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Defence GK Questions 2026

Static GK carries most of the General Knowledge marks in the defence exams, and science carries the largest share of it. In NDA & NA, Physics, Chemistry and General Science are about half of the 400 marks of Part B, and History, the freedom movement and Geography are about 20% each, as per the notice. In the CDS (II) 2026 General Knowledge paper, GK24 counted about 37 science questions, about 20 each on Polity and History, about 15 on Geography and environment and about 10 on the Economy; this count is guidance, not an official break-up. The Army's Agniveer CEE gives 15 of its 50 General Duty questions to General Knowledge and 15 to General Science, which covers cells, the human body, plants and animals and common epidemics. Its GK list names history, culture and geography of India and its neighbours, the Constitution, inventions and discoveries, books and authors, and the Indian Armed Forces. This page holds GK24's topic-wise GK notes and GK questions tagged for NDA, CDS and Agniveer, in English and Hindi: General Science, Indian History, Art and Culture, Indian Polity, Geography, Indian Economy and Static GK. Read one topic at a sitting, then solve its questions and the previous-year questions of your exam to see what stayed with you.

Defence GK Questions with Answers

Q4904.Science & TechnologyEasy

At which venue is ESTIC-2026, where DRDO will lead a session on semiconductors, scheduled to be held?

  1. A.Vigyan Bhawan, New Delhi
  2. B.Bharat Mandapam, New Delhi
  3. C.Yashobhoomi, Dwarka
  4. D.Bengaluru Palace Grounds
Show answer
Correct answer: B. Bharat Mandapam, New Delhi

The Emerging Science, Technology and Innovation Conclave, shortened to ESTIC-2026, is to be held there from 27 to 29 October 2026, and DRDO will lead its thematic session on semiconductors and next-generation chips.

Q4905.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2024, GS Paper IEasy

Consider the following statements :

Statement-I : Many chewing gums found in the market are considered a source of environmental pollution.

Statement-II : Many chewing gums contain plastic as gum base.

Which one of the following is correct in respect of the above statements?

  1. A.Both Statement-I and Statement-II are correct and Statement-II explains Statement-I
  2. B.Both Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I
  3. C.Statement-I is correct, but Statement-II is incorrect
  4. D.Statement-I is incorrect, but Statement-II is correct
Show answer
Correct answer: A. Both Statement-I and Statement-II are correct and Statement-II explains Statement-I

Chewing gum pollutes because its gum base is largely made of synthetic plastic polymers that do not break down. Gum was once made from chicle, a natural latex from the sapodilla tree.

Q4906.GeographyAsked in: UPSC Civil Services · CSE Prelims 2025, GS Paper IMedium

Which of the following are the evidences of the phenomenon of continental drift?

I. The belt of ancient rocks from Brazil coast matches with those from Western Africa.

II. The gold deposits of Ghana are derived from the Brazil plateau when the two continents lay side by side.

III. The Gondwana system of sediments from India is known to have its counterparts in six different landmasses of the Southern Hemisphere.

Select the correct answer using the code given below.

  1. A.I and III only
  2. B.I and II only
  3. C.I, II and III
  4. D.II and III only
Show answer
Correct answer: C. I, II and III

All three are classic pieces of evidence used to support Alfred Wegener's theory that the continents were once joined. Wegener proposed in 1912 that all continents formed one supercontinent, Pangaea, which later broke apart.

Q4907.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2026, GS Paper IMedium

With respect to the Western Hoolock Gibbons, which of the following statements is/are correct?

1. A Sanctuary in North-east India is home to this ape species listed as Endangered in the International Union for Conservation of Nature (IUCN) Red List.

2. They have specialized brachiation and can easily swing between trees.

3. They possess a strong and heavy build like gorillas, yet are remarkably agile tree climbers.

Select the answer using the code given below :

  1. A.1 only
  2. B.1 and 2
  3. C.2 and 3
  4. D.3 only
Show answer
Correct answer: B. 1 and 2

The Western Hoolock Gibbon is an Endangered ape protected in a sanctuary in Assam, and it moves by swinging from branch to branch, but it is a light, slender animal, not heavily built like a gorilla.

Q4908.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2016, GS Paper IEasy

In which of the following regions of India are you most likely to come across the 'Great Indian Hornbill' in its natural habitat?

  1. A.Sand deserts of northwest India
  2. B.Higher Himalayas of Jammu and Kashmir
  3. C.Salt marshes of western Gujarat
  4. D.Western Ghats
Show answer
Correct answer: D. Western Ghats

The Great Hornbill lives in tall, evergreen and moist deciduous forests, and the Western Ghats are one of its two main homes in India.

Q4910.Science & TechnologyAsked in: UPSC Civil Services · CSE Prelims 2018, GS Paper IMedium

The identity platform 'Aadhaar' provides open "Application Programming Interfaces (APIs)". What does it imply?

1. It can be integrated into any electronic device.

2. Online authentication using iris is possible.

Which of the statements given above is/are correct?

  1. A.1 only
  2. B.2 only
  3. C.Both 1 and 2
  4. D.Neither 1 nor 2
Show answer
Correct answer: C. Both 1 and 2

Open APIs let any device or application connect to Aadhaar's authentication service, and that service accepts iris scans as well as fingerprints, OTP and demographic data.

Q4911.Art & CultureAsked in: UPSC Civil Services · CSE Prelims 2019, GS Paper IMedium

With reference to Mian Tansen, which one of the following statements is not correct?

  1. A.Tansen was the title given to him by Emperor Akbar.
  2. B.Tansen composed Dhrupads on Hindu gods and goddesses.
  3. C.Tansen composed songs on his patrons.
  4. D.Tansen invented many Ragas.
Show answer
Correct answer: A. Tansen was the title given to him by Emperor Akbar.

