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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

Q4861.Indian PolityAsked in: CDS · CDS-II 2026, GKMedium

Which of the following statements about State Election Commissioner is/are correct? 1. Preparation of electoral rolls for elections to the Panchayats takes place under his/her direction 2. He/she is appointed by the Governor of the concerned State on the advice of the Chief Election Commissioner of India Select the 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: A. 1 only

The State Election Commission directs the preparation of electoral rolls for panchayat elections, but the State Election Commissioner is appointed by the Governor, not on the Chief Election Commissioner's advice.

Q4863.General ScienceAsked in: CDS · CDS-I 2017, GKMedium

Most viruses that infect plants possess

  1. A.single-stranded DNA
  2. B.single-stranded RNA
  3. C.double-stranded DNA and RNA
  4. D.double-stranded RNA only
Show answer
Correct answer: B. single-stranded RNA

The great majority of plant viruses carry their genes as single-stranded RNA. Viruses contain either DNA or RNA, never both, wrapped in a protein coat.

Q4864.Indian HistoryAsked in: CDS · CDS-I 2019, GKHard

The Summary Settlement of 1856 was based on which one of the following assumptions?

  1. A.The Talukdars were the rightful owners of the land.
  2. B.The Talukdars were interlopers with no permanent stakes in the land.
  3. C.The Talukdars could evict the peasants from the lands.
  4. D.The Talukdars would take a portion of the revenue which flowed to the State.
Show answer
Correct answer: B. The Talukdars were interlopers with no permanent stakes in the land.

The British settlement in Awadh treated the talukdars as intruders who had gained land by force and fraud. After Awadh was annexed in 1856, the British introduced the Summary Settlement of land revenue there.

Q4865.Important Days & DatesAsked in: CDS · CDS-II 2019, GKEasy

In India, May 21 is observed as

  1. A.NRI Day
  2. B.National Youth Day
  3. C.National Technology Day
  4. D.National Anti-Terrorism Day
Show answer
Correct answer: D. National Anti-Terrorism Day

India marks 21 May as Anti-Terrorism Day because former Prime Minister Rajiv Gandhi was assassinated on that day in 1991.

Q4866.Environment & EcologyAsked in: CDS · CDS-II 2021, GKEasy

While studying vegetation of an area, terms like 'population' and 'community' are often used. Which one of the following statements best describes a population?

  1. A.A group of organisms of one species, living in the same area at the same time.
  2. B.A group of organisms of one species living in different areas during different seasons.
  3. C.A unit consisting of biotic and abiotic components.
  4. D.A group of organisms of more than one species, living in the same area at the same time.
Show answer
Correct answer: A. A group of organisms of one species, living in the same area at the same time.

In ecology, a population is defined by three things together: one species, one place and one time. Ecology studies life in levels.

Q4871.General ScienceAsked in: CDS · CDS-I 2024, GKMedium

Photo 51 refers to an image of

  1. A.a crater on the Moon
  2. B.DNA molecules
  3. C.the virus responsible for COVID-19
  4. D.the virus responsible for common cold
Show answer
Correct answer: B. DNA molecules

Photo 51 is the X-ray diffraction photograph of DNA that revealed its helical shape. The picture was taken in May 1952 at King's College London by Rosalind Franklin and her student Raymond Gosling.

Q4873.General ScienceAsked in: CDS · CDS-II 2025, GKMedium

A sound wave travelling at a speed of 330 m/s produces 20 crests and 20 troughs in 0.1 second. The wavelength of the sound wave is:

  1. A.1.1 m
  2. B.3.3 m
  3. C.1.65 m
  4. D.2.2 m
Show answer
Correct answer: C. 1.65 m

Twenty crests and twenty troughs make twenty complete waves in 0.1 second, so the frequency is 200 Hz and the wavelength is 330 ÷ 200 = 1.65 m. One complete wave, or one cycle, contains one crest and one trough (for sound, one compression and one rarefaction).

Q4874.Indian PolityAsked in: CDS · CDS-II 2026, GKHard

Which of the following statements about Goods and Services Tax (GST) in course of inter-State trade or commerce is/are correct? 1. Levy and collection of GST are governed under Article 269A of the Constitution of India 2. GST on supplies in the course of inter-State trade or commerce may not be levied and collected by the States 3. GST is apportioned between the Union and the States Select the answer using the code given below:

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

Article 269A makes inter-State GST a tax that only the Centre levies and collects and then shares with the States.

Q4876.GeographyAsked in: UPSC CAPF · CAPF 2018, Paper IMedium

Which of the following cities experience the warm temperate Mediterranean climate? 1. Cape Town 2. Los Angeles 3. Adelaide 4. Santiago Select the correct answer using the code given below.

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

Cape Town, Los Angeles, Adelaide and Santiago all lie in the Mediterranean climate belt on the western sides of continents, roughly between 30° and 40° latitude.

Q4879.General ScienceAsked in: UPSC CAPF · CAPF 2021, Paper IMedium

Manganese is extracted by heating manganese dioxide with aluminium powder. Which one of the following statements with regard to the reaction is correct?

  1. A.The reaction is exothermic.
  2. B.The reaction is endothermic.
  3. C.Manganese is produced as a solid.
  4. D.Manganese is more reactive than aluminium.
Show answer
Correct answer: A. The reaction is exothermic.

Reducing manganese dioxide with aluminium, 3MnO₂ + 4Al → 3Mn + 2Al₂O₃, gives out a large amount of heat. This method of reducing a metal oxide with aluminium powder is called aluminothermy, or the Goldschmidt thermite process.

Q4880.General ScienceAsked in: UPSC CAPF · CAPF 2023, Paper IEasy

Which one of the following holds true for freely falling object ?

  1. A.It moves with a uniform velocity.
  2. B.It moves with a uniform speed.
  3. C.It moves with a non-uniform acceleration.
  4. D.It moves with a uniform acceleration.
Show answer
Correct answer: D. It moves with a uniform acceleration.

A freely falling object moves with a uniform acceleration, the acceleration due to gravity, g, about 9.8 m/s² near the Earth's surface.

GK Questions for sub-exams