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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

Q4601.NationalEasy

Which agency carried out Operation Deep Manifest against the smuggling of Pakistan-origin rock salt?

  1. A.Central Bureau of Investigation
  2. B.Directorate of Revenue Intelligence
  3. C.Enforcement Directorate
  4. D.Narcotics Control Bureau
Show answer
Correct answer: B. Directorate of Revenue Intelligence

DRI ran Operation Deep Manifest and detected 295 containers carrying 7,311 metric tonnes of Pakistan-origin industrial or Himalayan rock salt, worth roughly Rs 30 crore, that had been brought into the country in breach of the import ban.

Q4602.General ScienceAsked in: CDS · CDS-I 2017, GKEasy

Syngamy results in formation of

  1. A.haploid zygote
  2. B.diploid zygote
  3. C.non-motile male gametes
  4. D.motile male gametes
Show answer
Correct answer: B. diploid zygote

Syngamy is the fusion of a male and a female gamete, and since each gamete is haploid, their union gives a diploid zygote.

Q4605.General ScienceAsked in: CDS · CDS-II 2018, GKEasy

Which of the following is the general formula for saturated hydrocarbons?

  1. A.CₙH₂ₙ₊₂
  2. B.CₙH₂ₙ₋₂
  3. C.CₙH₂ₙ₊₁
  4. D.CₙH₂ₙ₋₁
Show answer
Correct answer: A. CₙH₂ₙ₊₂

Saturated open-chain hydrocarbons are the alkanes, and every alkane fits the formula CₙH₂ₙ₊₂. In a saturated hydrocarbon every carbon atom is joined to others only by single bonds, so each carbon holds the largest possible number of hydrogen atoms.

Q4606.Indian PolityAsked in: CDS · CDS-II 2019, GKMedium

Which law prescribes that all proceedings in the Supreme Court shall be in English language ?

  1. A.Article 145 of the Constitution of India
  2. B.Article 348 of the Constitution of India
  3. C.The Supreme Court Rules, 1966
  4. D.An Act passed by the Parliament
Show answer
Correct answer: B. Article 348 of the Constitution of India

Article 348(1)(a) says that, until Parliament by law provides otherwise, all proceedings in the Supreme Court and in every High Court shall be in the English language.

Q4609.General ScienceAsked in: CDS · CDS-I 2020, GKMedium

Which one of the following is not an epidemic disease?

  1. A.Cholera
  2. B.Malaria
  3. C.Smallpox
  4. D.Elephantiasis
Show answer
Correct answer: D. Elephantiasis

Elephantiasis, or lymphatic filariasis, is an endemic disease: it stays steadily present in certain regions and develops slowly over years, rather than breaking out suddenly in a large number of people.

Q4611.General ScienceAsked in: CDS · CDS-I 2020, GKEasy

The unit of the force constant k of a spring is

  1. A.N-m
  2. B.N/m
  3. C.N-m²
  4. D.N/m²
Show answer
Correct answer: B. N/m

The spring constant is force divided by extension, so its SI unit is newton per metre. Hooke's law says that, within the elastic limit, the restoring force of a spring is proportional to how far it is stretched or compressed: F = −kx.

Q4613.Indian EconomyAsked in: CDS · CDS-I 2021, GKEasy

Mission Indradhanush aims at

  1. A.reducing child deaths due to pneumonia.
  2. B.reducing the impact of rotavirus.
  3. C.elimination of maternal tetanus.
  4. D.full immunisation of children.
Show answer
Correct answer: D. full immunisation of children.

Mission Indradhanush was launched in December 2014 to bring every child under two years and every pregnant woman under full immunisation against vaccine-preventable diseases.

Q4615.Indian EconomyAsked in: CDS · CDS-I 2021, GKEasy

The Saubhagya Scheme aims at universal

  1. A.LPG connection.
  2. B.household electrification.
  3. C.primary school education.
  4. D.public health insurance.
Show answer
Correct answer: B. household electrification.

Saubhagya, the Pradhan Mantri Sahaj Bijli Har Ghar Yojana, was launched to give an electricity connection to every household in the country.

Q4616.General ScienceAsked in: CDS · CDS-II 2021, GKMedium

In which of the following groups of organisms, is food material broken down outside the body and absorbed?

  1. A.Yeast, mushroom, bread mould
  2. B.Mushroom, Amoeba, green plants
  3. C.Cuscuta, tapeworm, lice
  4. D.Paramecium, Amoeba, Cuscuta
Show answer
Correct answer: A. Yeast, mushroom, bread mould

All three are fungi that feed saprophytically: they release enzymes onto dead organic matter, digest it outside their bodies and then absorb the dissolved food.

Q4617.General ScienceAsked in: CDS · CDS-I 2022, GKEasy

Suppose, due to an accident, the delicate lining of the mouth and the oesophagus of a person is injured. In this case, which one of the following tissues will be affected?

  1. A.Smooth muscle
  2. B.Cuboidal epithelium
  3. C.Squamous epithelium
  4. D.Striated muscle
Show answer
Correct answer: C. Squamous epithelium

The inner lining of the mouth and the oesophagus is made of squamous epithelium, so an injury to that lining damages this tissue.

Q4618.General ScienceAsked in: CDS · CDS-II 2022, GKEasy

Which one of the following statements about starch and glycogen is correct ?

  1. A.Both starch and glycogen are found in plant cells.
  2. B.Both starch and glycogen are found in animal cells.
  3. C.Starch is present in plant cells and glycogen is present in animal cells.
  4. D.Both starch and glycogen are present in plant cells as well as animal cells.
Show answer
Correct answer: C. Starch is present in plant cells and glycogen is present in animal cells.

Both are stored forms of glucose, but plants store it as starch and animals as glycogen. Starch and glycogen are polysaccharides, long chains of glucose units.

Q4619.General ScienceAsked in: CDS · CDS-I 2022, GKEasy

Which one of the following statements is not correct with regard to genetically modified organisms?

  1. A.In this technique a gene from one organism is isolated and transferred to the cell of another organism.
  2. B.This technique has applications only in plants.
  3. C.Genes for insect resistance may spread from crop plants to wild plants.
  4. D.To produce a transgenic animal the novel genes are inserted at a very early stage of development.
Show answer
Correct answer: B. This technique has applications only in plants.

Genetic modification is used in plants, animals and microbes alike, so this statement is false. A genetically modified organism is one whose DNA has been changed, usually by taking a useful gene from one organism and putting it into another.

Q4620.General ScienceAsked in: CDS · CDS-II 2022, GKMedium

Cl⁻ is not isoelectronic with

  1. A.K⁺
  2. B.Mg²⁺
  3. C.S²⁻
  4. D.P³⁻
Show answer
Correct answer: B. Mg²⁺

The chloride ion has 18 electrons, while the magnesium ion has only 10, so the two are not isoelectronic. Isoelectronic species have the same number of electrons.

GK Questions for sub-exams