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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

Q1926.General ScienceAsked in: CDS · CDS-I 2023, GKMedium

Which of the following statements are true for the reaction of Fe2O3 with aluminium? 1. It is known as the 'thermite reaction'. 2. The heat evolved is used for welding purpose. 3. Aluminium metal acts as an oxidizing agent. 4. Molten Fe and Al are formed at the end of the reaction. Select the correct answer using the code given below.

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

When iron(III) oxide is heated with aluminium powder, aluminium takes away the oxygen, and the reaction gives out so much heat that the iron produced is molten: Fe2O3 + 2Al → 2Fe + Al2O3 + heat.

Q1927.Indian HistoryAsked in: CDS · CDS-II 2024, GKMedium

The distribution of charkhas on a wide scale among the people was decided by :

  1. A.Congress Working Committee in 1919
  2. B.All India Congress Committee in 1921
  3. C.Mahatma Gandhi at the start of Dandi March
  4. D.All India Congress Committee in 1947
Show answer
Correct answer: B. All India Congress Committee in 1921

At its meeting at Bezwada (Vijayawada) in March 1921, the AICC set three targets to carry the Non-Cooperation Movement forward: one crore members for the Congress, one crore rupees for the Tilak Swaraj Fund, and twenty lakh charkhas to be distributed among the people by 30 June 1921.

Q1928.Books & AuthorsAsked in: CDS · CDS-I 2025, GKHard

In which one of the following works has Amir Khusrau praised the climate of India, its languages, notably Sanskrit, its arts and music and even its animals?

  1. A.Ijaz-i Khusrawi
  2. B.Dewal Rani Khizr Khani
  3. C.Khazainul Futuh
  4. D.Nuh Sipihr
Show answer
Correct answer: D. Nuh Sipihr

In this poem Amir Khusrau sets out to show that India is superior to other lands, praising its climate, its languages, its arts and music, and even its animals.

Q1930.General ScienceAsked in: NDA · NDA-I 2018, GATMedium

If by an unknown accident the acid secreting cells of the stomach wall of an individual are damaged, digestion of which one of the following biomolecule will be affected to a greater extent?

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

The acid-secreting cells of the stomach, called oxyntic or parietal cells, release hydrochloric acid, which protein digestion in the stomach depends on.

Q1931.Indian HistoryAsked in: NDA · NDA-I 2019, GATMedium

Statement I: The British ruled India through a modern bureaucracy headed by the Indian Civil Service, whose members were recruited through merit based on open competition Statement II: The Indian Civil Service was based on the whole hearted participation of Indians

  1. A.Both the statements are individually true and Statement II is the correct explanation of Statement I
  2. B.Both the statements are individually true but Statement II is not the correct explanation of Statement I
  3. C.Statement I is true but Statement II is false
  4. D.Statement I is false but Statement II is true
Show answer
Correct answer: C. Statement I is true but Statement II is false

The Indian Civil Service was a modern, merit-based bureaucracy filled through open competitive examinations from 1853, but Indians were kept out of it in practice for decades.

Q1932.General ScienceAsked in: NDA · NDA-II 2019, GATHard

A rigid body of mass 2 kg is dropped from a stationary balloon kept at a height of 50 m from the ground. The speed of the body when it just touches the ground and the total energy when it is dropped from the balloon are respectively (acceleration due to gravity = 9.8 m/s²)

  1. A.980 m s⁻¹ and 980 J
  2. B.√980 m s⁻¹ and √980 J
  3. C.980 m s⁻¹ and √980 J
  4. D.√980 m s⁻¹ and 980 J
Show answer
Correct answer: D. √980 m s⁻¹ and 980 J

The body falls freely from rest through 50 m, so v² = 2gh = 2 × 9.8 × 50 = 980, giving v = √980, about 31.3 m s⁻¹; its total energy at release is all potential energy, mgh = 2 × 9.8 × 50 = 980 J. Because the…

Q1933.General ScienceAsked in: NDA · NDA-I 2020, GATEasy

Atomic mass of an element is equal to the sum of number of

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

Almost all the mass of an atom is in its nucleus, so the mass number, which the question calls atomic mass, is the total of protons and neutrons, the two kinds of nucleons.

Q1934.General ScienceAsked in: NDA · NDA-I 2021, GATMedium

Which one of the following statements is true for a simple harmonic oscillator?

  1. A.Force acting is directly proportional to the displacement from the mean position and is in same direction.
  2. B.Force acting is directly proportional to the displacement from the mean position and is in opposite direction.
  3. C.Acceleration of the oscillator is constant.
  4. D.The velocity of the oscillator is not periodic.
Show answer
Correct answer: B. Force acting is directly proportional to the displacement from the mean position and is in opposite direction.

This is the defining condition of simple harmonic motion, written F = −kx, where k is the force constant and the minus sign shows that the force always points back towards the mean position.

Q1937.Indian HistoryAsked in: NDA · NDA-II 2023, GATHard

Chandimangala, a sixteenth century text, was composed by

  1. A.Hema Saraswati
  2. B.Madhav Kandali
  3. C.Tukaram
  4. D.Mukundaram Chakrabarti
Show answer
Correct answer: D. Mukundaram Chakrabarti

The Bengali poet Mukundaram Chakrabarti, honoured with the title Kavikankan, composed the Chandimangala in the sixteenth century. Mangalkavyas are long Bengali narrative poems in praise of a deity, and the Chandimangala celebrates the goddess Chandi.

Q1939.Indian HistoryAsked in: NDA · NDA-II 2024, GATMedium

Inspired by the Dandi March by Mahatma Gandhi, in Tamilnadu, C. Rajagopalachari led a salt march from

  1. A.Tirunelveli to Nagercoil
  2. B.Kanchipuram to Mahabalipuram
  3. C.Trichinopoly to Vedaranniyam on Tanjore coast
  4. D.Chennai to Vellore
Show answer
Correct answer: C. Trichinopoly to Vedaranniyam on Tanjore coast

In April 1930, C. Rajagopalachari led a band of volunteers from Tiruchirappalli, then called Trichinopoly, to Vedaranyam on the Tanjore coast, where they broke the salt law.

Q1940.General ScienceAsked in: NDA · NDA-II 2025, GATMedium

Which one of the following statements is NOT correct?

  1. A.Water of crystallization is the fixed number of water molecules present in one formula unit of a salt
  2. B.The molecular formula of Plaster of Paris is CaSO4·2H2O
  3. C.Washing soda is used for removing the permanent hardness of water
  4. D.The atmosphere of Venus is made up of thick white and yellow clouds of sulphuric acid
Show answer
Correct answer: B. The molecular formula of Plaster of Paris is CaSO4·2H2O

The statement is false because CaSO4·2H2O is gypsum; Plaster of Paris is calcium sulphate hemihydrate, CaSO4·½H2O. When gypsum is heated to about 373 K, it loses three-quarters of its water and becomes Plaster of Paris, a white powder.