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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

Q1961.DefenceMedium

Which of these buildings is NOT named among the Ministry of Defence offices where Special Campaign 6 activities are being carried out?

  1. A.Sena Bhawan
  2. B.Vayu Bhawan
  3. C.Kartavya Bhawan-II
  4. D.Nirman Bhawan
Show answer
Correct answer: D. Nirman Bhawan

The maintenance and cleaning of offices, the segregation and disposal of electronic waste and related activities are being carried out across various offices and buildings of the Ministry of Defence, including Sena Bhawan, Kartavya Bhawan-II, Vayu Bhawan and the offices on KG Marg.

Q1963.DefenceMedium

How much space did the Ministry of Defence free in South Block during Special Campaign 6, and to which project was it surrendered?

  1. A.About 25,000 square feet, to the National Archives
  2. B.About 35,000 square feet, to Project Yuga Yugeen Bharat Museum
  3. C.About 45,000 square feet, to the National War Memorial
  4. D.About 35,000 square feet, to the National Museum of Natural History
Show answer
Correct answer: B. About 35,000 square feet, to Project Yuga Yugeen Bharat Museum

The space was cleared through cleaning and the disposal of old records in South Block, and handed over to that museum project.

Q1964.DefenceEasy

GYANDEEP, inaugurated by the Defence Secretary in New Delhi, is which of the following?

  1. A.A Hindi library at Sena Bhawan
  2. B.A digital records portal of the armed forces
  3. C.A training academy for defence civilians
  4. D.A museum of military history
Show answer
Correct answer: A. A Hindi library at Sena Bhawan

The Defence Secretary opened it on 22 October 2026 as part of Special Campaign 6 of the Ministry of Defence, with the aim of promoting Hindi books and literature, encouraging the use of Hindi in official work and strengthening the culture of working in Hindi under the Rajbhasha policy.

Q1969.General ScienceAsked in: CDS · CDS-I 2023, GKMedium

Which one of the following is not true for anodizing process?

  1. A.It makes aluminium corrosion resistant.
  2. B.Metals like aluminium, titanium and magnesium can be anodized.
  3. C.Clean aluminium article is the anode and oxygen gas is evolved at the cathode.
  4. D.It is used in aircraft industry.
Show answer
Correct answer: C. Clean aluminium article is the anode and oxygen gas is evolved at the cathode.

In anodizing the clean aluminium article is indeed the anode, but oxygen is released at the anode, not at the cathode; hydrogen is released at the cathode.

Q1970.General ScienceAsked in: CDS · CDS-II 2016, GKMedium

Which one of the following statements is not correct?

  1. A.The response of the ear to sound of increasing intensity is approximately logarithmic.
  2. B.The sensitivity of the human ear does not vary with the frequency of the sound.
  3. C.When two or more waves traverse the same medium, the displacement of any element of the medium is the algebraic sum of the displacements due to each wave.
  4. D.Longitudinal waves can travel in all media—solids, liquids and gases.
Show answer
Correct answer: B. The sensitivity of the human ear does not vary with the frequency of the sound.

The statement that the sensitivity of the human ear does not vary with frequency is false, because the ear is far more sensitive to some frequencies than to others.

Q1971.General ScienceAsked in: CDS · CDS-I 2017, GKEasy

Kwashiorkor disease in children is caused by

  1. A.sufficient carbohydrates but less fats in diet
  2. B.sufficient carbohydrates and fats but deficient proteins in diet
  3. C.sufficient vitamins but deficient fats in diet
  4. D.sufficient fats but deficient vitamins in diet
Show answer
Correct answer: B. sufficient carbohydrates and fats but deficient proteins in diet

Kwashiorkor is a disease of protein deficiency in a child who still gets enough calories. It usually appears when a child is weaned from breast milk onto a starchy diet with little protein.

Q1972.GeographyAsked in: CDS · CDS-I 2018, GKHard

Which one of the following is applicable to collision-coalescence process of precipitation?

  1. A.Clouds which do not extend beyond the freezing level
  2. B.Clouds which extend beyond the freezing level
  3. C.All types of clouds
  4. D.Cirrocumulus cloud
Show answer
Correct answer: A. Clouds which do not extend beyond the freezing level

Collision-coalescence is the way rain forms in warm clouds, whose tops stay below the level where water freezes. In such clouds all droplets are liquid.

