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RRB JE GK Questions 2026

Static GK makes up most of the General Awareness syllabus of RRB JE, and General Science adds a larger block of its own. CEN 04/2026 lists Indian geography, the culture and history of India including the freedom struggle, Indian Polity and Constitution, the Indian Economy and environmental issues concerning India and the world. In CBT-1 these share 15 questions with current affairs, while General Science, which the CEN defines as Physics, Chemistry and Life Sciences up to the 10th Standard CBSE syllabus, has 30 questions of its own. CBT-2 repeats the General Awareness syllabus in 15 questions and adds 15 on Physics and Chemistry, 10 on Basics of Computers and Applications and 10 on Basics of Environment and Pollution Control. This page holds GK24's topic-wise GK notes for RRB JE: Polity, History, Geography, the Economy, Art and Culture, Environment and Ecology, General Science and Computer basics. Each note is a set of short facts and tables in English and Hindi that can be revised in one sitting. Read one topic, solve its quiz and previous-year questions, and return to it a week later. With 15 General Awareness questions spread over eight areas, breadth matters more than depth, while General Science rewards thorough revision of Class 10 concepts.

RRB JE GK Questions with Answers

Q141.NationalMedium

Under the new NHAI system, the designs of critical highway structures will be independently checked mainly by:

  1. A.Empanelled IITs and reputed government technical institutions
  2. B.The Comptroller and Auditor General
  3. C.The Bureau of Indian Standards alone
  4. D.State public works departments
Show answer
Correct answer: A. Empanelled IITs and reputed government technical institutions

Under the procedure, three such institutions or firms are proposed from the authority panel and one or more is selected according to the needs of the project; the selected body examines the design on its own and submits observations and recommendations, which the contractor must act on before the authority…

Q143.NationalEasy

From which date does the NHAI policy on independent checking of bridge designs take effect?

  1. A.1 November 2026
  2. B.1 December 2026
  3. C.1 January 2027
  4. D.1 April 2027
Show answer
Correct answer: B. 1 December 2026

From that date the requirement of independent verification applies to every new highway project awarded under the Engineering, Procurement and Construction model, the Hybrid Annuity Model and the Build-Operate-Transfer model, and also to projects in which design verification or proof checking had not yet begun.

Q144.Science & TechnologyEasy

Which organisation is organising this edition of ESTIC?

  1. A.Council of Scientific and Industrial Research
  2. B.Indian Council of Medical Research
  3. C.Indian Space Research Organisation
  4. D.NITI Aayog
Show answer
Correct answer: A. Council of Scientific and Industrial Research

The correct answer is the Council of Scientific and Industrial Research, usually written as CSIR, which is organising this year edition of the conclave.

Q146.Science & TechnologyMedium

What is the theme of ESTIC 2026?

  1. A.Science for self-reliance and sustainability
  2. B.Creative minds catalyzing science and empowering technology
  3. C.Innovation for a developed India
  4. D.Research, innovation and entrepreneurship for all
Show answer
Correct answer: B. Creative minds catalyzing science and empowering technology

Professor Abhay Karandikar, Member of NITI Aayog and the Chief Guest at the curtain-raiser, called the theme apt because it speaks of the creative minds that work on scientific innovations and then turn them into technologies that serve society.

Q147.Science & TechnologyMedium

Where and when will ESTIC 2026 be held?

  1. A.Vigyan Bhawan, New Delhi, from 20 to 22 October
  2. B.Bharat Mandapam, New Delhi, from 27 to 29 October
  3. C.Technology Bhawan, New Delhi, from 27 to 29 November
  4. D.Science City, Ahmedabad, from 15 to 17 October
Show answer
Correct answer: B. Bharat Mandapam, New Delhi, from 27 to 29 October

The curtain-raiser announced that the second edition of the Emerging Science, Technology and Innovation Conclave will be held there, and that this edition is being organised by the Council of Scientific and Industrial Research.

Q148.General ScienceAsked in: NDA · NDA-II 2018, GATMedium

A stainless steel chamber contains Ar gas at a temperature T and pressure P. The total number of Ar atoms in the chamber is n. Now Ar gas in the chamber is replaced by CO₂ gas and the total number of CO₂ molecules in the chamber is n/2 at the same temperature T. The pressure in the chamber now is P'. Which one of the following relations holds true? (Both the gases behave as ideal gases)

  1. A.P' = P
  2. B.P' = 2P
  3. C.P' = P/2
  4. D.P' = P/4
Show answer
Correct answer: C. P' = P/2

For an ideal gas in a fixed volume at a fixed temperature, pressure is proportional to the number of molecules, so half the molecules give half the pressure.

Q149.General ScienceAsked in: NDA · NDA-II 2019, GATMedium

A solid disc and a solid sphere have the same mass and same radius. Which one has the higher moment of inertia about its centre of mass?

