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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

Q11921.General ScienceAsked in: CDS · 16 April 2023Medium

Naphthalene burns with a yellow sooty flame. This is because

  1. A.carbon to hydrogen ratio is low
  2. B.there is incomplete combustion
  3. C.there is excess supply of air
  4. D.of presence of impurities of nitrogen and sulfur
Show answer
Correct answer: B. there is incomplete combustion

Naphthalene is an aromatic hydrocarbon, C10H8, with a very high proportion of carbon, so the air around the flame cannot supply enough oxygen to burn all of it to carbon dioxide.

Q11924.General ScienceAsked in: CDS · 8 Nov 2020Medium

Which one of the following statements with regard to ultra violet light is NOT correct?

  1. A.It is an electromagnetic wave.
  2. B.It can travel through vacuum.
  3. C.It is a longitudinal wave.
  4. D.Its wavelength is shorter/ smaller than that of visible light.
Show answer
Correct answer: C. It is a longitudinal wave.

Ultraviolet light is a transverse wave, not a longitudinal one, so this statement is the wrong one. In an electromagnetic wave the electric and magnetic fields vibrate at right angles to each other and to the direction the wave travels, which is the definition of a transverse wave.

Q11929.Environment & EcologyAsked in: UPSC CAPF · 12 July 2015Easy

Which one among the following substances is NOT a ‘green house’ gas?

  1. A.Water vapour
  2. B.Chloroflurocarbon
  3. C.Methane
  4. D.Nitrogen
Show answer
Correct answer: D. Nitrogen

Nitrogen makes up about 78 per cent of the atmosphere, yet it is not a greenhouse gas. A molecule traps heat only if it can absorb outgoing infrared radiation, and that needs vibrations which change the spread of electric charge in the molecule.

Q11931.Indian EconomyAsked in: UPSC CAPF · 7 Aug 2022Easy

GST is a/an

  1. A.destination-based consumption tax
  2. B.origin-based production tax
  3. C.destination-based sales tax on transaction
  4. D.origin-based tax on sales transaction
Show answer
Correct answer: A. destination-based consumption tax

Goods and Services Tax is collected by the state where the goods or services are finally consumed, not by the state that produced them.

Q11933.Science & TechnologyEasy

An AI system that can perform only one specific task, such as filtering spam, is called:

  1. A.Artificial general intelligence
  2. B.Artificial narrow intelligence
  3. C.Artificial super intelligence
  4. D.Theory of mind AI
Show answer
Correct answer: B. Artificial narrow intelligence

It is trained for a single defined task and cannot transfer that skill to another; every system working today, from spam filters and voice assistants to chess engines and face recognition, is narrow AI.

Q11934.Science & TechnologyMedium

In the name of the GPT family of language models, GPT stands for:

  1. A.General Processing Technology
  2. B.Generative Pre-trained Transformer
  3. C.Graphical Pattern Trainer
  4. D.Global Predictive Tool
Show answer
Correct answer: B. Generative Pre-trained Transformer

Each word carries meaning: generative, because the model produces new text rather than only sorting what it is shown; pre-trained, because it first learns general language from a very large body of text before being adapted to particular tasks; and transformer, the neural network architecture, built on an attention mechanism…

Q11935.Science & TechnologyMedium

India’s National Strategy for Artificial Intelligence, with the slogan “AI for All”, was released by which body?

  1. A.Ministry of Electronics and Information Technology
  2. B.NITI Aayog
  3. C.Reserve Bank of India
  4. D.University Grants Commission
Show answer
Correct answer: B. NITI Aayog

The correct answer is B, NITI Aayog, which published the National Strategy for Artificial Intelligence in June 2018 under the slogan AI for All, and identified five priority sectors: healthcare, agriculture, education, smart cities and infrastructure, and smart mobility and transportation.

Q11936.Science & TechnologyEasy

Which computer program defeated the Go champion Lee Sedol in 2016?

  1. A.Deep Blue
  2. B.Watson
  3. C.AlphaGo
  4. D.ELIZA
Show answer
Correct answer: C. AlphaGo

The correct answer is C, AlphaGo, built by DeepMind, which beat the South Korean Go champion Lee Sedol in a five-game match in 2016; the victory mattered because Go has far more possible positions than chess, so brute-force search alone cannot win and the program relied on deep neural networks…

Q11937.Science & TechnologyHard

The IndiaAI Mission is implemented by which body?

  1. A.NITI Aayog
  2. B.IndiaAI Independent Business Division under Digital India Corporation
  3. C.Defence Research and Development Organisation
  4. D.Indian Space Research Organisation
Show answer
Correct answer: B. IndiaAI Independent Business Division under Digital India Corporation

The Cabinet decision of 7 March 2024 named this division as the implementing agency for all seven components of the mission.

Q11939.Science & TechnologyMedium

The IndiaAI Mission was approved by the Union Cabinet with a budget outlay of about:

  1. A.Rs 10,372 crore
  2. B.Rs 76,000 crore
  3. C.Rs 1,500 crore
  4. D.Rs 25,000 crore
Show answer
Correct answer: A. Rs 10,372 crore

The Union Cabinet approved the IndiaAI Mission on 7 March 2024 with an outlay of 10,371.92 crore rupees, to be spent across its seven components, and the mission is run by the IndiaAI Independent Business Division under the Digital India Corporation in the Ministry of Electronics and Information Technology.

Q11940.Science & TechnologyEasy

Which type of machine learning is trained on labelled data?

  1. A.Unsupervised learning
  2. B.Reinforcement learning
  3. C.Supervised learning
  4. D.Transfer learning
Show answer
Correct answer: C. Supervised learning

Here every training example carries the right answer, its label, and the model learns the mapping from input to label, which is how spam filters, handwriting readers and credit-scoring models are built.

GK Questions for sub-exams