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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

Q3861.Static GKAsked in: CDS · CDS-I 2019, GKEasy

Paul Allen, who died in October 2018, was the co-founder of

  1. A.Oracle
  2. B.IBM
  3. C.Microsoft
  4. D.SAP
Show answer
Correct answer: C. Microsoft

Paul Allen founded Microsoft with his school friend Bill Gates in 1975. Allen and Gates started the company in Albuquerque, New Mexico, to write software for the early personal computer Altair 8800, and the name came from "microcomputer software".

Q3862.Static GKAsked in: CDS · CDS-II 2019, GKMedium

What is SWAYAM?

  1. A.Study Webs of Active-Learning for Young Aspiring Minds
  2. B.Study Webs of Active-Learning for Youth Aspiring Minds
  3. C.Study Webs of Active-Learning for Young Aspiration Minds
  4. D.Study Webs of Active-Learning for Youth of Aspiration Minds
Show answer
Correct answer: A. Study Webs of Active-Learning for Young Aspiring Minds

This is the full form of SWAYAM, the Government of India's free online course platform. SWAYAM was launched in 2017 by the Ministry of Education (then the Ministry of Human Resource Development).

Q3864.Indian PolityAsked in: CDS · CDS-II 2020, GKEasy

Which one among the following statements pertaining to the President's term of office is not correct?

  1. A.The President holds office for a term of five years.
  2. B.The President may be removed from the office by way of impeachment.
  3. C.The President may resign before the expiration of his/her term by writing to the Speaker of the Lok Sabha.
  4. D.The President shall, notwithstanding the expiration of his/her term, continue to hold office until his/her successor enters upon his/her office.
Show answer
Correct answer: C. The President may resign before the expiration of his/her term by writing to the Speaker of the Lok Sabha.

Under Article 56, the President resigns by writing to the Vice-President of India, not to the Speaker of the Lok Sabha, so this statement is not correct.

Q3866.General ScienceAsked in: CDS · CDS-II 2021, GKEasy

Rupa and Sachin observed an animal in their school garden. Rupa called it an insect while Sachin identified it as an earthworm. Which one of the following characteristics confirms that it is an insect ?

  1. A.The animal had jointed legs.
  2. B.Body of the animal had very little segmentation.
  3. C.Body of the animal was cylindrical.
  4. D.Body of the animal was bilaterally symmetrical.
Show answer
Correct answer: A. The animal had jointed legs.

Jointed legs are the mark of the phylum Arthropoda, to which insects belong; an earthworm has no legs at all.

Q3867.Environment & EcologyAsked in: CDS · CDS-I 2022, GKEasy

Which one of the following is the main reason of acid rains ?

  1. A.Dissolution of sulphur and nitrogen oxides in rain
  2. B.Dissolution of minerals in rain
  3. C.Dissolution of dust particles in rain
  4. D.Dissolution of soil solution in rain
Show answer
Correct answer: A. Dissolution of sulphur and nitrogen oxides in rain

These gases react with water in the air to form sulphuric and nitric acids, which fall as acid rain. Sulphur dioxide comes mainly from burning coal and oil in power plants and smelters, and nitrogen oxides from vehicle engines and high-temperature furnaces.

Q3868.General ScienceAsked in: CDS · CDS-II 2022, GKMedium

A metal wire of length l and diameter d has a resistance R. What would be the resistance of another wire of the same metal and of same length but having double the diameter ?

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

Resistance varies inversely with the area of cross-section, and doubling the diameter makes the area four times larger. The resistance of a wire is R = ρl/A, where ρ is the resistivity of the metal, l the length and A the cross-sectional area.

Q3870.Environment & EcologyAsked in: CDS · CDS-I 2024, GKEasy

The use of plastics has led to a number of environment-related problems. For this, which one of the following statements is correct?

  1. A.They are non-biodegradable.
  2. B.They do not get released into water and food.
  3. C.They do not have any biochemical synthesis activity.
  4. D.They are harmless to humans.
Show answer
Correct answer: A. They are non-biodegradable.

Bacteria and fungi cannot break down most plastics, so plastic waste stays in soil and water for hundreds of years.

Q3872.General ScienceAsked in: CDS · CDS-II 2025, GKEasy

Which one among the following is the correct scheme followed for classification of animals ?

