TNPSC Group 1 2025

1. Which of statements are True?
(i) Octane number increases with chain length.
(ii) Cycloalkanes have higher Octane number than straight chain alkanes.
(iii) Alkenes and aromatic hydrocarbon have higher Octane number than straight chain alkanes.
(iv) Branched chain alkanes have lower octane number than straight chain alkanes.

• A. (i) and (iv)
• B. (i) and (ii)
• C. (ii) and (iii)
• D. (i), (ii), (iii) and (iv)

2. Match the following hormone with the disorder caused:
(a) Insulin 1. Cushing's syndrome
(b) Thyroxine 2. Diabetes insipidus
(c) Glucocorticoids 3. Acromegaly
(d) Growth hormone 4. Goitre
5. Diabetes Mellitus

• A. 5 1 2 3
• B. 2 4 3 1
• C. 5 4 1 3
• D. 2 4 1 3

3. Choose the right matches :
(1) Carotenoid — C₅₅H₇₀O₅N₄Mg
(2) Chlorophyll 'a' — C₅₅H₇₂O₅N₄Mg
(3) Chlorophyll 'b' — C₅₅H₇₀O₆N₄Mg
(4) Xanthophyll — C₅₀H₇₀O₅Mg

• A. (1) and (2) are correct
• B. (3) and (4) are correct
• C. (2) and (3) are correct
• D. (1) and (4) are correct

4. The Nobel Prize in Medicine was awarded to Victor Ambros and Gary Ruvkun for their discovery of

• A. Expression Sequence Tags
• B. Micro RNA
• C. DNA micro array
• D. SNP's

5. Which of the following statements are true about crew selection and training for "Gaganyaan Mission"?
(i) Crews are selected after clinical, psychological and aeromedical examination.
(ii) Mission-specific training will be conducted at ISRO, Trivandrum.
(iii) Selected astronauts will undergo their generic spaceflight training in Yuri Gagarin Cosmonaut training centre, Russia.

• A. (i) and (ii) only
• B. (ii) and (iii) only
• C. (iii) only
• D. (i) and (iii) only

6. Which of the following statements are correct about PFAS?
(i) PFAS is per and poly fluoro alkyl substances.
(ii) It is used in paint industries.
(iii) PFAS are endocrine disrupters.

• A. (i) and (ii) are correct
• B. (ii) and (iii) are correct
• C. (i) and (iii) are correct
• D. (i) only correct

7. The biological oxygen demand is the amount of dissolved oxygen required by in water.

• A. Microbes
• B. Plants
• C. Animals
• D. Seaweeds

8. Which of the following is the first Indian Geo-Stationary Satellite?

• A. INSAT 3D
• B. LANDSAT 8
• C. IKONOS 1
• D. QUICK BIRD

9. Who among the following tribes act as cattle keepers?

• A. Dhimor
• B. Kewats
• C. Rawats
• D. Bhils

10. Assertion [A]: Development of a nation depends on infrastructure facilities.
Reason [R] : Transport and communication are the back bone of economic development.

• A. [A] and [R] is true and [R] is correct explanation for [A]
• B. [A] is true but [R] is false
• C. [A], [R] is true but [R] is not the correct explanation of [A]
• D. Both [A] and [R] are not correct

11. Match the following type :
Match correctly the river and its places of rises.
(a) The Krishna 1. Garwal Tibet border
(b) The Alaknanda 2. Central Himalayas
(c) The Gandak 3. Tibet
(d) The Brahmaputra 4. Sahyadris

• A. 3 2 4 1
• B. 1 4 2 3
• C. 2 1 3 4
• D. 4 1 2 3

12. Arrange the following events in chronological order.
(i) Ahemadabad Mill Strike
(ii) Champaran Satyagraha
(iii) Kheda Satyagraha
(iv) Rowlatt Satyagraha

• A. (ii), (i), (iii), (iv)
• B. (iv), (iii), (ii), (i)
• C. (i), (ii), (iii), (iv(
• D. (iii), (ii), (i), (iv)

13. How did education contribute to the Indian Renaissance?
(i) Contributed Growth of Money
(ii) Promoting scientific learning
(iii) Promoted social and cultural progress

• A. (i) only
• B. (ii) and (iii) only
• C. (ii) only
• D. (i) and (iii) only

14. Match the following
(a) Peshwa 1. Foreign Secretary
(b) Amatya 2. Chief Minister
(c) Sachiva 3. Finance Minister
(d) Sumant 4. Superintendent

• A. 1 2 3 4
• B. 1 4 2 3
• C. 2 3 4 1
• D. 3 2 1 4

15. Choose the right matches among type:
(a) 'Indian World' Journal 1. J.S. Buckingham
(b) 'Telegraph' Journal 2. Charles MacLean
(c) 'Bengal Kirkaru' Journal 3. Mekenly
(d) 'Calcutta' Journal 4. Duane

• A. 4 3 2 1
• B. 2 3 1 4
• C. 3 1 4 2
• D. 1 4 2 3

16. Reason and Assertion type:
Assertion [A]: Cinema was becoming popular in 1940's.
Reason [R]: Anna could achieve his ideals through Cinema Artists.

• A. [A] is true but [R] is false
• B. Both [A] and [R] are true; and [R] is the correct explanation of [A]
• C. [A] is false but [R] is true
• D. Both [A] and [R] are true, but [R] is not the correct explanation of [A]

17. Which one of the following is correctly matched?

• A. Champaran Agitation - Bal Gangadhar Tilak
• B. Ghadar Party - Lala Hardayal
• C. Ganapathy Festival - Annie Besant
• D. Home Rule Movement - Gandhiji

18. In Tuticorin, Tamil Nadu, Subramaniya Siva Campaigned for strike in 1908.

• A. March - April
• B. January - February
• C. February - March
• D. April - May

19. Which of the following statements are true?
(i) The National population policy, was promulgated in April 1976.
(ii) Included provisions for health care, nutrition and more stress on Education for girls.
(iii) The goal was an eventual average family size of two children.

• A. (i) only correct
• B. (i) and (ii) only correct
• C. (ii) and (iii) only correct
• D. (1), (ii) and (ii) correct

20. Who founded the Satya Shodak Samaj in 1873?

• A. Jyoti Rao Phule
• B. Sri Narayana Guru
• C. Pandita Ramabai
• D. Dayananda Saraswati

21. Which among the following was the first Christian Ashram established in South?

• A. C.F. Ashram at Pachalur
• B. Christukula Ashram at Tiruppatur
• C. Zion Prayer Center at Madurai
• D. Dyana Ashram at Chennai

22. The Talaikota Battle was also called as _____________.

• A. Toppur Battle
• B. Rakahasi - Tangadi Battle
• C. Battle of Rajagambira Rajyam
• D. Battle of Kannanur Kuppam

23. Shivaji was crowned as an independent king at

• A. Raigad
• B. Surat
• C. Ahmedabad
• D. Poona

24. In the Indus Valley civilization the major commodities in Internal trade consist of
(1) Cotton
(2) Lumber
(3) Grain and food stuffs
(4) Livestock

• A. (1), (2), (3) only correct
• B. (1), (2), (4) only correct
• C. (1), (2), (3), (4) correct
• D. (1), (4) only correct

25. Which is/are the aims of a sound "Theosophical Society"?
(i) Believes in Karma, Yoga and Indian Philosophy.
(ii) Universal spiritual brotherhood.
(iii) To protect the society from evil practices.

• A. (i) only correct
• B. (ii) and (iii) only correct
• C. (i) and (ii) only correct
• D. (ii) only correct