The title "Tansen" is traced to Raja Vikramajit of Gwalior, long before he reached Akbar's court. Born Ramtanu near Gwalior, Tansen trained under Swami Haridas in the Dhrupad tradition that Raja Man Singh Tomar had made famous in Gwalior.

Q4912.Indian HistoryAsked in: UPSC Civil Services · CSE Prelims 2020, GS Paper IHard

The Vital-Vidhvansak, the first monthly journal to have the untouchable people as its target audience was published by

  1. A.Gopal Baba Walangkar
  2. B.Jyotiba Phule
  3. C.Mohandas Karamchand Gandhi
  4. D.Bhimrao Ramji Ambedkar
Show answer
Correct answer: A. Gopal Baba Walangkar

Walangkar, a pioneer of the Dalit movement in Maharashtra, brought out the Vital-Vidhvansak from 1888. Gopal Baba Walangkar belonged to the Mahar community and had served in the army before turning to social reform.

Q4913.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2021, GS Paper IMedium

In the nature, which of the following is/are most likely to be found surviving on a surface without soil?

1. Fern

2. Lichen

3. Moss

4. Mushroom

Select the correct answer using the code given below.

  1. A.1 and 4 only
  2. B.2 only
  3. C.2 and 3
  4. D.1, 3 and 4
Show answer
Correct answer: C. 2 and 3

Lichens and mosses can live on bare rock, tree bark and walls without any soil, and they are the pioneer species of primary succession.

Q4914.Indian PolityAsked in: UPSC Civil Services · CSE Prelims 2022, GS Paper IMedium

With reference to anti-defection law in India, consider the following statements :

1. The law specifies that a nominated legislator cannot join any political party within six months of being appointed to the House.

2. The law does not provide any time-frame within which the presiding officer has to decide a defection case.

Which of the statements given above is/are correct?

  1. A.1 only
  2. B.2 only
  3. C.Both 1 and 2
  4. D.Neither 1 nor 2
Show answer
Correct answer: B. 2 only

The Tenth Schedule lets a nominated member join a party within six months, and it sets no deadline for the presiding officer's decision.

Q4916.Static GKAsked in: UPSC Civil Services · CSE Prelims 2016, GS Paper IMedium

With reference to 'Organization for the Prohibition of Chemical Weapons (OPCW)', consider the following statements :

1. It is an organization of European Union in working relation with NATO and WHO.

2. It monitors chemical industry to prevent new weapons from emerging.

3. It provides assistance and protection to States (Parties) against chemical weapons threats.

Which of the statements given above is/are correct?

  1. A.1 only
  2. B.2 and 3 only
  3. C.1 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: B. 2 and 3 only

The OPCW is the independent global body that implements the Chemical Weapons Convention; it is not an organ of the European Union.

Q4917.Indian HistoryAsked in: UPSC Civil Services · CSE Prelims 2019, GS Paper IHard

With reference to Indian National Movement, consider the following pairs :

Person : Position held

1. Sir Tej Bahadur Sapru : President, All India Liberal Federation

2. K. C. Neogy : Member, The Constituent Assembly

3. P. C. Joshi : General Secretary, Communist Party of India

Which of the pairs given above is/are correctly matched?

  1. A.1 only
  2. B.1 and 2 only
  3. C.3 only
  4. D.1, 2 and 3
Show answer
Correct answer: D. 1, 2 and 3

Each person held the position shown against his name. Sir Tej Bahadur Sapru, an eminent lawyer and Moderate, was a leading figure of the All India (National) Liberal Federation formed by Moderates who left the Congress in 1918, and served as its president; he also attended the Round Table Conferences.

Q4918.Indian HistoryAsked in: UPSC Civil Services · CSE Prelims 2020, GS Paper IMedium

The Gandhi-Irwin Pact included which of the following?

1. Invitation to Congress to participate in the Round Table Conference

2. Withdrawal of Ordinances promulgated in connection with the Civil Disobedience Movement

3. Acceptance of Gandhiji's suggestion for enquiry into police excesses

4. Release of only those prisoners who were not charged with violence

Select the correct answer using the code given below:

  1. A.1 only
  2. B.1, 2 and 4 only
  3. C.3 only
  4. D.2, 3 and 4 only
Show answer
Correct answer: B. 1, 2 and 4 only

The pact invited the Congress to the Round Table Conference, withdrew the emergency ordinances and released non-violent prisoners, but it did not grant an enquiry into police excesses.

Q4919.General ScienceAsked in: UPSC Civil Services · CSE Prelims 2021, GS Paper IMedium

With reference to furnace oil, consider the following statements :

1. It is a product of oil refineries.

2. Some industries use it to generate power.

3. Its use causes sulphur emissions into environment.

Which of the statements given above are correct?

  1. A.1 and 2 only
  2. B.2 and 3 only
  3. C.1 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: D. 1, 2 and 3

Furnace oil is a heavy refinery product, it is burnt by industry for heat and power, and its high sulphur content makes it a polluting fuel.

Q4920.Indian PolityAsked in: UPSC Civil Services · CSE Prelims 2022, GS Paper IMedium

Which of the following is/are the exclusive power(s) of Lok Sabha ?

1. To ratify the declaration of Emergency

2. To pass a motion of no-confidence against the Council of Ministers

3. To impeach the President of India

Select the correct answer using the code given below:

  1. A.1 and 2
  2. B.2 only
  3. C.1 and 3
  4. D.3 only
Show answer
Correct answer: B. 2 only

Only the Lok Sabha can pass a no-confidence motion, because the Council of Ministers is collectively responsible to it under Article 75(3).

GK Questions for sub-exams