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CDS GK Questions 2026

Static GK carries most of the 100 marks of the CDS General Knowledge paper. Of the 120 questions in the CDS (II) 2026 paper, about 20 were on Indian Polity, about 20 on the History of India, about 15 on Geography and the environment, about 10 on the Indian Economy and about 37 on Physics, Chemistry and Biology, which makes CDS the most science-heavy General Knowledge paper among the major recruitment exams. Polity questions test writs, the NHRC, electoral systems, disqualification of legislators, GST and delimitation. History runs from the Upanishads and the Shunga dynasty to Vijayanagara, temple architecture, the Sylhet referendum and the SNDP Yogam. Geography asks about the atmosphere, earthquakes and tsunamis, Ramsar sites, mangroves and World Heritage sites. Science stays at school level but expects reasoning: a lens problem, a magnetic field direction, molarity versus molality, what cooking soda is, how enzymes act. This page holds GK24's topic-wise GK notes for CDS, written as short facts and tables so that a topic can be revised in one sitting. Read a topic, then solve its previous-year questions and quiz on this site to check what stayed with you.

CDS GK Questions with Answers

Q281.General ScienceAsked in: CDS · CDS-II 2020, GKEasy

Which one of the following is used for storing biological tissues?

  1. A.Liquid nitrogen
  2. B.Liquid helium
  3. C.Liquid argon
  4. D.Liquid bromine
Show answer
Correct answer: A. Liquid nitrogen

It is very cold, chemically inert and cheap, which makes it the standard coolant for preserving cells and tissues. Liquid nitrogen boils at about −196 °C. At such low temperatures the chemical and enzyme activity inside cells almost stops, so tissues can be kept unchanged for years.

Q283.GeographyAsked in: CDS · CDS-II 2025, GKMedium

Which of the following statements with reference to lines of latitudes is/are correct ? 1. The distance between two successive latitudes changes slightly from the equator to the poles. 2. If parallels of latitude are drawn at an interval of one degree, the total number of parallels thus drawn, including the equator, will be 179. 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: C. Both 1 and 2

The Earth is slightly flattened at the poles, and the poles themselves are points, not lines. Because the Earth is an oblate spheroid, a degree of latitude is a little shorter at the equator, about 110.6 km, than near the poles, about 111.7 km.

Q284.General ScienceAsked in: CDS · CDS-II 2026, GKMedium

Which of the following statements is/are associated with role of enzymes in genetic engineering? 1. Exonucleases remove nucleotides from the ends of DNA 2. Restriction endonucleases are used to form recombinant molecule of DNA 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: C. Both 1 and 2

Both statements describe how nucleases are used as tools of recombinant DNA technology. Nucleases are enzymes that break the phosphodiester bonds of DNA.

Q285.DefenceMedium

Sea trainees of the First Training Squadron visited which Sri Lankan institution during the Colombo port call?

  1. A.Naval and Maritime Academy, Trincomalee
  2. B.Kotelawala Defence University, Colombo
  3. C.Naval Dockyard, Galle
  4. D.Maritime Training Centre, Jaffna
Show answer
Correct answer: A. Naval and Maritime Academy, Trincomalee

Sea trainees of the squadron went to this academy and met their Sri Lankan counterparts, and cadets of the academy later came aboard the Indian ships to see the training facilities the squadron carries.

Q286.DefenceMedium

What is the full form of MAHASAGAR, the vision mentioned in connection with the Indian Navy's visit to Sri Lanka?

  1. A.Maritime Alliance for Harbour Access, Security and Growth Across Regions
  2. B.Mutual and Holistic Advancement for Security and Growth Across Regions
  3. C.Mutual Assistance for Humanitarian Aid, Security and Growth of All Regions
  4. D.Maritime Harmony and Shared Action for Growth Across Regions
Show answer
Correct answer: B. Mutual and Holistic Advancement for Security and Growth Across Regions

The visit of the First Training Squadron to Colombo and its exchanges with the Sri Lanka Navy were placed within this Indian vision for the neighbourhood, which covers regional maritime cooperation and capacity building.

Q287.DefenceEasy

Which ships make up the Indian Navy's First Training Squadron that departed Colombo on 29 October 2026?

  1. A.INS Vikrant, INS Vikramaditya and ICGS Samudra
  2. B.INS Tir, INS Sujata and ICGS Sarathi
  3. C.INS Tabar, INS Trikand and ICGS Vikram
  4. D.INS Shivalik, INS Kadmatt and ICGS Abhinav
Show answer
Correct answer: B. INS Tir, INS Sujata and ICGS Sarathi

These three ships form the First Training Squadron, shortened to 1TS, which carries sea trainees of the Indian Navy and sailed from Colombo on 29 October 2026 at the end of its port call.