Q1973.Indian PolityAsked in: CDS · CDS-II 2021, GKEasy

Which one of the following is the correct meaning of the term 'State', as defined in Article 12 of the Constitution of India ?

  1. A.It refers only to the Government of India.
  2. B.It refers only to the Government of India and the Parliament of India.
  3. C.It refers only to the Government of India, Parliament of India, and Governments and Legislatures of each State.
  4. D.It refers to the Government of India, Parliament of India, Governments and Legislatures of each State, and all local or other authorities within the territory of India.
Show answer
Correct answer: D. It refers to the Government of India, Parliament of India, Governments and Legislatures of each State, and all local or other authorities within the territory of India.

Article 12 defines the State to include the Government and Parliament of India, the Government and Legislature of each State, and all local or other authorities within India or under the control of the Government of India.

Q1974.General ScienceAsked in: CDS · CDS-I 2023, GKMedium

Which one of the following is the correct order of pH for the given substances?

  1. A.Coffee < Lemon juice < Milk of magnesia < Blood
  2. B.Milk of magnesia < Blood < Coffee < Lemon juice
  3. C.Lemon juice < Blood < Coffee < Milk of magnesia
  4. D.Lemon juice < Coffee < Blood < Milk of magnesia
Show answer
Correct answer: D. Lemon juice < Coffee < Blood < Milk of magnesia

Arranged from most acidic to most basic, the four substances fall in exactly this order. Lemon juice, rich in citric acid, has a pH of about 2 to 2.5.

Q1975.GeographyAsked in: CDS · CDS-I 2024, GKEasy

Identify the type of drainage pattern on the basis of the given characteristics :

1. It represents the most common pattern of streams and their tributaries

2. It occurs in areas of uniform rock type and regular slope

3. A map, or aerial photograph, shows a pattern like the veins on a leaf— smaller streams join the main stream at an acute angle

Select the correct answer.

  1. A.Dendritic
  2. B.Radial
  3. C.Trellis
  4. D.Centripetal
Show answer
Correct answer: A. Dendritic

A pattern that looks like the branches of a tree or the veins of a leaf, formed on uniform rock with a regular slope, is dendritic.

Q1976.GeographyAsked in: CDS · CDS-II 2024, GKEasy

The Research Design and Standards Organization is the R&D wing of which one of the following organizations ?

  1. A.Bhabha Atomic Research Centre
  2. B.Indian Space Research Organization
  3. C.Indian Railways
  4. D.Defence Research and Development Organization
Show answer
Correct answer: C. Indian Railways

The Research Design and Standards Organisation (RDSO) is the sole research and development wing of the Ministry of Railways. RDSO is headquartered at Lucknow.

Q1977.Indian HistoryAsked in: CDS · CDS-I 2026, GKMedium

With reference to the Swadeshi Movement, consider the following statements :

1. The Swadeshi Movement had its genesis in the Anti-Partition movement, which was started to oppose the British decision to partition Bengal.

2. Aurobindo Ghosh was in favour of extending the movement to the rest of India and carrying it beyond the programme of just Swadeshi and Boycott to a full-fledged political mass struggle.

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 Swadeshi Movement grew out of the protest against the partition of Bengal, and the Extremists, Aurobindo Ghosh among them, wanted to turn it into a nationwide mass struggle.

Q1978.Indian EconomyAsked in: CDS · CDS-II 2026, GKEasy

India's reliance on imported energy exposes it to geopolitical supply shocks. In this context, what is the most likely short-term impact of a major disruption in crude oil imports?

  1. A.Decrease in inflation
  2. B.Strengthening of the rupee
  3. C.Higher input costs and inflation pressure
  4. D.Increase in exports
Show answer
Correct answer: C. Higher input costs and inflation pressure

When crude supply is disrupted, oil prices rise, and almost every good in India becomes costlier to make and move.

Q1979.Environment & EcologyAsked in: NDA · NDA-I 2018, GATEasy

Which one of the following group of organisms forms a food chain?

  1. A.Grass, human and fish
  2. B.Grass, goat and human
  3. C.Tree, tree cutter and tiger
  4. D.Goat, cow and human
Show answer
Correct answer: B. Grass, goat and human

In this chain each organism is eaten by the next: grass, a producer, is eaten by the goat, a herbivore, and the goat is eaten by humans, so energy passes in a straight line.