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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

Q4982.General ScienceAsked in: CDS · CDS-II 2018, GKEasy

Which of the following characteristics is common to hydrogen, nitrogen, oxygen and carbon dioxide?

  1. A.They are all diatomic.
  2. B.They are all gases at room temperature.
  3. C.They are all coloured.
  4. D.They all have same reactivity.
Show answer
Correct answer: B. They are all gases at room temperature.

Hydrogen, nitrogen, oxygen and carbon dioxide all exist as gases at about 25 °C and normal atmospheric pressure. Hydrogen boils at about −253 °C, nitrogen at −196 °C and oxygen at −183 °C, so all three are gases at room temperature.

Q4986.Indian HistoryAsked in: CDS · CDS-I 2021, GKMedium

In 1911, who among the following introduced a bill in the Imperial Legislative Council for introduction of compulsory and free primary education in India?

  1. A.Dadabhai Naoroji
  2. B.Bal Gangadhar Tilak
  3. C.Sir Harcourt Butler
  4. D.Gopal Krishna Gokhale
Show answer
Correct answer: D. Gopal Krishna Gokhale

Gokhale moved the Elementary Education Bill in the Imperial Legislative Council in 1911 to make primary education free and compulsory.

Q4990.General ScienceAsked in: CDS · CDS-I 2023, GKEasy

Consider the following statements about the microphone and the speaker of a mobile phone: 1. The microphone converts sound to a mechanical signal. 2. The microphone converts sound to an electrical signal. 3. The speaker converts a mechanical signal to sound. 4. The speaker converts an electrical signal to sound. Which of the statements given above are correct?

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

A microphone turns sound into an electrical signal, and a speaker turns an electrical signal back into sound. Both are transducers, devices that change energy from one form to another.

Q4991.General ScienceAsked in: CDS · CDS-II 2023, GKMedium

Which one of the following equations is the balanced chemical equation for the given reaction? Fe + H2O → Fe3O4 + H2

  1. A.Fe + 4H2O → Fe3O4 + H2
  2. B.3Fe + H2O → Fe3O4 + 2H2
  3. C.3Fe + 4H2O → Fe3O4 + 4H2
  4. D.3Fe + 4H2O → Fe3O4 + H2
Show answer
Correct answer: C. 3Fe + 4H2O → Fe3O4 + 4H2

Only this equation has the same number of iron, hydrogen and oxygen atoms on both sides. Iron reacts with steam to form iron(II,III) oxide and hydrogen gas.

Q4993.General ScienceAsked in: CDS · CDS-II 2024, GKEasy

Which organelle in animal cells can digest foreign materials?

  1. A.Endoplasmic reticulum
  2. B.Lysosome
  3. C.Golgi body
  4. D.Mitochondria
Show answer
Correct answer: B. Lysosome

Lysosomes are membrane-bound sacs of digestive enzymes that break down foreign material such as bacteria and worn-out cell parts. Lysosomes are formed by the Golgi apparatus and contain hydrolytic enzymes that work in an acidic interior.

Q4994.GeographyAsked in: CDS · CDS-I 2025, GKEasy

Which of the following statements with reference to Humus is/are correct? 1. It is a dark coloured amorphous substance. 2. Being colloidal in nature, it serves as a reservoir of nutrients. Select the answer using the code given below:

  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

Humus is the dark, amorphous organic matter of soil, and its colloidal nature lets it hold nutrients and water for plants.

Q4995.Indian EconomyAsked in: CDS · CDS-II 2025, GKMedium

Which of the following criteria are specified for granting Special Category Status to States in India? 1. Hilly and difficult terrain 2. Economic and infrastructural backwardness 3. Strategic coastal zone 4. Sizeable share of tribal population Select the answer using the code given below:

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

Hilly terrain, economic backwardness and a sizeable tribal population are criteria; the strategic factor is location along international borders, not a coastal zone.

Q4996.Environment & EcologyAsked in: CDS · CDS-I 2026, GKEasy

Consider the following statements with reference to manure and organic farming: 1. Vermicompost is rich in organic matter and nutrients. 2. Biofertilizers and bio-pesticides are not used in organic farming. 3. Crop rotation is beneficial in controlling insects, pests and weeds. Which of the statements given above is/are correct?

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

Vermicompost is a nutrient-rich organic manure and crop rotation helps control pests and weeds, but organic farming does use biofertilizers and bio-pesticides.

Q4997.Indian PolityAsked in: CDS · CDS-II 2026, GKHard

As regards the 'disqualification on ground of defection' as per the Constitution of India, which of the following statements is/are correct? 1. Disqualification on ground of defection does not apply to any nominated member of a House 2. Disqualification on ground of defection does not apply to a member of a House if she/he does not accept the merger of her/his original political party into another and opts to function as a separate group Select the answer using the code given below:

  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 covers nominated members too, but its merger exception protects a member who refuses a merger and sits as a separate group.

Q4998.DefenceMedium

Which two Indian cities is the visiting Czech First Deputy Prime Minister scheduled to visit for industry engagements?

  1. A.Chennai and Hyderabad
  2. B.Bengaluru and Mumbai
  3. C.Pune and Kolkata
  4. D.Ahmedabad and Nagpur
Show answer
Correct answer: B. Bengaluru and Mumbai

Karel Havlicek, the First Deputy Prime Minister and Minister of Industry and Trade of the Czech Republic, is in India on a four-day visit during which he is meeting ministries, trade bodies and businesses, and his itinerary includes visits to industrial units in these two cities.

Q4999.DefenceMedium

Under which mechanism did India and the Czech Republic agree to expand defence industrial cooperation?

  1. A.India-Czech Joint Defence Committee
  2. B.India-Czech Strategic Partnership Council
  3. C.India-Czech Defence Procurement Board
  4. D.India-Czech Military Cooperation Group
Show answer
Correct answer: A. India-Czech Joint Defence Committee

The correct answer is the India-Czech Joint Defence Committee, named in the talks as the mechanism through which the two sides would take their defence industrial engagement further.

Q5000.DefenceEasy

With which country's First Deputy Prime Minister did Defence Minister Rajnath Singh hold bilateral defence talks in New Delhi on 13 October 2026?

  1. A.Poland
  2. B.Czech Republic
  3. C.Slovakia
  4. D.Hungary
Show answer
Correct answer: B. Czech Republic

Rajnath Singh met Karel Havlicek, who is the First Deputy Prime Minister as well as the Minister of Industry and Trade of the Czech Republic, in New Delhi, and the two reviewed the entire range of defence industrial cooperation between their countries.

GK Questions for sub-exams