General SciencePYQ Mixmedium

RRB Group D - General Science PYQ Quiz 257

10 PYQ questions from RRB Group D - General Science

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About This Quiz

10 PYQ questions from RRB Group D - General Science RRB Group D - General Science PYQ Quiz 257 is a free, 10-minute, 10-mark practice quiz on AajExam rated at medium difficulty, designed to help candidates preparing for SSC, UPSC, Banking, Railway and State PSC government competitive exams sharpen their command of PYQ Mix (General Science). Every question on this quiz ships with a detailed step-by-step solution so you don't just learn the right answer — you learn the reasoning and shortcuts top scorers use to crack similar questions faster on the actual exam day. Why RRB Group D - General Science PYQ Quiz 257 matters in your preparation: government exam-conducting bodies repeatedly draw questions from the same chapters and the same skill-clusters across recruitment cycles. By attempting focused topic-wise quizzes like this one, you build pattern recognition — the ability to spot which formula, rule or trick applies the moment you see a question. Toppers consistently report that 5-10 quizzes on a single topic delivers more exam-day score gain than 20+ unfocused full-length mocks, because targeted drilling exposes your specific sub-topic weaknesses with surgical precision. How to use this quiz effectively: attempt it in one sitting under the 10-minute timer, without referring to notes or external resources — simulate exam-day conditions exactly. After submission, review the auto-generated analytics to see your accuracy, time per question and section-wise performance. Then go through every wrong and skipped question with the explanation, mentally tagging the underlying concept rather than just memorising the answer. Revisit this quiz after 7-10 days; your second attempt should be 15-20% faster with noticeably better accuracy. After mastering this quiz, explore the 6 related quizzes linked below to broaden your topic coverage. AajExam quiz design principles: every quiz on the platform is curated by subject experts using the actual question formats, difficulty distributions and time pressures of the target government exams. We deliberately avoid generic "textbook" questions in favour of exam-replicating ones. Solutions are written in plain English (and Hindi where source material was bilingual), with step-by-step working for quantitative problems, grammar rules for English questions, and direct reference statements for general awareness items. Performance analytics after each attempt include accuracy, attempt rate, time spent per question, and an estimated all-India percentile so you know exactly where you stand against other candidates. This quiz is completely free to attempt. You only need a free AajExam account to track your performance across attempts, view detailed solutions and unlock the platform-wide analytics dashboard. The platform is mobile-friendly and works seamlessly on smartphones, tablets and desktops — so you can sharpen your PYQ Mix (General Science) skills in any spare 15-minute window.

This is one set from a larger bank. See all RRB Group D General Science previous year questions.

RRB Group D - General Science PYQ Quiz 257 — Questions with Solutions

All 10 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.

  1. Q1.What happens when sodium metal reacts with water?

    • A.Hydrogen gas and sodium hydroxide solution are produced.
    • B.Chlorine gas and sodium hydroxide solution are produced.
    • C.No reaction takes place.
    • D.Only sodium hydroxide solution is produced.
    Show answer

    Answer: A. Hydrogen gas and sodium hydroxide solution are produced.

  2. Q2.The focal length of a diverging lens is 50 cm. The power of the lens is:

    • A.2 D
    • B.−2 D
    • C.−5 D
    • D.5 D
    Show answer

    Answer: B. −2 D

  3. Q3.What is the basic event in reproduction?

    • A.Cell division
    • B.Replication of DNA
    • C.Making of proteins
    • D.Replication of RNA
    Show answer

    Answer: B. Replication of DNA

  4. Q4.Which of the following is/are NOT true for ionic compounds? i. Ionic compounds have low melting and boiling points. ii. Ionic compounds are brittle and break into pieces when pressure is applied. iii. Ionic compounds are solid and are somewhat hard because of the strong force of attraction between the positive and negative ions. iv. Ionic compounds conduct electricity in the molten state.

    • A.i and ii
    • B.i and iii
    • C.i and iv
    • D.Only i
    Show answer

    Answer: D. Only i

  5. Q5.If a substance loses hydrogen during a reaction, it is said to be:

    • A.reduced
    • B.decomposed
    • C.neutralised
    • D.oxidised
    Show answer

    Answer: D. oxidised

  6. Q6.A light ray is travelling from air medium to water medium (refractive index = 1.3) such that angle of incidence is x degree and angle of refraction is y degree. The value of ratio (sin y)/(sin x) is:

    • A.1.3
    • B.1/1.3
    • C.1
    • D.0.3
    Show answer

    Answer: B. 1/1.3

  7. Q7.Identify the correct statement(s) from among the following. (a) Resistivity of a material is dependent on the nature of the material. (b) Resistivity of a material is independent of the area of cross section. (c) Resistivity of a pure metal is more than its alloy.

    • A.Only (a)
    • B.Only (b)
    • C.Both (a) and (b)
    • D.Both (b) and (c)
    Show answer

    Answer: C. Both (a) and (b)

  8. Q8.The laws of reflection hold true for which of the following mirror(s)? (A) Concave mirror (B) Convex mirror (C) Plane mirror

    • A.Only A and B
    • B.A, B and C
    • C.Only B and C
    • D.Only A and C
    Show answer

    Answer: B. A, B and C

  9. Q9.A ray of light is incident on an interface separating two media at an angle of incidence equal to 45°, and the refracted angle is 90°. The refractive index of the second medium with respect to the first is equal to:

    • A.√3/2
    • B.1/√2
    • C.1/2
    • D.√2
    Show answer

    Answer: D. √2

  10. Q10.The manufacturing of refrigerators that do not release chlorofluorocarbons has been made mandatory throughout the world. How will this help to prevent ozone depletion?

    • A.It will reduce the release of CFCs that react with ozone molecules.
    • B.It will help convert oxygen molecules into ozone.
    • C.CFCs will change into ozone molecules.
    • D.It will reduce the production of CFCs from oxygen molecules.
    Show answer

    Answer: A. It will reduce the release of CFCs that react with ozone molecules.

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Frequently Asked Questions

Is RRB Group D - General Science PYQ Quiz 257 free to attempt on AajExam?

Yes. RRB Group D - General Science PYQ Quiz 257 is completely free. You only need a free AajExam account to track your score, view detailed solutions and unlock cross-attempt analytics.

How long does it take to complete RRB Group D - General Science PYQ Quiz 257?

RRB Group D - General Science PYQ Quiz 257 runs on a 10-minute timer in real exam-style conditions. The clock starts the moment you click Start, mirroring the time pressure of the actual exam.

Are detailed solutions provided?

Yes. Every question on RRB Group D - General Science PYQ Quiz 257 ships with a complete step-by-step solution, the underlying concept, and (where applicable) shortcut tricks. You can also discuss any question with the AajExam community.

Can I attempt RRB Group D - General Science PYQ Quiz 257 multiple times?

Yes. You can attempt this quiz as many times as you like. Each attempt is recorded separately so you can track improvement in score, accuracy and time-management.

Which government exams does this quiz prepare me for?

PYQ Mix questions appear regularly in SSC CGL, CHSL, MTS, GD; IBPS PO, Clerk; SBI PO, Clerk; RRB NTPC, Group D; UPSC prelims and most State PSC exams. The specific weightage varies by exam — check the exam pattern on the corresponding AajExam exam page for details.

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