Q288.General ScienceAsked in: CDS · CDS-II 2020, GKEasy

The radioactive isotope of hydrogen is

  1. A.protium
  2. B.deuterium
  3. C.tritium
  4. D.hydronium
Show answer
Correct answer: C. tritium

Tritium is the only radioactive isotope of hydrogen; its nucleus is unstable and decays by giving out beta particles. Hydrogen has three natural isotopes, all with one proton but different numbers of neutrons.

Q289.Indian EconomyAsked in: CDS · CDS-II 2021, GKMedium

Which of the following States/Union Territory/Region are in special focus in the National Mission on Edible Oils - Oil Palm ?

  1. A.Himachal Pradesh and Andaman and Nicobar Islands
  2. B.North-East Region and Andaman and Nicobar Islands
  3. C.North-East Region and Gujarat
  4. D.Uttar Pradesh and Gujarat
Show answer
Correct answer: B. North-East Region and Andaman and Nicobar Islands

The National Mission on Edible Oils - Oil Palm (NMEO-OP), approved in August 2021, gives special focus to these two areas because their high rainfall and humid climate suit oil palm.

Q290.Indian EconomyAsked in: CDS · CDS-I 2024, GKMedium

Consider the following statements about the Regional Comprehensive Economic Partnership (RCEP) : 1. It is a comprehensive free trade agreement between the ASEAN member States and ASEAN's free trade agreement partners. 2. India opted out of RCEP. 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: C. Both 1 and 2

RCEP is a free trade agreement built around ASEAN and its FTA partners, and India chose to stay out of it.

Q292.Environment & EcologyAsked in: CDS · CDS-II 2026, GKEasy

Which of the following can be considered associated with mitigation of environmental problems ?

  1. A.Biomagnification
  2. B.Accelerated eutrophication
  3. C.Release of Nuclear wastes
  4. D.Categorical disposal of different wastes
Show answer
Correct answer: D. Categorical disposal of different wastes

Sorting wastes into categories and disposing of each in the proper way reduces pollution, so it helps solve environmental problems rather than cause them.

Q293.Science & TechnologyAsked in: CDS · CDS-II 2016, GKMedium

Which one of the following statements is not correct?

  1. A.BrahMos is a supersonic cruise missile made by India and Russian Federation.
  2. B.The name BrahMos came from two rivers, Brahmaputra of India and Moskva of Russia.
  3. C.Indian military scientists were capable of integrating BrahMos cruise missile with Sukhoi-30 MKI fighter.
  4. D.Defence Research and Development Organization is the manufacturer of Sukhoi-30 MKI fighter.
Show answer
Correct answer: D. Defence Research and Development Organization is the manufacturer of Sukhoi-30 MKI fighter.

The Sukhoi-30 MKI is not made by DRDO; it was designed by Russia's Sukhoi bureau and is built in India under licence by Hindustan Aeronautics Limited (HAL) at Nashik.

Q294.Indian PolityAsked in: CDS · CDS-I 2017, GKHard

Arrange the following Commissions chronologically on the basis of their date of setting : 1. The Second Administrative Reforms Commission 2. The Eleventh Finance Commission 3. Punchhi Commission 4. Sarkaria Commission Select the correct answer using the code given below.

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

The order of setting up is Sarkaria Commission (1983), Eleventh Finance Commission (1998), Second Administrative Reforms Commission (2005) and Punchhi Commission (2007).

Q296.General ScienceAsked in: CDS · CDS-II 2020, GKMedium

Antibiotic such as penicillin blocks

  1. A.cell wall formation in bacteria
  2. B.RNA synthesis in bacteria
  3. C.DNA synthesis in bacteria
  4. D.division in bacteria
Show answer
Correct answer: A. cell wall formation in bacteria

Penicillin stops bacteria from building their peptidoglycan cell wall, so the weakened cells burst and die. Penicillin binds to and blocks the transpeptidase enzymes, also called penicillin-binding proteins, that cross-link the peptidoglycan chains of the wall.

Q300.Indian EconomyAsked in: CDS · CDS-II 2025, GKHard

Consider the following statements about the Indian Institute of Entrepreneurship (IIE) : 1. The IIE was established in 1999 in Guwahati. 2. The main aim of the institute is to provide training, research and consulting activities for small and micro enterprises. 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 Indian Institute of Entrepreneurship in Guwahati was set up in 1993, not 1999, while its stated aim is indeed training, research and consultancy for small and micro enterprises.