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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

Q2481.General ScienceAsked in: UPSC Civil Services · CSE Prelims 2021, GS Paper IEasy

The term 'ACE2' is talked about in the context of

  1. A.genes introduced in the genetically modified plants
  2. B.development of India's own satellite navigation system
  3. C.radio collars for wildlife tracking
  4. D.spread of viral diseases
Show answer
Correct answer: D. spread of viral diseases

ACE2 is the receptor through which the coronavirus SARS-CoV-2, the cause of COVID-19, enters human cells. ACE2 stands for angiotensin-converting enzyme 2, a protein on the surface of cells in the lungs, heart, blood vessels, kidneys and gut, where it normally helps control blood pressure.

Q2482.Indian PolityAsked in: UPSC Civil Services · CSE Prelims 2024, GS Paper IMedium

With reference to the Speaker of the Lok Sabha, consider the following statements : While any resolution for the removal of the Speaker of the Lok Sabha is under consideration 1. He/She shall not preside. 2. He/She shall not have the right to speak. 3. He/She shall not be entitled to vote on the resolution in the first instance. Which of the statements given above is/are correct?

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

Article 96 of the Constitution sets out the Speaker's position while a resolution for his or her removal is being considered.

Q2483.Indian PolityAsked in: UPSC Civil Services · CSE Prelims 2025, GS Paper IHard

Consider the following statements about Lokpal : I. The power of Lokpal applies to public servants of India, but not to the Indian public servants posted outside India. II. The Chairperson or a Member shall not be a Member of the Parliament or a Member of the Legislature of any State or Union Territory, and only the Chief Justice of India, whether incumbent or retired, has to be its Chairperson. III. The Chairperson or a Member shall not be a person of less than forty-five years of age on the date of assuming office as the Chairperson or Member, as the case may be. IV. Lokpal cannot inquire into the allegations of corruption against a sitting Prime Minister of India. Which of the statements given above is/are correct?

  1. A.III only
  2. B.II and III
  3. C.I and IV
  4. D.None of the above statements is correct
Show answer
Correct answer: A. III only

Under the Lokpal and Lokayuktas Act, 2013, only the age rule holds. Statement III is right: a Chairperson or Member must be at least 45 years old on the date of taking office.

Q2484.Indian HistoryAsked in: UPSC Civil Services · CSE Prelims 2016, GS Paper IHard

Consider the following : 1. Calcutta Unitarian Committee 2. Tabernacle of New Dispensation 3. Indian Reform Association Keshab Chandra Sen is associated with the establishment of which of the above?

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

Keshab Chandra Sen founded the Tabernacle of New Dispensation and the Indian Reform Association, but not the Calcutta Unitarian Committee.

Q2485.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2017, GS Paper IMedium

Consider the following statements: 1. Climate and Clean Air Coalition (CCAC) to Reduce Short Lived Climate Pollutants is a unique initiative of G20 group of countries. 2. The CCAC focuses on methane, black carbon and hydrofluorocarbons. 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 CCAC is not a G20 body, but it does target methane, black carbon and HFCs. The Climate and Clean Air Coalition was launched in February 2012 by the UN Environment Programme together with six countries: Bangladesh, Canada, Ghana, Mexico, Sweden and the United States.

Q2486.Science & TechnologyAsked in: UPSC Civil Services · CSE Prelims 2018, GS Paper IMedium

Consider the following pairs : Terms sometimes seen in news — Context/Topic 1. Belle II experiment — Artificial Intelligence 2. Blockchain technology — Digital/Cryptocurrency 3. CRISPR-Cas9 — Particle Physics Which of the pairs given above is/are correctly matched ?

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

Only blockchain is matched with its right field. Belle II is a particle physics experiment at the SuperKEKB electron-positron collider in Tsukuba, Japan; it studies B mesons to look for physics beyond the Standard Model, and Indian institutes such as TIFR take part in it.

Q2487.General ScienceAsked in: UPSC Civil Services · CSE Prelims 2021, GS Paper IHard

With reference to street-lighting, how do sodium lamps differ from LED lamps? 1. Sodium lamps produce light in 360 degrees but it is not so in the case of LED lamps. 2. As street-lights, sodium lamps have longer life span than LED lamps. 3. The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street-lighting. Select the correct answer using the code given below.

