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SSC CHSL GK Questions 2026

Static GK decides the General Awareness score in SSC CHSL. Of the 25 questions in Tier-I and the 20 in Tier-II, most come from Indian Polity, History, Geography, the Economy and General Science, the areas the CHSL 2026 notice lists as History, Culture, Geography, Economic Scene, General Policy and Scientific Research relating to India and its neighbouring countries. The level is that of Class 12, so the questions are direct: which article, which river, which ruler, which year. Polity asks about parts and schedules of the Constitution, fundamental rights, the President, Parliament, the Supreme Court and constitutional bodies. History covers the Indus Valley, the Mauryas and Guptas, the Sultanate and Mughal periods, and the freedom struggle from 1857 to 1947. Geography asks about rivers, soils, climate, national parks, minerals and world physical features. The Economy part asks about budget terms, the RBI, banking and basic concepts. General Science is school-level Physics, Chemistry and Biology with everyday applications, and Culture covers dances, festivals, monuments and books. This page holds GK24's topic-wise GK notes for SSC CHSL, written as short facts and tables so 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 you retained.

SSC CHSL GK Questions with Answers

Q8761.General ScienceAsked in: Bihar · BPSC AE Paper 3 (General Studies) 2019 OEasy

LPG (Liquified Petroleum Gas) is a mixture of

  1. A.methane and propane
  2. B.ethane and propane
  3. C.butane and propane
  4. D.propane and hexane
Show answer
Correct answer: C. butane and propane

The LPG supplied in household cylinders is mainly a mixture of butane and propane, two gases that turn liquid under moderate pressure.

Q8765.Science & TechnologyEasy

Digital Bharat Nidhi was earlier known by which name?

  1. A.National Broadband Mission Fund
  2. B.Universal Service Obligation Fund
  3. C.Telecom Development Fund
  4. D.Digital India Infrastructure Fund
Show answer
Correct answer: B. Universal Service Obligation Fund

The fund was created under the Indian Telegraph (Amendment) Act, 2003, and the Telecommunications Act, 2023 renamed it Digital Bharat Nidhi.

Q8767.Science & TechnologyMedium

How much financial support has the Centre approved for the Amended BharatNet Programme in Maharashtra?

  1. A.Rs 5,240 crore
  2. B.Rs 8,375 crore
  3. C.Rs 10,520 crore
  4. D.Rs 14,600 crore
Show answer
Correct answer: C. Rs 10,520 crore

That is the financial support the Government of India has approved for running the Amended BharatNet Programme in Maharashtra under the state-led model, and the agreement signed at Sanchar Bhawan puts it into effect through MahaNet Digital Infrastructure Limited.

Q8768.General ScienceAsked in: RRB Group D · 27 Nov, 2025, Shift 1Medium

Which of the following is NOT used for expressing the concentration of a solution?

  1. A.Volume by volume percentage of a solution
  2. B.Mass by volume percentage of a solution
  3. C.Volume by mass percentage of a solution
  4. D.Mass by mass percentage of a solution
Show answer
Correct answer: C. Volume by mass percentage of a solution

Concentration tells how much solute is present in a given amount of solution, and the three standard percentage forms are mass by mass, mass by volume and volume by volume; volume by mass is not one of them.

Q8770.General ScienceAsked in: RRB Group D · 4 Dec 2018, Shift 2Easy

What is the expected molecular mass of sulfur dioxide [SO2]?

  1. A.6.4 u
  2. B.65 u
  3. C.64 u
  4. D.6.5 u
Show answer
Correct answer: C. 64 u

Sulfur dioxide is made of one sulfur atom and two oxygen atoms, so its molecular mass is the sum of their atomic masses: 32 plus 2 multiplied by 16, that is 32 plus 32, which gives 64 u. Molecular mass is expressed in unified atomic mass units, written u, and…

Q8771.General ScienceAsked in: RRB Group D · 15 Oct 2018, Shift 2Medium

The formula unit mass of CaCl2 is:

  1. A.105 u
  2. B.111 u
  3. C.121 u
  4. D.100 u
Show answer
Correct answer: B. 111 u

Calcium chloride is an ionic compound, so it has a formula unit mass rather than a molecular mass, and the value is found by adding the atomic masses of all the atoms in the formula.

Q8772.General ScienceAsked in: RRB Group D · 17 Aug 2022, Shift 1Medium

Which of the following statements is INCORRECT? a) Methanoic acid is secreted by Nettle plant leaves. b) Acetic acid is found in vinegar. c) Tooth decay starts when mouth pH is lower than 5.5. d) Bacteria present in the mouth produce base by degradation of the remaining food particles present in the mouth.

  1. A.a
  2. B.b
  3. C.c
  4. D.d
Show answer
Correct answer: D. d

Bacteria in the mouth break down leftover food particles and produce acid, not base, so statement d is the incorrect one.

Q8773.General ScienceAsked in: RRB Group D · 30 Sept 2022, Shift 3Easy

Which of the following statements is correct about litmus solution?

  1. A.Litmus solution is a purple dye, which is extracted from moss.
  2. B.Litmus solution is an orange dye, which is extracted from lichen.
  3. C.Litmus solution is a purple dye, which is extracted from lichen.
  4. D.Litmus solution is an orange dye, which is extracted from moss.
Show answer
Correct answer: C. Litmus solution is a purple dye, which is extracted from lichen.

Litmus is a natural indicator obtained from lichens, which are a partnership between an alga and a fungus, and in a neutral solution it shows a purple colour.

Q8775.General ScienceAsked in: RRB Group D · 2 Sept 2022, Shift 1Easy

What is the formula of cyclohexane?

  1. A.C6H12
  2. B.C6H14
  3. C.C6H6
  4. D.C6H10
Show answer
Correct answer: A. C6H12

Cyclohexane is a closed ring of six carbon atoms joined by single bonds, and each carbon carries two hydrogen atoms, which gives C6H12.

Q8777.General ScienceAsked in: RRB Group D · 17 Dec, 2025, Shift 3Easy

Which of the following belongs to the alkyne group?

  1. A.C3H4
  2. B.C2H4
  3. C.C3H8
  4. D.C6H6
Show answer
Correct answer: A. C3H4

C3H4 is propyne, and it fits the alkyne general formula CnH2n-2 when n equals 3. Alkynes are unsaturated hydrocarbons that carry at least one carbon-to-carbon triple bond, and the first member of the family is ethyne, C2H2, better known as acetylene and burnt with oxygen in welding torches.

Q8779.General ScienceAsked in: RRB Group D · 10 Oct 2018, Shift 2Easy

Which of the following represents alkenes?

  1. A.—C = C—
  2. B.—C—C—
  3. C.H—O—H
  4. D.O = C = O
Show answer
Correct answer: A. —C = C—

An alkene is an unsaturated hydrocarbon in which two carbon atoms are joined by a double bond, so the carbon-to-carbon double bond is its identity.