- INA = Founded 1876 by Banerjee & Anandamohan Bose (Bharat Sabha)
- Banerjee = Edited The Bengalee (1879–40 years), INC President (1895, 1902), INLF founder (1919)
Q.105. Incorporation of Fundamental Duties to the Constitution of India was done by __________
Answer Choices:
(A) 42nd Constitutional Amendment Act, 1976
(B) 43rd Constitutional Amendment Act, 1977
(C) 44th Constitutional Amendment Act, 1978
(D) 45th Constitutional Amendment Act, 1980
(E) Answer not known
Correct Answer: (A) 42nd Constitutional Amendment Act, 1976
Quick Revision Guide: Fundamental Duties
- Added by: 42nd Constitutional Amendment Act, 1976 (during Indira Gandhi’s government, based on the recommendations of the Swaran Singh Committee).
- Part of Constitution: Inserted in Part IVA (Article 51A).
- Original count: 10 Fundamental Duties.
- Later addition: The 86th Amendment Act, 2002 added the 11th duty — “to provide opportunities for education to children between 6–14 years.”
- Nature: These are non-justiciable duties (not enforceable by courts), but they act as a moral obligation for citizens.
Exam Tip:
- 42nd Amendment = Mini-Constitution (added Fundamental Duties, changed Preamble, extended Parliament’s power).
- Swaran Singh Committee = recommended Fundamental Duties.
- 86th Amendment = 11th duty (education for 6–14 years).
Q.106. Which of the following are true about Tamil Nadu Panchayats Act, 1994?
Options:
(i) Chapter II of this Act deals with Gram Sabha.
(ii) Chapter VII deals with Taxation and Finance.
(iii) Chapter XII deals with Penalties.
Answer Choices:
(A) (i) only
(B) (i) and (iii) only
(C) (i) and (ii) only
(D) (ii) and (iii) only
(E) Answer not known
Correct Answer: (B) (i) and (iii) only
Explanation:
- Chapter II → Grama Sabha ✔️
- Chapter VII → Deals with Establishment, Powers and Functions of Panchayats, not Taxation and Finance ❌
- Chapter XII → Penalties ✔️
So, statements (i) and (iii) are correct, while (ii) is incorrect.
Panchayat Raj : Tamil Nadu Panchayats Act, 1994 [Tamil Nadu Act 21 of 1994]
The Tamil Nadu Panchayats Act, 1994, is a comprehensive state legislation enacted in pursuance of the 73rd Constitutional Amendment Act of 1992 (Part IX of the Constitution of India), which provided constitutional status to Panchayati Raj Institutions (PRIs).
- Chapter I – Preliminary
- Chapter II – Grama Sabha
- Chapter III – Formation and Constitution of Village Panchayats, Panchayat Union Councils and District Panchayats
- Chapter IV – Offences relating to Elections
- Chapter V – Powers and Duties of the Executive Authority
- Chapter VI – Procedure
- Chapter VII – Establishment, Powers and Functions of Panchayats
- Chapter VIII – Functions, Powers and Property of Village Panchayats, Panchayat Union Councils and District Panchayats
- Chapter IX – Taxation and Finance
- Chapter IX-A – Tax on Profession, Trade, Calling and Employment
- Chapter X – Controlling Authorities
- Chapter XI – General and Miscellaneous Licences and Permissions
- Chapter XII – Penalties
- Chapter XIII – Miscellaneous
Q.107. Find the wrongly matched pair:
Options:
(i) National Human Rights Commission — 1993
(ii) Central Information Commission — 2005
(iii) Central Vigilance Commission — 1963
(iv) Central Bureau of Investigation — 1969
Answer Choices:
A) (ii) and (iii) only
B) (i) and (ii) only
C) (iii) and (iv) only
D) (ii) and (iv) only
E) Answer not known
Correct Answer: C) (iii) and (iv) only
Explanation:
| Institution | Correct Year | Notes |
|---|---|---|
| National Human Rights Commission (NHRC) | 1993 | Established on October 12, 1993 through the Protection of Human Rights Act, 1993. ✅ Correctly matched |
| Central Information Commission (CIC) | 2005 | Formed under the Right to Information Act, 2005 to handle appeals/complaints regarding information requests. ✅ Correctly matched |
| Central Vigilance Commission (CVC) | 1964 | Apex anti-corruption body; established following the Santhanam Committee (1962–64) recommendations. ❌ Wrongly matched with 1963 |
| Central Bureau of Investigation (CBI) | 1963 | Established on 1 April 1963 via Government of India Resolution. ❌ Wrongly matched with 1969 |
- Wrongly matched pairs: CVC — 1963 and. CBI — 1969
Exam Tip:
- NHRC → 1993 (Human Rights)
- CIC → 2005 (RTI, Information Commission)
- CVC → 1964 (anti-corruption, Santhanam Committee)
- CBI → 1963 (main investigative agency)
Q.108. Tamil Nadu Government celebrated April 29 to May 5 to mark birth anniversary of:
Options:
(A) Pavendar Bharathidasan
(B) Perunthalaivar Kamarajar
(C) Pasumpon Muthu Ramalingam
(D) Peraringar Anna
(E) Answer not known
Correct Answer: (A) Pavendar Bharathidasan
Quick Revision Guide:
Pavendar Bharathidasan (1891–1964) – Key Facts
- Birth Name: Kanakasubburathinam
- Popular Titles:
- Pavendar – “King of Poetry”
- Puratchi Kavingyar – “Revolutionary Poet”
- Contributions:
- Prominent Tamil poet and writer
- Advocate of social reform, rationalism, and Tamil language
- Key figure in the Dravidian movement
- State Song Connection:
- Wrote the invocation song “Tamil Thai Valthu (Puducherry)”, which was later adopted as the official state song of Puducherry
- Significance:
- Celebrated annually by the Tamil Nadu Government from April 29 – May 5 to honor his legacy.
