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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

Q5041.Environment & EcologyMedium

Cryopreservation of pollen, tissue and embryos is carried out in liquid nitrogen at a temperature of about:

  1. A.Minus 20 degrees Celsius
  2. B.Minus 80 degrees Celsius
  3. C.Minus 196 degrees Celsius
  4. D.Minus 273 degrees Celsius
Show answer
Correct answer: C. Minus 196 degrees Celsius

The correct answer is C, about minus 196 degrees Celsius, the boiling point of liquid nitrogen, at which all metabolic activity in the stored material stops and the germplasm can be kept for very long periods without change.

Q5042.Environment & EcologyMedium

Seeds that cannot be dried and frozen for long-term storage in a seed bank are called:

  1. A.Orthodox seeds
  2. B.Recalcitrant seeds
  3. C.Dormant seeds
  4. D.Hybrid seeds
Show answer
Correct answer: B. Recalcitrant seeds

These seeds lose their viability when their moisture content is reduced, so they cannot be kept in the cold rooms of a seed bank; mango, jackfruit, coconut, cocoa and most tropical fruit trees are examples, and they are conserved instead in field gene banks, as tissue cultures or in cryobanks.

Q5044.Environment & EcologyHard

The National Gene Bank, one of the largest plant germplasm collections in the world, is maintained by which institution?

  1. A.National Bureau of Plant Genetic Resources, New Delhi
  2. B.Botanical Survey of India, Kolkata
  3. C.National Botanical Research Institute, Lucknow
  4. D.Indian Agricultural Research Institute, Pusa
Show answer
Correct answer: A. National Bureau of Plant Genetic Resources, New Delhi

The correct answer is A, the National Bureau of Plant Genetic Resources at New Delhi, an institute of the Indian Council of Agricultural Research, which holds the National Gene Bank where seeds of crop plants and their wild relatives are stored at low temperature for long-term conservation.

Q5046.Environment & EcologyMedium

Which is the oldest formally established zoo in India, opened in 1876?

  1. A.National Zoological Park, Delhi
  2. B.Alipore Zoological Garden, Kolkata
  3. C.Nehru Zoological Park, Hyderabad
  4. D.Arignar Anna Zoological Park, Chennai
Show answer
Correct answer: B. Alipore Zoological Garden, Kolkata

The correct answer is B, the Alipore Zoological Garden in Kolkata, opened to the public in 1876 and therefore the oldest formally established zoo in the country.

Q5047.Environment & EcologyMedium

The Central Zoo Authority was constituted under which law?

  1. A.Wild Life (Protection) Act, 1972
  2. B.Environment (Protection) Act, 1986
  3. C.Biological Diversity Act, 2002
  4. D.Forest (Conservation) Act, 1980
Show answer
Correct answer: A. Wild Life (Protection) Act, 1972

The amendment of 1991 inserted the provisions on zoos into that Act, and the Central Zoo Authority was constituted in 1992 to recognise zoos, prescribe standards for animal housing, upkeep and veterinary care and coordinate conservation breeding; a zoo without its recognition cannot operate.

Q5048.Environment & EcologyEasy

Which of the following is an example of ex-situ conservation?

  1. A.Biosphere reserve
  2. B.Wildlife sanctuary
  3. C.National park
  4. D.Botanical garden
Show answer
Correct answer: D. Botanical garden

Ex-situ conservation means keeping a species, or only its germplasm, outside its natural habitat, which is what a botanical garden, a zoo, an aquarium, a seed bank, a gene bank or a conservation breeding centre does.

Q5049.Indian PolityHard

Consider the following statements about the appointment of the Chief Justice of India and identify the correct ones.

1. The Constitution expressly provides that the senior-most judge of the Supreme Court shall be appointed Chief Justice of India.
2. The convention of appointing the senior-most judge was set aside in 1973 and again in 1977.
3. The outgoing Chief Justice of India recommends the name of his successor.

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

Statement 1 is wrong: the Constitution nowhere says that the senior-most judge must become Chief Justice of India; seniority is a convention and the Memorandum of Procedure records it, not Article 124.

Q5050.Indian PolityMedium

Under which Article can the President transfer a judge from one High Court to another?

  1. A.Article 219
  2. B.Article 221
  3. C.Article 222
  4. D.Article 224
Show answer
Correct answer: C. Article 222

The correct answer is C, Article 222, which empowers the President to transfer a judge from one High Court to any other High Court after consultation with the Chief Justice of India; by the collegium practice laid down in the Third Judges Case, the Chief Justice forms that opinion with…

Q5051.Indian PolityMedium

Which of the following is a qualification for appointment as a judge of the Supreme Court of India?

