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Railway GK Questions 2026

Static GK in railway exams starts with one shared block: Class 10 science. Every RRB exam on GK24 tests it. Group D has 25 questions on Physics, Chemistry and Life Sciences of 10th CBSE level. JE has 30 in CBT-1 and another 15 on Physics and Chemistry in CBT-2. ALP tests General Science in CBT-1 and Basic Science and Engineering in CBT-2, and NTPC lists general science up to 10th inside General Awareness. Beyond science, the lists differ. NTPC names history and the freedom struggle, geography, polity, the economy, art and culture, environment, computers, abbreviations, transport systems in India, world organisations and government bodies. JE names geography, history and culture, polity, the economy and environmental issues, and adds computers and pollution control in CBT-2. This page holds GK24's topic-wise GK notes for railway exams in English and Hindi: General Science, History, Geography, Polity, Economy, Art and Culture, Environment, Computers and static GK, including Indian Railways. Each note is short facts and tables that can be revised in one sitting. Begin with the science notes, since they serve every railway exam, then add the static topics your exam lists, and test each note with its quiz.

Railway GK Questions with Answers

Q5121.Science & TechnologyHard

Which of these climate events was identified among the four major phases in the study?

  1. A.The Little Ice Age
  2. B.The Carboniferous glaciation
  3. C.The Cretaceous thermal maximum
  4. D.The Permian extinction
Show answer
Correct answer: A. The Little Ice Age

The researchers identified four major environmental phases in the lake record, associated with key climate events that include the arid event of about four point two thousand years ago, the Roman Warm Period and the Little Ice Age.

Q5123.Science & TechnologyMedium

Which institute reconstructed 4,600 years of monsoon and environmental history from Karela Lake?

  1. A.Wadia Institute of Himalayan Geology
  2. B.Birbal Sahni Institute of Palaeosciences
  3. C.National Institute of Oceanography
  4. D.Indian Institute of Tropical Meteorology
Show answer
Correct answer: B. Birbal Sahni Institute of Palaeosciences

Its scientists traced past environmental conditions at Karela Lake using stable isotopes, vegetation changes and archaeological and sedimentary records, and built a record stretching back about four thousand six hundred years.

Q5124.Summits & ConferencesHard

Which of the following Himachal Pradesh initiatives was showcased on day one of the conference?

  1. A.Him Parivar
  2. B.Jal Jeevan Mission
  3. C.Atal Innovation Mission
  4. D.Smart Cities Mission
Show answer
Correct answer: A. Him Parivar

Day one of the conference put five initiatives of the Himachal Pradesh government on display, namely Him Parivar, Sukhashraya, the Vidya Samiksha Kendra, Green Himachal and the Rajiv Gandhi Van Samvardhan Yojna, together covering health, social justice, education, environment and forest conservation.

Q5125.Summits & ConferencesMedium

Which department organised the National Conference on e-Governance Reforms?

  1. A.Department of Administrative Reforms and Public Grievances
  2. B.Department of Telecommunications
  3. C.Department of Science and Technology
  4. D.Department of Expenditure
Show answer
Correct answer: A. Department of Administrative Reforms and Public Grievances

Its Secretary delivered the welcome address and spoke of nominations received for the National Awards for e-Governance and the Prime Minister's Awards as evidence of innovation at the level of districts, States and ministries.

Q5128.Government SchemesEasy

Which ministry implements the Pradhan Mantri Anusuchit Jaati Abhyuday Yojana?

  1. A.Ministry of Rural Development
  2. B.Ministry of Tribal Affairs
  3. C.Ministry of Social Justice and Empowerment
  4. D.Ministry of Panchayati Raj
Show answer
Correct answer: C. Ministry of Social Justice and Empowerment

PM-AJAY is run by this ministry and aims at the socio-economic and educational empowerment of Scheduled Caste communities through village infrastructure, livelihood promotion, education and better access to basic services.

Q5130.DefenceMedium

Which facility, set up with Indian assistance, did the Indian delegation review at Mongolia's National Defence University?

  1. A.A satellite tracking station
  2. B.A Cyber Security Training Centre
  3. C.A naval dockyard
  4. D.A missile testing range
Show answer
Correct answer: B. A Cyber Security Training Centre

During the visit tied to the Joint Working Group meeting, the Indian delegation went to Mongolia's National Defence University and examined how the Cyber Security Training Centre, established there with Indian assistance, is functioning.

Q5131.DefenceMedium

Which joint military exercise of India and Mongolia was welcomed at the 14th Joint Working Group meeting?