  1. A.The disc
  2. B.The sphere
  3. C.Both have the same moment of inertia
  4. D.The information provided is not sufficient to answer the question
Show answer
Correct answer: A. The disc

About an axis through the centre, a solid disc has I = ½MR² while a solid sphere has I = ⅖MR², and ½ is larger than ⅖.

Q150.General ScienceAsked in: NDA · NDA-II 2026, GATMedium

In a carrom game, a striker of mass 15 g hits a coin of mass 5 g head on and the coin moves with a speed of 0.36 m/s. If the time of contact between the striker and the coin is 3 milliseconds, then what is the average force applied by the striker on the coin?

  1. A.0.72 N
  2. B.0.60 N
  3. C.0.54 N
  4. D.0.30 N
Show answer
Correct answer: B. 0.60 N

Average force equals the change in momentum of the coin divided by the time of contact.

Q151.General ScienceAsked in: NDA · NDA-II 2026, GATHard

A biconvex lens is made of a material of refractive index 2 such that the ratio of the radii of curvature of its two faces is 1 : 2. A point source in air is placed on the principal axis of this lens at a distance u from the lens. Which one of the following is correct if the image is formed exactly at the same distance as that of the point source? (where R is the radius of curvature of the first face)

  1. A.u = R
  2. B.u = 2R
  3. C.2u = 3R
  4. D.3u = 4R
Show answer
Correct answer: D. 3u = 4R

A convex lens forms an image at the same distance as the object only when the object sits at 2f, and here 2f works out to 4R/3.

Q152.Science & TechnologyHard

Where was the CEA international conference cum exhibition on artificial intelligence in the power sector held?

  1. A.Bharat Mandapam, New Delhi
  2. B.Vigyan Bhawan, New Delhi
  3. C.Manekshaw Centre, New Delhi
  4. D.Yashobhoomi, Dwarka
Show answer
Correct answer: C. Manekshaw Centre, New Delhi

Bharat Mandapam, Vigyan Bhawan and Yashobhoomi are all genuine venues in or near the capital that host large national events, which makes them effective distractors, but none of them hosted this particular conference.

Q154.Science & TechnologyMedium

Which portal was launched by the Central Electricity Authority during the inaugural session of the conference?

  1. A.Urja Mitra Portal
  2. B.Vidhyut Dwar Portal
  3. C.PRAAPTI Portal
  4. D.Saubhagya Portal
Show answer
Correct answer: B. Vidhyut Dwar Portal

Alongside the portal, the authority released the CEA Manual on Transmission Planning Criteria, 2026, and distributed the CEA Employee Awards for outstanding performance and exceptional contribution by its staff.

Q155.Science & TechnologyEasy

What was the theme of the two-day international conference organised by the Central Electricity Authority?

  1. A.Making Indian Power Sector AI Enabled
  2. B.Clean Energy for a Viksit Bharat
  3. C.Grid of the Future: Storage and Flexibility
  4. D.Digital India for Rural Electrification
Show answer
Correct answer: A. Making Indian Power Sector AI Enabled

This was the declared theme under which the Central Electricity Authority held its international conference cum exhibition at the Manekshaw Centre in New Delhi, the first of its two days falling on 14 October 2026.

Q156.Science & TechnologyMedium

Who is the Director of NIPER Raebareli, quoted on the proposed Centre of Excellence?

  1. A.Manoj Joshi
  2. B.Dr Shubhini Saraf
  3. C.Praveen Rao Akkinepally
  4. D.Dr M L Jat
Show answer
Correct answer: B. Dr Shubhini Saraf

As Director of NIPER Raebareli she said the proposed Centre of Excellence would serve as a dedicated platform for structured training and certification in clinical research, and that bringing academic and industry expertise together would produce a model capable of being repeated in other regions and therapeutic areas.

Q157.Science & TechnologyMedium

The clinical research collaboration signed at New Delhi advances which flagship government initiative?

  1. A.Biopharma SHAKTI
  2. B.Ayushman Bharat
  3. C.Mission Indradhanush
  4. D.PRIP Scheme
Show answer
Correct answer: A. Biopharma SHAKTI

It is described as the central government's flagship initiative for building a stronger biopharma ecosystem, and among its goals is the creation of a thousand clinical trial sites across the country; the partnership between NIPER Raebareli and AstraZeneca India directly serves that objective.

Q159.Computer AwarenessMedium

In C++, members of a class declared as private can be accessed

  1. A.From anywhere in the program
  2. B.Only within the same class
  3. C.Within the class and its derived classes
  4. D.Only from the main function
Show answer
Correct answer: B. Only within the same class

Private is the most restricted access specifier and is also the default for a C++ class, so private data members can be read or changed only by the member functions of that class, and by a friend function or friend class if one is declared.