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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

Q521.Indian PolityAsked in: NDA · NDA-II 2018, GATEasy

Article 352 of the Constitution of India contains provisions related to

  1. A.financial emergency
  2. B.failure of constitutional machinery in States
  3. C.suspension of the enforcement of rights conferred in Part III of the Constitution
  4. D.general emergency
Show answer
Correct answer: D. general emergency

Article 352 lets the President proclaim a national (general) emergency when the security of India or any part of it is threatened by war, external aggression or armed rebellion.

Q524.General ScienceAsked in: NDA · NDA-I 2020, GATEasy

Which one of the following statements regarding Bleaching powder and D.D.T. is correct ?

  1. A.Both are inorganic compounds
  2. B.Both are organic compounds
  3. C.Both contain chlorine
  4. D.Both contain calcium
Show answer
Correct answer: C. Both contain chlorine

Bleaching powder is calcium oxychloride, CaOCl₂, and DDT is dichlorodiphenyltrichloroethane; chlorine is the one element common to both. Bleaching powder is made by passing chlorine gas over dry slaked lime.

Q525.General ScienceAsked in: NDA · NDA-II 2021, GATEasy

When a light beam falls on a triangular glass prism, a band of colours is obtained. Which one of the following statements is correct in this regard?

  1. A.Red light bends the most, as the refractive index of glass for red light is greatest.
  2. B.Red light bends the most, as the refractive index of glass for red light is lowest.
  3. C.Violet light bends the most, as the refractive index of glass for violet light is greatest.
  4. D.Violet light bends the most, as the refractive index of glass for violet light is lowest.
Show answer
Correct answer: C. Violet light bends the most, as the refractive index of glass for violet light is greatest.

The more a colour is slowed by glass, the higher the refractive index for it and the more it bends.

Q526.General ScienceAsked in: NDA · NDA-II 2022, GATEasy

Which one of the following metals is most commonly used for making filament of incandescent electric bulbs?

  1. A.Aluminium
  2. B.Silver
  3. C.Copper
  4. D.Tungsten
Show answer
Correct answer: D. Tungsten

The filament of an incandescent bulb must glow white-hot without melting, and tungsten has the highest melting point of all metals, about 3,400 °C. An incandescent bulb works by the heating effect of electric current: the thin coiled filament gets so hot, around 2,500 °C or more, that it gives…

Q527.General ScienceAsked in: NDA · NDA-I 2023, GATMedium

Which one among the following is true for the speed of sound in a given medium ?

  1. A.Speed of sound remains same at all frequencies
  2. B.Speed of sound is faster at higher frequencies
  3. C.Speed of sound is slower at higher frequencies
  4. D.Speed of sound is slower at higher wavelengths
Show answer
Correct answer: A. Speed of sound remains same at all frequencies

In a given medium under the same conditions, sounds of all frequencies travel at the same speed; the speed depends on the medium, not on the pitch.

Q531.General ScienceAsked in: NDA · NDA-II 2017, GATEasy

Concave mirror is used in headlights of vehicles, because it

  1. A.focuses light from the bulb onto nearby vehicles
  2. B.sends parallel rays
  3. C.fits well into the shape of the headlight
  4. D.is cheaper than other mirrors
Show answer
Correct answer: B. sends parallel rays

The bulb of a headlight is placed at the principal focus of a concave mirror, so the reflected light leaves as a strong beam of parallel rays that reaches far down the road.

Q532.Indian PolityAsked in: NDA · NDA-I 2018, GATEasy

Which one of the following statements with regard to the Comptroller and Auditor General (CAG) of India is NOT correct ?

  1. A.He is appointed by the President of India
  2. B.He can be removed from office in the same way as the judge of the Supreme Court of India
  3. C.The CAG is eligible for further office under the Government of India after he has ceased to hold his office
  4. D.The salary of the CAG is charged upon the Consolidated Fund of India
Show answer
Correct answer: C. The CAG is eligible for further office under the Government of India after he has ceased to hold his office

This is the incorrect statement: Article 148(4) bars the CAG from any further office under the Government of India or of any State after leaving the post.

Q533.Static GKAsked in: NDA · NDA-II 2018, GATEasy

Dr. Bindeshwar Pathak, who was awarded Nikkei Asia Prize, 2018 for Culture and Community, is the founder of

  1. A.Bachpan Bachao Andolan
  2. B.PRS Legislative Research
  3. C.Sulabh Sanitation and Social Reform Movement
  4. D.Smile Foundation
Show answer
Correct answer: C. Sulabh Sanitation and Social Reform Movement

Dr. Bindeshwar Pathak founded the Sulabh movement in 1970 in Bihar to end manual scavenging and bring low-cost toilets to India.

Q536.General ScienceAsked in: NDA · NDA-I 2020, GATMedium

Which one of the following is the correct sequence of change in colours when a turmeric stain on white clothes is scrubbed by soap and then washed with water?

  1. A.Yellow - pink - blue
  2. B.Yellow - reddish brown - yellow
  3. C.Yellow - reddish brown - blue
  4. D.Yellow - blue - pink
Show answer
Correct answer: B. Yellow - reddish brown - yellow

Turmeric is a natural indicator: soap is basic and turns the yellow stain reddish brown, and rinsing with plenty of water removes the soap so the stain turns yellow again.

Q540.General ScienceAsked in: NDA · NDA-I 2023, GATMedium

In the dispersion of white light by a common glass prism, which one among the following is correct ?

  1. A.Red light deviates the most because red light has highest speed in prism
  2. B.Blue light deviates the most because blue light has highest speed in prism
  3. C.Red light deviates the most because red light has lowest speed in prism
  4. D.Blue light deviates the most because blue light has lowest speed in prism
Show answer
Correct answer: D. Blue light deviates the most because blue light has lowest speed in prism

In glass, light of shorter wavelength travels more slowly, so the glass has a higher refractive index for it and bends it more.