  1. A.Class → Phylum → Order → Genus → Family → Species
  2. B.Phylum → Class → Family → Genus → Order → Species
  3. C.Order → Class → Phylum → Family → Species → Genus
  4. D.Phylum → Class → Order → Family → Genus → Species
Show answer
Correct answer: D. Phylum → Class → Order → Family → Genus → Species

This is the taxonomic hierarchy for animals, going from the broadest group down to the most specific. Linnaeus built this ladder of ranks, and each rank contains one or more ranks below it.

Q3873.Indian PolityAsked in: UPSC Civil Services · CSE Prelims 2025, GS Paper IHard

With reference to the Indian polity, consider the following statements : I. An Ordinance can amend any Central Act. II. An Ordinance can abridge a Fundamental Right. III. An Ordinance can come into effect from a back date. Which of the statements given above are correct?

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

An ordinance has the same force as an Act of Parliament, so it can amend a central law and can be retrospective, but like any law it cannot take away a Fundamental Right.

Q3874.Indian PolityAsked in: UPSC Civil Services · CSE Prelims 2016, GS Paper IMedium

With reference to the 'Gram Nyayalaya Act', which of the following statements is/are correct? 1. As per the Act, Gram Nyayalayas can hear only civil cases and not criminal cases. 2. The Act allows local social activists as mediators/reconciliators. 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

Gram Nyayalayas hear both civil and criminal cases, and the Act lets social workers at the village level act as conciliators.

Q3875.Indian PolityAsked in: UPSC Civil Services · CSE Prelims 2017, GS Paper IMedium

Which of the following statements is/are true of the Fundamental Duties of an Indian citizen ? 1. A legislative process has been provided to enforce these duties. 2. They are correlative to legal duties. 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: D. Neither 1 nor 2

The Fundamental Duties are moral obligations that the Constitution itself does not enforce, and they are not the legal counterpart of any right.

Q3876.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2018, GS Paper IHard

With reference to the "Global Alliance for Climate-Smart Agriculture (GACSA)", which of the following statements is/are correct? 1. GACSA is an outcome of the Climate Summit held in Paris in 2015. 2. Membership of GACSA does not create any binding obligations. 3. India was instrumental in the creation of GACSA. Select the correct answer using the code given below :

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

GACSA is a voluntary alliance whose members take on no binding obligations, but it was not born in Paris and India did not drive its creation.

Q3877.Indian HistoryAsked in: UPSC Civil Services · CSE Prelims 2021, GS Paper IMedium

Consider the following statements : 1. The Montagu-Chelmsford Reforms of 1919 recommended granting voting rights to all the women above the age of 21. 2. The Government of India Act of 1935 gave women reserved seats in legislature. 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 1919 reforms gave no such right to all women, while the 1935 Act did reserve seats for women in the legislatures.

Q3878.General ScienceAsked in: UPSC Civil Services · CSE Prelims 2022, GS Paper IMedium

Consider the following statements : 1. Biofilms can form on medical implants within human tissues. 2. Biofilms can form on food and food processing surfaces. 3. Biofilms can exhibit antibiotic resistance. Which of the statements given above are correct ?

  1. A.1 and 2 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

Biofilms form on almost any moist surface, including implants and food equipment, and they are notoriously hard to kill with antibiotics.

Q3879.Indian HistoryAsked in: UPSC Civil Services · CSE Prelims 2023, GS Paper IHard

Consider the following dynasties : 1. Hoysala 2. Gahadavala 3. Kakatiya 4. Yadava How many of the above dynasties established their kingdoms in early eighth century AD?

  1. A.Only one
  2. B.Only two
  3. C.Only three
  4. D.None
Show answer
Correct answer: D. None

All four rose much later, between the 10th and 12th centuries, mostly as feudatories who broke away from the declining Western (Kalyani) Chalukyas or the Pratiharas.

Q3880.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2017, GS Paper IMedium

According to the Wildlife (Protection) Act, 1972, which of the following animals cannot be hunted by any person except under some provisions provided by law ? 1. Gharial 2. Indian wild ass 3. Wild buffalo Select the correct answer using the code 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

All three are listed in Schedule I of the Act, so none of them can be hunted except in the narrow cases the Act itself allows.

GK Questions for sub-exams