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

Statements 1 and 3 describe real differences; statement 2 gets the life span backwards. A sodium vapour lamp is a glowing tube that sends light out in all directions, through 360 degrees, so reflectors are needed to push the light down onto the road and some light is wasted.

Q2489.Science & TechnologyAsked in: UPSC Civil Services · CSE Prelims 2018, GS Paper IHard

With reference to the Genetically Modified mustard (GM mustard) developed in India, consider the following statements : 1. GM mustard has the genes of a soil bacterium that give the plant the property of pest-resistance to a wide variety of pests. 2. GM mustard has the genes that allow the plant cross-pollination and hybridization. 3. GM mustard has been developed jointly by the IARI and Punjab Agricultural University. Which of the statements given above is/are correct ?

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

India's GM mustard, Dhara Mustard Hybrid-11 (DMH-11), is built for hybrid seed production, not pest resistance. It carries the barnase and barstar genes taken from the soil bacterium Bacillus amyloliquefaciens.

Q2490.Indian HistoryAsked in: UPSC Civil Services · CSE Prelims 2020, GS Paper IHard

With reference to the history of India, consider the following pairs : Famous Place — Present State 1. Bhilsa — Madhya Pradesh 2. Dwarasamudra — Maharashtra 3. Girinagar — Gujarat 4. Sthanesvara — Uttar Pradesh Which of the pairs given above are correctly matched?

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

Bhilsa and Girinagar are matched correctly; Dwarasamudra and Sthanesvara are not. Bhilsa is the old name of Vidisha in Madhya Pradesh, near Sanchi, where the Heliodorus pillar stands.

Q2491.General ScienceAsked in: UPSC Civil Services · CSE Prelims 2021, GS Paper IHard

Consider the following statements : 1. Adenoviruses have single-stranded DNA genomes whereas retroviruses have double-stranded DNA genomes. 2. Common cold is sometime caused by an adenovirus whereas AIDS is caused by a retrovirus. 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

Statement 1 has both genomes wrong, while statement 2 is a correct fact. Adenoviruses carry a double-stranded DNA genome.

Q2492.Static GKAsked in: UPSC Civil Services · CSE Prelims 2022, GS Paper IMedium

Consider the following : 1. Asian Infrastructure Investment Bank 2. Missile Technology Control Regime 3. Shanghai Cooperation Organisation India is a member of which of the above ?

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

India is a member of all three groupings. India is a founding member of the Asian Infrastructure Investment Bank, which began work in 2016 with its headquarters in Beijing; India is its second-largest shareholder after China.

Q2493.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2025, GS Paper IMedium

Which organization has enacted the Nature Restoration Law (NRL) to tackle climate change and biodiversity loss?

  1. A.The European Union
  2. B.The World Bank
  3. C.The Organization for Economic Cooperation and Development
  4. D.The Food and Agriculture Organization
Show answer
Correct answer: A. The European Union

The Nature Restoration Law is a regulation of the European Union, adopted by its Parliament and Council in 2024. It is part of the European Green Deal and the EU Biodiversity Strategy for 2030.

Q2496.General ScienceAsked in: UPSC CAPF · CAPF 2026, Paper IEasy

Which combination of three resistors R1, R2 and R3 has minimum total resistance? (Consider R1 = 1 Ω, R2 = 2 Ω and R3 = 3 Ω)

  1. A.When all are connected in parallel
  2. B.When all are connected in series
  3. C.When R1 and R2 are connected in parallel and R3 is in series of them
  4. D.When R1 and R3 are connected in parallel and R2 is in series of them
Show answer
Correct answer: A. When all are connected in parallel

In parallel the equivalent resistance is always smaller than the smallest single resistor, so here it falls below 1 Ω. For resistors in parallel, 1/R = 1/R1 + 1/R2 + 1/R3 = 1/1 + 1/2 + 1/3 = 11/6, so R = 6/11 Ω, about 0.55 Ω. Each extra parallel…

Q2498.Computer AwarenessAsked in: UPSC CAPF · CAPF 2025, Paper IEasy

What is the correct term used for a set of wires used to connect different internal components of the computer system for the purpose of transferring data as well as addresses amongst them?

  1. A.Hub
  2. B.Port
  3. C.Router
  4. D.Bus
Show answer
Correct answer: D. Bus

A bus is the shared set of electrical lines on the motherboard that carries data, addresses and control signals between the CPU, memory and input-output devices.

GK Questions for sub-exams