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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

Q4181.Indian PolityAsked in: UPSC CAPF · CAPF 2019, Paper IMedium

Which of the following statements about Max Weber's ideal theory of Bureaucracy is/are correct?

1. It refers to the dominant class character.

2. Bureaucracy is associated with structural and behavioral characteristics.

Select the correct 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

Weber's ideal type describes bureaucracy through its structure and the conduct of its officials, not through class domination. Max Weber, the German sociologist, described the ideal type of bureaucracy as the most rational form of administration under legal-rational authority.

Q4182.Indian PolityAsked in: UPSC CAPF · CAPF 2021, Paper IMedium

Which one of the following statements about Public Accounts Committee is correct?

  1. A.The Committee consists of not more than 15 members from the Lok Sabha and 10 members from the Rajya Sabha.
  2. B.The Finance Minister is an ex officio member of the Committee.
  3. C.A member of the Committee is given a term for one year.
  4. D.The term of the office of the members of the Committee from the Rajya Sabha is extended even when they retire from the Rajya Sabha.
Show answer
Correct answer: C. A member of the Committee is given a term for one year.

The Public Accounts Committee is constituted afresh every year, so each member's term is one year. The PAC was first set up in 1921 under the Montagu-Chelmsford Reforms.

Q4183.General ScienceAsked in: UPSC CAPF · CAPF 2023, Paper IEasy

Which one of the following statements is correct?

  1. A.Alloys are mixtures.
  2. B.Alloys are compounds.
  3. C.Alloys are always made up of metals.
  4. D.All alloys contain carbon as one of their components.
Show answer
Correct answer: A. Alloys are mixtures.

An alloy is made by melting and mixing its components, which keep their own properties and are not joined in a fixed ratio by chemical bonds.

Q4184.Indian PolityAsked in: UPSC CAPF · CAPF 2026, Paper IHard

Which of the following statements in respect of the election of the President of India is/are correct?

1. By convention, the Secretary General, Lok Sabha or the Secretary General, Rajya Sabha is appointed as the Returning Officer by rotation.

2. Members of the Electoral College can vote according to their wish and are not bound by any party whip.

3. The provisions of NOTA are applicable.

Select the answer using the code given below.

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

Statements 1 and 2 are correct, but NOTA does not apply to the presidential election. The Election Commission conducts the election under Article 324 and the Presidential and Vice-Presidential Elections Act, 1952.

Q4185.General ScienceAsked in: NDA · NDA-I 2018, GATEasy

Brine is an aqueous solution of

  1. A.NaCl
  2. B.NaOH
  3. C.NaHCO₃
  4. D.Na₂CO₃
Show answer
Correct answer: A. NaCl

Brine is a concentrated solution of sodium chloride, common salt, in water. Brine is the starting point of the chlor-alkali process: passing electricity through it gives sodium hydroxide, chlorine gas and hydrogen gas, which is why the process is named after chlorine and alkali.

Q4186.General ScienceAsked in: NDA · NDA-II 2018, GATEasy

The full form of LED is

  1. A.Light Emitting Diode
  2. B.Light Emitting Device
  3. C.Light Enhancing Device
  4. D.Light Enhancing Diode
Show answer
Correct answer: A. Light Emitting Diode

An LED is a semiconductor p–n junction diode that gives out light when current flows through it in the forward direction.

Q4187.GeographyAsked in: NDA · NDA-I 2019, GATHard

Which one of the following is NOT true in reference to Air mass?

  1. A.Air mass forms either in tropical or in polar region
  2. B.Air mass develops on continents as well as over ocean
  3. C.Air mass develops in a cyclonic condition
  4. D.Air mass changes the weather conditions
Show answer
Correct answer: C. Air mass develops in a cyclonic condition

Air masses form under calm, stable, anticyclonic (high-pressure) conditions, not in cyclones. An air mass is a huge body of air with nearly uniform temperature and humidity across it.

Q4188.General ScienceAsked in: NDA · NDA-II 2019, GATEasy

A car starts from Bengaluru, goes 50 km in a straight line towards south, immediately turns around and returns to Bengaluru. The time taken for this round trip is 2 hours. The magnitude of the average velocity of the car for this round trip

  1. A.is 0.
  2. B.is 50 km/hr.
  3. C.is 25 km/hr.
  4. D.cannot be calculated without knowing acceleration.
Show answer
Correct answer: A. is 0.

Average velocity is total displacement divided by time, and the car ends where it started, so its displacement is zero.

Q4191.Indian PolityAsked in: NDA · NDA-II 2021, GATMedium

Which one of the following is not a feature of the Constitution of India?

  1. A.It provides a set of basic rules.
  2. B.It specifies the power of the Government.
  3. C.It is the supreme law of the land.
  4. D.It specifies the supremacy of the judiciary.
Show answer
Correct answer: D. It specifies the supremacy of the judiciary.

The Constitution makes itself supreme, not any one organ; it balances parliamentary sovereignty with judicial review. India took a middle path between the British idea of parliamentary sovereignty and the American idea of judicial supremacy.

Q4192.General ScienceAsked in: NDA · NDA-I 2022, GATEasy

The magnetic field produced by a current-carrying straight wire at a point outside the wire depends

  1. A.inversely on the distance from it
  2. B.directly on the distance from it
  3. C.inversely at short distances and directly at large distances from it
  4. D.directly on the distance (at short distances) and inversely on the distance (at long distances) from it
Show answer
Correct answer: A. inversely on the distance from it

Outside a long straight wire, the field is B = μ₀I/(2πr), so doubling the distance halves the field. This result follows from Ampère's circuital law, or from the Biot–Savart law applied to a long wire.

Q4197.GeographyAsked in: NDA · NDA-I 2024, GATMedium

Consider the following statements regarding the International Date Line :

1. It is roughly 180° meridian, which deviates slightly East and West to avoid land areas surrounded by the Atlantic Ocean.

2. The date to the East of this line is (24 hours) earlier than to the West.

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 date just east of the line is one day behind the date just west of it, but the line runs through the Pacific Ocean, not the Atlantic.

Q4199.General ScienceAsked in: NDA · NDA-II 2025, GATEasy

Which one of the following statements about surface tension is correct?

  1. A.It increases when temperature increases
  2. B.It decreases when temperature increases
  3. C.It will remain same with increase or decrease of temperature
  4. D.It will always decrease with increase or decrease of temperature
Show answer
Correct answer: B. It decreases when temperature increases

Heating weakens the attraction between the molecules of a liquid, so its surface pulls less tightly. Surface tension arises because molecules at the surface are pulled inward by their neighbours, making the surface behave like a stretched skin.

Q4200.General ScienceAsked in: NDA · NDA-I 2026, GATEasy

It has been observed that a mirror always forms the image between the pole and the focus, irrespective of the location of the object. Which one of the following is correct in respect of the nature of the mirror?

  1. A.It is a plane mirror.
  2. B.It is a convex mirror.
  3. C.It is a concave mirror of small focal length.
  4. D.It is a concave mirror of large focal length.
Show answer
Correct answer: B. It is a convex mirror.

For any real object, a convex mirror forms a virtual, erect and smaller image behind the mirror, between the pole and the focus.

GK Questions for sub-exams