- Other Options Clarified:
- Kamarajar: Birth anniversary on July 15
- Pasumpon Muthu Ramalingam: Observed on October 30
- Peraringar Anna (C.N. Annadurai): Born September 15
Exam Tip:
- Bharathidasan → Tamil literature, Dravidian movement, social reform
- Tamil Thai Valthu → Puducherry official state song
Q.109. Which is/are the key feature/s of the Women’s Reservation Bill passed by Lok Sabha on 20th Sept. 2023?
Options:
(i) The Bill reserves 33% of seats for women in Lok Sabha and State Assemblies.
(ii) It will not apply to the seats reserved for SC/ST in Lok Sabha and State Legislatures.
(iii) Reservation to be provided for 25 years.
(iv) To be effective after delimitation exercise.
Answer Choices:
A) (i) and (ii) only
B) (i) and (iv) only
C) (ii) and (iii) only
D) (i) and (iii) only
E) Answer not known
Correct Answer: B) (i) and (iv) only
Explanation:
The key features of the Women’s Reservation Bill (The Constitution (One Hundred and Sixth Amendment) Act, 2023), passed by the Lok Sabha on September 20, 2023, include:
- Reservation Percentage:
- The Bill reserves 33% of seats for women in Lok Sabha and State Legislative Assemblies. ✅
- Application to SC/ST Seats:
- The reservation applies to all seats, including those reserved for SC/ST. ❌
- Statement (ii) is incorrect.
- Duration of Reservation:
- No fixed time limit of 25 years is specified in the Bill. ❌
- Statement (iii) is incorrect.
- Effective Date:
- The Bill will become effective only after the next delimitation exercise, when constituency boundaries are redrawn. ✅
- Statement (iv) is correct.
Exam Tip:
- Remember: 33% seats, effective post-delimitation, applies across general & reserved constituencies.
- Often confused: SC/ST reservations remain intact, women’s quota overlays on all constituencies.
Q.110. Choose the right matches:
Options:
NHS — National Health Service
CBHI — Central Bureau of Health Insurance
PHC — Primary Health Centre
NRHM — National Rural Health Mission
Answer Choices:
A) (1) and (3) are correct
B) (1) and (2) are correct
C) (2) and (3) are correct
D) (3) and (4) are correct
E) Answer not known
Correct Answer: D) (3) and (4) are correct
Explanation:
- NHS — National Health Service ❌
- This is incorrect.
- National Health Stack (NHS) is a visionary digital public infrastructure framework, proposed by NITI Aayog, to digitise India’s healthcare sector.
- CBHI — Central Bureau of Health Insurance ❌
- This is incorrect.
- The correct full form is Central Bureau of Health Intelligence (CBHI), which is India’s national nodal agency for Health Intelligence under the Directorate General of Health Services (DGHS), Ministry of Health and Family Welfare.
- PHC — Primary Health Centre ✅
- First point of contact between the rural population and the medical officer.
- Provides basic healthcare services, maternal & child health, vaccinations, and disease control.
- NRHM — National Rural Health Mission ✅
- National Rural Health Mission, It is a flagship program launched by the Government of India in April 2005 to address the health needs of the underserved rural population.
- Now merged into National Health Mission (NHM).
- Provides accessible, affordable, and quality healthcare to the rural population, especially vulnerable groups.
Exam Tip:
- NHS → In India, think National Health Stack (digital health infra, NITI Aayog), not UK’s Health Service.
- CBHI → Central Bureau of Health Intelligence (health data + stats agency under MoHFW).
- PHC → Backbone of rural healthcare (first contact, basic services, MCH, vaccination).
- NRHM → Launched 2005, now part of NHM; focus on rural healthcare access for vulnerable groups.
What’s Next After Checking the TNPSC Group 2 Answer Key 2025?
After estimating your score with the unofficial answer key, follow these crucial steps in the TNPSC Group 2 selection process:
- Wait for the Official Answer Key: TNPSC will release it a few days after the exam. Re-check your responses carefully.
- Challenge Window: Raise objections (if needed) with valid proof during the official challenge period.
- Prelims Result & Cut-Off: Based on the final key, TNPSC will announce results and category-wise cut-off marks.
- Start Mains Preparation Early: Don’t wait for results if your score is above the expected cut-off. Focus on:
- Paper I: Tamil Eligibility Test (descriptive)
- Paper II: General Studies (descriptive – polity, science & tech, Tamil society)
- Stay Updated: Track announcements, hall tickets, and exam dates on the official TNPSC website.
👉 By preparing ahead, you’ll gain an edge in the competition and move one step closer to success in the TNPSC Group 2 Mains exam.
We hope this detailed analysis of questions 101-110 from the TNPSC Group 2 General Studies paper helps you in your score estimation. Remember to use this as a reference and wait for the official key from TNPSC for the final confirmation.
What’s Next?
- Wait for the Official Answer Key: TNPSC will release the official answer key soon. Use it for final verification.
- Prepare to Raise Objections: If you find discrepancies in the official key, be ready to use the challenge window with valid proof.
- Start Mains Preparation Early: If your score looks promising, don’t wait for the official results. Begin your preparation for the Mains descriptive papers immediately.
- Stay Updated: Keep tracking the official TNPSC website for announcements on results, cut-offs, and Mains exam dates.
We hope this detailed analysis helps you! Leave a comment below with your estimated score!