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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

Q1521.General ScienceAsked in: CDS · CDS-II 2016, GKHard

In case of a standard hydrogen electrode

  1. A.absolute electrode potential is not zero
  2. B.absolute electrode potential is zero
  3. C.both absolute and standard electrode potential values are zero
  4. D.electrode potential is zero only at 25 °C
Show answer
Correct answer: A. absolute electrode potential is not zero

The standard hydrogen electrode has a real, non-zero potential; it is only assigned the value zero by convention. The absolute potential of a single electrode cannot be measured, because any measurement needs a second electrode to complete the circuit.

Q1522.Environment & EcologyAsked in: CDS · CDS-I 2017, GKEasy

With regard to 'Project Tiger', which one of the following statements is not correct?

  1. A.It was launched in India in the year 1973.
  2. B.The objective of the Project is to preserve the habitats and tigers therein as natural heritage.
  3. C.The Project emphasized to ensure viable population of tigers in India.
  4. D.There are no Tiger Reserves in north-eastern part of India.
Show answer
Correct answer: D. There are no Tiger Reserves in north-eastern part of India.

This is false: the north-east has several tiger reserves. Manas, Kaziranga, Nameri and Orang in Assam, Namdapha, Pakke (Pakhui) and Kamlang in Arunachal Pradesh, and Dampa in Mizoram are all tiger reserves.

Q1524.GeographyAsked in: CDS · CDS-II 2019, GKEasy

What is Inter-cropping?

  1. A.It is the time period between two cropping seasons.
  2. B.It is growing of two or more crops in random mixture.
  3. C.It is growing of two or more crops in definite row patterns.
  4. D.It is growing of different crops on a piece of land in a pre-planned succession.
Show answer
Correct answer: C. It is growing of two or more crops in definite row patterns.

In inter-cropping the crops share a field at the same time but stand in planned rows. A common pattern is one row of one crop after a set number of rows of another, for example soyabean with maize, or pearl millet (bajra) with cowpea (lobia).

Q1526.Indian HistoryAsked in: CDS · CDS-I 2022, GKMedium

Who among the following belonged to Serampore Mission ?

1. William Carey

2. Joshua Marshman

3. William Ward

4. David Hare

Select the correct answer using the code given below :

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

William Carey, Joshua Marshman and William Ward, the 'Serampore Trio', ran the Baptist mission at Serampore. Carey reached Bengal in 1793, and Marshman and Ward joined him in 1799.

Q1527.General ScienceAsked in: CDS · CDS-I 2024, GKEasy

The causal organism of dengue fever is a mosquito-borne virus which belongs to which one among the following categories?

  1. A.Flavi-ribo virus
  2. B.Adenovirus
  3. C.Vaccinia virus
  4. D.Nipah virus
Show answer
Correct answer: A. Flavi-ribo virus

Dengue virus is a flavivirus, an RNA (ribonucleic acid) virus of the family Flaviviridae. Dengue is spread mainly by the bite of the female Aedes aegypti mosquito, which breeds in clean, stagnant water and bites during the day.

Q1529.GeographyAsked in: CDS · CDS-II 2025, GKHard

Consider the following statements with reference to Mid-latitude deciduous forests :

1. Mid-latitude deciduous forests consist largely of trees that drop their leaves during the summer season.

2. Mid-latitude deciduous forests are native to eastern North America and Western Europe.

3. In Asia, the Mid-latitude deciduous forests occur as a belt between the boreal forest to the north and steppe lands to the south.

4. Beech, Hickory and Walnut are common examples of trees found in Mid-latitude deciduous forests.

Which of the statements given above are correct ?

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

Only statement 1 is wrong: these trees shed their leaves in winter, not in summer. Mid-latitude (temperate) deciduous forests grow where summers are warm and moist and winters are cold.

Q1530.GeographyAsked in: CDS · CDS-I 2026, GKMedium

Which of the following pairs of theories about origin of the Earth and their propounders is/are correctly matched?

1. Gaseous Hypothesis : Kant

2. Binary Star Hypothesis : Russell

3. Planetesimal Hypothesis : Chamberlin

Select the answer using the codes given below :

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

Each theory is paired with the scientist who put it forward. Immanuel Kant proposed the Gaseous Hypothesis in 1755: a slowly rotating cloud of hot gas condensed to form the Sun and the planets.

Q1531.General ScienceAsked in: CDS · CDS-II 2026, GKEasy

Which one among the following is the primary reason for asking persons undergoing X-ray imaging to remove metallic objects?

  1. A.Metallic objects can absorb/reflect X-ray resulting in dark/bright spot
  2. B.Metallic objects can melt causing serious skin damage
  3. C.X-ray can create sparks on hitting the metallic objects
  4. D.X-ray can damage the metallic objects by altering their composition
Show answer
Correct answer: A. Metallic objects can absorb/reflect X-ray resulting in dark/bright spot

Metal blocks X-rays far more strongly than body tissue, so it spoils the picture. An X-ray image is a shadow picture.

Q1533.Indian HistoryAsked in: NDA · NDA-I 2021, GATEasy

Which of the following statements about Saguna bhakti traditions is/are correct ? 1. Saguna bhakti traditions focus on the worship of specific deities such as Vishnu or his avatars. 2. In Saguna bhakti traditions, Gods and Goddesses are conceptualised in anthropomorphic forms. 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: C. Both 1 and 2

Saguna bhakti is devotion to God with attributes, so it centres on particular deities and imagines them in human-like forms.

Q1535.GeographyAsked in: NDA · NDA-I 2022, GATEasy

In a group discussion on shape and size of the Earth, three students stated the following points : 1. Student 1 : The shape of the Earth is basically an oblate spheroid. 2. Student 2 : The polar diameter of the Earth is more than the equatorial diameter. 3. Student 3 : Bulge along the equatorial region is due to revolution of the Earth. Who among the above students is/are correct?

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

The Earth is an oblate spheroid, slightly flattened at the poles and bulging at the equator, but the bulge comes from its rotation, and its polar diameter is the shorter one.

Q1537.General ScienceAsked in: NDA · NDA-II 2023, GATMedium

What will happen if a collection of positive and negative charges are passed at a high speed through a magnetic field which is perpendicular to the direction of motion of the charges ? (Assume that both kind of charges are NOT going to recombine)

  1. A.Both kind of charges will stop moving
  2. B.Positive charges and negative charges will separate out
  3. C.Positive charges will stop but negative charges will continue moving uninterrupted
  4. D.Both kind of charges will keep moving uninterrupted
Show answer
Correct answer: B. Positive charges and negative charges will separate out

A magnetic field pushes a moving charge sideways, and the push on a negative charge is opposite to that on a positive one, so the two kinds bend away from each other.

Q1538.GeographyAsked in: NDA · NDA-I 2024, GATHard

Identify the sea-port in India on the basis of the given characteristics : 1. It is more than a century old port on the west coast of India. 2. It is a natural harbour protected by a breakwater and also by a mole. 3. A deep draft channel of about 14 metres depth permits large vessels to enter the harbour. Select the correct sea-port from the options given below :

  1. A.Mormugao Port
  2. B.Deendayal Port
  3. C.Cochin Port
  4. D.Jawaharlal Nehru Port
Show answer
Correct answer: A. Mormugao Port

Mormugao in Goa, a natural harbour at the mouth of the Zuari estuary, was opened in the late nineteenth century and is sheltered by a breakwater-cum-mole, which fits every clue.