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NDA GK Questions 2026

Static general knowledge makes up about 90% of Part B of the NDA General Ability Test, about 360 of its 400 marks. The NDA & NA (II) 2026 notice divides it into five sections: Physics (about 25%), Chemistry (about 15%), General Science (about 10%), History, Freedom Movement etc. (about 20%) and Geography (about 20%). Half of Part B is science. Physics covers matter, motion, gravitation, heat, sound, light, magnetism, electricity and the working of everyday devices such as the siphon, pressure cooker, periscope and safety fuse. Chemistry covers changes of matter, elements and compounds, common gases, acids, bases and salts, carbon, fertilizers and the materials used to make soap, glass, cement and gunpowder. General Science covers cells, the human body, diseases, diet, the solar system and eminent scientists. Section D spans Indian history and culture, the freedom movement, the Constitution, Five Year Plans, Panchayati Raj and world history from the Renaissance to the Russian Revolution. Geography covers the Earth, rocks, oceans, the atmosphere and climate, and India's resources, industries, ports and trade. This page holds GK24's topic-wise GK notes for NDA, in English and Hindi, written as short facts and tables. Read a topic, then solve its quiz and previous-year questions on this site.

NDA GK Questions with Answers

Q2661.GeographyAsked in: NDA · NDA-II 2023, GATEasy

A geographical grid has : 1. Lines that run east to west around the globe to mark latitude 2. Lines that run north to south from north pole to south pole indicate longitude 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

The geographical grid is the network of parallels of latitude, running east to west, and meridians of longitude, running from the North Pole to the South Pole.

Q2663.GeographyAsked in: NDA · NDA-II 2024, GATMedium

Which one among the following statements with reference to Benguela current is NOT correct?

  1. A.It influences the climate of the West coast of North Africa
  2. B.It is a cold current
  3. C.Its direction is from South to North
  4. D.It flows in the Atlantic Ocean
Show answer
Correct answer: A. It influences the climate of the West coast of North Africa

The Benguela current flows along the west coast of southern Africa, off Namibia and South Africa, not North Africa, so this statement is the incorrect one.

Q2666.General ScienceAsked in: NDA · NDA-I 2026, GATEasy

Consider the following statement : "Acids are substances that dissociate in water to give hydrogen ions H⁺ (aq), and bases are substances that produce hydroxyl ions OH⁻ (aq)." The above statement is based on which one of the following concepts?

  1. A.Brønsted-Lowry concept
  2. B.Lewis acid-base concept
  3. C.Arrhenius concept
  4. D.Conjugate acid-base concept
Show answer
Correct answer: C. Arrhenius concept

Defining acids and bases by the H⁺ and OH⁻ ions they release in water is exactly the theory Svante Arrhenius gave in 1884.

Q2667.General ScienceAsked in: NDA · NDA-II 2026, GATHard

Consider the following statements regarding the properties of hydrogen and water : I. Tritium, the isotope of hydrogen, is radioactive and emits low energy alpha particles. II. In the gas phase, the structure of water is linear. III. The basic principle of a hydrogen economy is the transportation and storage of energy in the form of liquid or gaseous molecular hydrogen. Which of the statements given above is/are not correct?

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

Tritium gives out beta particles, not alpha particles, and a water molecule is bent, not linear, so these two statements are wrong.

Q2669.DefenceMedium

In the context of India's maritime vision, MAHASAGAR stands for which of the following?

  1. A.Maritime Advancement for Harmony, Security and Growth Around Regions
  2. B.Mutual and Holistic Advancement for Security and Growth Across Regions
  3. C.Maritime Alliance for Shared Growth and Regional Resilience
  4. D.Mutual Assistance for Harbour Security and Growth Across Regions
Show answer
Correct answer: B. Mutual and Holistic Advancement for Security and Growth Across Regions

This is the expansion given for MAHASAGAR, the vision that Lokayan-2026 is said to advance as INS Sudarshini sails through international waters as an ambassador of India, winning goodwill and building maritime partnerships.

Q2673.Indian PolityAsked in: CDS · CDS-I 2021, GKHard

Which of the following statements regarding the 'casting vote' in the Parliament is/are correct?

1. It is cast by the speaker or a person acting as such.

2. It is cast in addition to voting in the first instance.

3. It is cast in the case of equality of votes.

4. It is always cast to maintain the status quo.

Select the correct answer using the code given below:

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

Under Article 100, the Speaker or the person acting as such does not vote in the first instance, but has a casting vote when votes are equally divided.

Q2676.General ScienceAsked in: CDS · CDS-II 2023, GKEasy

Which one of the following statements is correct about diamond and graphite?

  1. A.Diamond and graphite have similar physical and chemical properties.
  2. B.Diamond is hard but graphite is smooth and slippery.
  3. C.Diamond and graphite are both non-conductors of electricity.
  4. D.Both diamond and graphite have similar structures.
Show answer
Correct answer: B. Diamond is hard but graphite is smooth and slippery.

Both are pure forms of carbon, but their atoms are arranged differently, which gives them opposite physical properties. Diamond and graphite are allotropes of carbon.

Q2677.General ScienceAsked in: CDS · CDS-I 2025, GKEasy

The force with which the Earth attracts an object is called:

  1. A.Weight of the object
  2. B.Mass of the object
  3. C.Density of the object
  4. D.Magnitude of the object
Show answer
Correct answer: A. Weight of the object

Weight is the gravitational force with which the Earth pulls an object towards its centre. Weight is given by W = mg, where m is the mass and g is the acceleration due to gravity, about 9.8 m/s² near the Earth's surface.

Q2680.GeographyAsked in: CDS · CDS-II 2026, GKMedium

Consider the following statements with reference to earthquakes:

1. Collapse earthquakes are most common.

2. Tsunamis are waves generated by the tremors and not an earthquake in itself.

3. High magnitude earthquakes i.e. 8+ are quite rare whereas 'tiny' types occur almost every minute.

Which of the statements given above are correct?

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

Statement 1 is false because tectonic earthquakes, not collapse earthquakes, are the most common type. Earthquakes are grouped by cause: tectonic (sliding of rocks along a fault), volcanic, collapse (the roofs of underground mines or caverns falling in), explosion (from nuclear or chemical blasts) and reservoir-induced.