  1. A.Exercise Nomadic Elephant
  2. B.Exercise Mitra Shakti
  3. C.Exercise Surya Kiran
  4. D.Exercise Garuda Shakti
Show answer
Correct answer: A. Exercise Nomadic Elephant

At the fourteenth Joint Working Group meeting in Ulaanbaatar, both delegations appreciated the successful conclusion of this exercise and treated it as evidence of how firmly the two armies have built their cooperation.

Q5133.General ScienceAsked in: CDS · CDS-I 2020, GKEasy

If x is the temperature of a system in Kelvin and y is the temperature of the system in °C, then the correct relation between them is

  1. A.x = 273 - y
  2. B.x = 273 + y
  3. C.x = 173 + y
  4. D.x = 173 - y
Show answer
Correct answer: B. x = 273 + y

A temperature in kelvin is the Celsius temperature plus 273 (more exactly 273.15). The Kelvin and Celsius scales have degrees of the same size, so a change of 1 °C equals a change of 1 K; only their zero points differ.

Q5134.General ScienceAsked in: CDS · CDS-II 2021, GKMedium

Fertilizers are used to obtain higher yields of crops. However, all nutrients are usually not available in fertilizers. Which one of the following nutrients is usually not available in fertilizers ?

  1. A.Iron
  2. B.Potassium
  3. C.Nitrogen
  4. D.Phosphorus
Show answer
Correct answer: A. Iron

Common fertilisers supply nitrogen, phosphorus and potassium (NPK); iron is a micronutrient that is usually not part of them. Plants need nitrogen, phosphorus and potassium in large amounts, so these are called primary macronutrients, and fertilisers such as urea, DAP, MOP and NPK mixtures are made to supply them.

Q5135.General ScienceAsked in: CDS · CDS-I 2022, GKEasy

Which one of the following living organisms gives litmus ?

  1. A.Protozoa
  2. B.Virus
  3. C.Lichen
  4. D.Saccharomyces
Show answer
Correct answer: C. Lichen

Litmus is a natural dye extracted from certain lichens, especially species of Roccella. A lichen is a partnership between a fungus and an alga (or a cyanobacterium): the alga makes food by photosynthesis, while the fungus gives shelter and absorbs water and minerals.

Q5137.Environment & EcologyAsked in: CDS · CDS-II 2024, GKEasy

Ozone hole is a region over :

  1. A.the Antarctic caused mainly by CFC gases.
  2. B.the Antarctic caused mainly by carbon dioxide gas.
  3. C.the Arctic caused mainly by CFC gases.
  4. D.the Arctic caused mainly by carbon dioxide gas.
Show answer
Correct answer: A. the Antarctic caused mainly by CFC gases.

The ozone hole is a sharp seasonal thinning of the stratospheric ozone layer over Antarctica, caused mainly by chlorine from chlorofluorocarbons.

Q5138.General ScienceAsked in: CDS · CDS-I 2025, GKEasy

The rule that determines the direction of a magnetic field produced around a straight conductor carrying current is :

  1. A.Right-hand thumb rule
  2. B.Fleming's left-hand rule
  3. C.Fleming's right-hand rule
  4. D.Hund's rule
Show answer
Correct answer: A. Right-hand thumb rule

If you hold a current-carrying straight wire in your right hand with the thumb pointing along the current, your curled fingers show the direction of the magnetic field lines around it.

Q5139.General ScienceAsked in: CDS · CDS-II 2025, GKEasy

The chemical reaction K2SO4 (aq.) + BaCl2 (aq.) → 2KCl (aq.) + BaSO4 (solid) is an example of :

  1. A.Addition reaction
  2. B.Displacement reaction
  3. C.Decomposition reaction
  4. D.Double displacement reaction
Show answer
Correct answer: D. Double displacement reaction

Potassium and barium exchange their partner ions: K₂SO₄ and BaCl₂ swap ions to give KCl and BaSO₄. In a double displacement reaction two compounds exchange ions.

Q5140.General ScienceAsked in: CDS · CDS-I 2026, GKMedium

Consider the following statements : 1. Packaged foods are purged with nitrogen gas in order to prevent their oxidation. 2. Tooth decay starts when pH of the mouth is lower than 5.5. 3. The reactivity of metals decreases in the order : Mg > Fe > Zn. Which of the statements given above is/are not correct ?

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

Statements 1 and 2 are correct; statement 3 is wrong because zinc is more reactive than iron.

GK Questions for sub-exams