  1. A.Five years of practice as an advocate of a High Court
  2. B.Ten years of service as a judge of a High Court
  3. C.Five years as a judge of a High Court
  4. D.Completion of 45 years of age
Show answer
Correct answer: C. Five years as a judge of a High Court

Article 124(3) requires a citizen of India who either has been a judge of a High Court for at least five years, or has been an advocate of a High Court for at least ten years, or is in the opinion of the President a distinguished jurist.

Q5052.Indian PolityEasy

What is the age of retirement of a judge of a High Court, and which amendment fixed it?

  1. A.60 years, fixed by the original Constitution
  2. B.62 years, raised by the Fifteenth Amendment Act, 1963
  3. C.65 years, raised by the Fifteenth Amendment Act, 1963
  4. D.65 years, fixed by the original Constitution
Show answer
Correct answer: B. 62 years, raised by the Fifteenth Amendment Act, 1963

Article 217(1) originally fixed the retirement age of a High Court judge at 60 years, and the Fifteenth Constitutional Amendment Act of 1963 raised it to 62.

Q5053.Indian PolityHard

The Fourth Judges Case of 2015 struck down the Ninety-ninth Constitutional Amendment by what majority, and which judge dissented?

  1. A.3:2, Justice Kurian Joseph dissenting
  2. B.4:1, Justice J. Chelameswar dissenting
  3. C.5:0, with no dissent
  4. D.4:3, Justice Madan Lokur dissenting
Show answer
Correct answer: B. 4:1, Justice J. Chelameswar dissenting

A five-judge Constitution Bench held that the Ninety-ninth Amendment and the NJAC Act violated the independence of the judiciary, which is part of the basic structure, mainly because the Union Law Minister and two eminent persons would sit on a body selecting judges.

Q5054.Indian PolityHard

Who among the following was NOT a member of the National Judicial Appointments Commission as provided by Article 124A?

  1. A.The Chief Justice of India
  2. B.The Union Minister of Law and Justice
  3. C.The Attorney General of India
  4. D.Two eminent persons nominated by a committee
Show answer
Correct answer: C. The Attorney General of India

Article 124A gave the National Judicial Appointments Commission six members: the Chief Justice of India as ex officio chairperson, the two next senior-most judges of the Supreme Court, the Union Minister of Law and Justice, and two eminent persons nominated by a committee consisting of the Prime Minister, the Chief…

Q5056.Indian PolityMedium

After the Third Judges Case of 1998, the collegium that recommends appointments to the Supreme Court consists of the Chief Justice of India and how many other judges?

  1. A.Two senior-most judges
  2. B.Three senior-most judges
  3. C.Four senior-most judges
  4. D.Five senior-most judges
Show answer
Correct answer: C. Four senior-most judges

The Second Judges Case of 1993 required the Chief Justice of India to form his opinion in consultation with his two senior-most colleagues, so the first collegium had three members.

Q5057.Indian PolityMedium

In which case did the Supreme Court first hold that the word "consultation" in Article 124 does not mean "concurrence"?

  1. A.S. P. Gupta v. Union of India (1981)
  2. B.Supreme Court Advocates-on-Record Association v. Union of India (1993)
  3. C.The Third Judges Case (1998)
  4. D.Kesavananda Bharati v. State of Kerala (1973)
Show answer
Correct answer: A. S. P. Gupta v. Union of India (1981)

The Court there read "consultation" literally, holding that the Chief Justice of India's opinion was not binding on the government, which therefore kept the final say in appointments.

Q5058.Indian PolityEasy

Under which Article of the Constitution are the judges of the Supreme Court of India appointed?

  1. A.Article 122
  2. B.Article 124
  3. C.Article 127
  4. D.Article 217
Show answer
Correct answer: B. Article 124

Article 124(1) establishes the Supreme Court, and Article 124(2) provides that every judge of the Supreme Court shall be appointed by the President by warrant under his hand and seal after consultation with such judges of the Supreme Court and the High Courts as the President may deem necessary; its…

Q5059.DefenceHard

Where is the 24th National Maritime Search and Rescue Board Meeting being held?

  1. A.Paradip
  2. B.Bhubaneswar
  3. C.Visakhapatnam
  4. D.Chennai
Show answer
Correct answer: B. Bhubaneswar

The board meeting is convened by the Indian Coast Guard under the chairmanship of its Director General, Paramesh Sivamani, and takes up national preparedness for rescue at sea, the management of distress alerts and faster movement of rescue assets through technology and coordination between agencies.

Q5060.DefenceEasy

How many international observers are attending SAREX-2026, and from how many countries?

  1. A.32 observers from 30 countries
  2. B.30 observers from 32 countries
  3. C.24 observers from 20 countries
  4. D.15 observers from 12 countries
Show answer
Correct answer: A. 32 observers from 30 countries

The number of observers is slightly larger than the number of countries because some nations have sent more than one representative, and the Ministry of Defence treats this international presence as a highlight of the drill, since it points to shared rescue protocols and the ability of different navies and…