General SciencePYQ Mixmedium

RRB Group D - General Science PYQ Quiz 251

10 PYQ questions from RRB Group D - General Science

10
Minutes
10
Marks
FREE
Access

About This Quiz

10 PYQ questions from RRB Group D - General Science RRB Group D - General Science PYQ Quiz 251 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 251 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 251 — 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.Identify the correct chemical reaction involved in bleaching powder preparation

    • A.2 NaCl (aq) + 2 H₂O (l) → 2 NaOH (aq) + Cl₂ (g) + H₂ (g)
    • B.NaCl + H₂O + CO₂ + NH₃ → NH₄Cl + NaHCO₃
    • C.Ca(OH)₂ + Cl₂ → CaOCl₂ + H₂O
    • D.NaHCO₃ + H⁺ → CO₂ + H₂O + Sodium salt of acid
    Show answer

    Answer: C. Ca(OH)₂ + Cl₂ → CaOCl₂ + H₂O

  2. Q2.Which of the following statements are correct? (a) For a lens the first principal focus is the position of the object whose image is at infinity (b) For a lens the first principal focus is the position of the object whose image is formed at twice the focal length. (c) For a lens the second principal focus is the position of the real image whose object is at infinity. (d) For a lens the second principal focus is the position of the object whose image is formed at twice the focal length.

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

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

  3. Q3.A wire of a given material has length 'l' and resistance 'R'. Another wire of the same material having three times the length and twice the area of cross section will have a resistance equal to:

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

    Answer: B. 3/2 R

  4. Q4.How and when is oxygen produced as a waste product in plants?

    • A.By respiration during the day
    • B.By photosynthesis during the night
    • C.By photosynthesis during the day
    • D.By respiration during the night
    Show answer

    Answer: C. By photosynthesis during the day

  5. Q5.Match the following: Column A: i. red cabbage leaves, ii. methyl orange, iii. Onion, clove Column B: a. olfactory indicator, b. acid base indicator, c. natural acid base indicator

    • A.i-a, ii-c, iii-b
    • B.i-a, ii-b, iii-c
    • C.i-c, ii-b, iii-a
    • D.i-c, ii-a, iii-b
    Show answer

    Answer: C. i-c, ii-b, iii-a

  6. Q6.1 horsepower equals:

    • A.746 J
    • B.74.6 J/s
    • C.746 W
    • D.746 kW
    Show answer

    Answer: C. 746 W

  7. Q7.Which of the following is NOT a possible isomer of hexane?

    • A.2-ethyl pentane
    • B.3-methyl pentane
    • C.2-methyl pentane
    • D.2, 2 dimethyl butane
    Show answer

    Answer: A. 2-ethyl pentane

  8. Q8.What was the achievement of Dobereiner's triads?

    • A.First attempt to study the size of atoms.
    • B.First attempt to relate the properties of elements with atomic mass.
    • C.First attempt to study the colour of elements.
    • D.First attempt to study the atomicity of molecules.
    Show answer

    Answer: B. First attempt to relate the properties of elements with atomic mass.

  9. Q9.An object is placed at the principal focus of a concave lens. Which of the following options represents the characteristics of the image formed?

    • A.Virtual and enlarged
    • B.Virtual and highly diminished
    • C.Real and enlarged
    • D.Real and diminished
    Show answer

    Answer: B. Virtual and highly diminished

  10. Q10.Which of the following properties do covalent compounds generally NOT exhibit?

    • A.They are not soluble in an organic solvent.
    • B.They are bad conductors of electricity and heat.
    • C.They form by sharing of electrons.
    • D.They do not form ions generally.
    Show answer

    Answer: A. They are not soluble in an organic solvent.

Loading quiz preview…

Frequently Asked Questions

Is RRB Group D - General Science PYQ Quiz 251 free to attempt on AajExam?

Yes. RRB Group D - General Science PYQ Quiz 251 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 251?

RRB Group D - General Science PYQ Quiz 251 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 251 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 251 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.

Related PYQ Mix Quizzes

Adaptive Practice: PYQ Mix
RRB Group D - General Science PYQ Quiz 306
RRB Group D - General Science PYQ Quiz 305
RRB Group D - General Science PYQ Quiz 304
RRB Group D - General Science PYQ Quiz 303
RRB Group D - General Science PYQ Quiz 302