Previous year questions · RRB Group D

RRB Group D General Science — Previous Year Questions

6120 General Science questions asked in past RRB Group D papers, split into 612 timed practice sets — every question with its answer and explanation.

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About RRB Group D General Science previous year questions

This page collects every General Science question that has appeared in past RRB Group D papers on AajExam — 6120 questions in total, organised into 612 short, timed practice sets. Each question is shown with its four options, the correct answer, and an explanation of the reasoning, so you can use the page either as a self-test or as a revision reference. Why previous year questions are the highest-value General Science preparation you can do for RRB Group D: recruitment boards reuse a stable pool of concepts across cycles. The wording changes, the underlying idea rarely does. Working through a few hundred genuine past General Science questions teaches you which sub-topics the paper actually rewards, how the examiner likes to frame distractors, and roughly how long each question type should take — none of which a syllabus document can tell you. How to use this page: attempt questions in blocks of ten without looking at the answers, then review every question you got wrong or guessed. Read the explanation for the concept, not just the answer letter. When a concept keeps catching you out, open the related topic page linked below and drill that single area before returning here. Repeat across the full bank, and track how your accuracy on the second pass compares with your first — a 15-20% improvement is normal and is the clearest sign your preparation is working. What is in this bank: the questions are transcribed from actual RRB Group D question papers, kept in the original order and wording, with solutions written by subject specialists. Sets are free to attempt, work on mobile, and need no login to read. If you would rather practise a complete paper end to end under exam conditions, the full RRB Group D previous-year papers are linked below as well.

General Science PYQs asked in RRB Group D

A sample of 30 questions from the full bank of 6120. Try each one before opening the solution — the remaining questions are in the timed practice sets below.

Q1.Which of the following statements is true for a velocity-time graph of uniform velocity?
- A.Slope = Acceleration = 0
- B.Area under curve = speed, not displacement
- C.The graph is a curve
- D.Slope = Acceleration ≠ 0
Show answer
Answer: A. Slope = Acceleration = 0
Q2.Butane (C₄H₁₀) exists in two different forms: one with a straight chain and one with a branched chain. What is this phenomenon called?
- A.Isomerism
- B.Polymerisation
- C.Sublimation
- D.Catenation
Show answer
Answer: A. Isomerism
Q3.Which of the following functions is NOT performed by the placenta?
- A.Allows oxygen and nutrients to pass from mother to fetus
- B.Removes carbon dioxide and waste from fetal blood
- C.Produces hormones to support pregnancy
- D.Secretes oxytocin to start childbirth
Show answer
Answer: D. Secretes oxytocin to start childbirth
Q4.Which of the following statement(s) is true when a straw appears bent when placed in a glass of water? Statement 1: The incident ray, refracted ray, and normal lie in the same plane. Statement 2: The ratio of sine of angle of incidence to sine of angle of refraction is constant.
- A.Only statement 1
- B.Only statement 2
- C.Neither statement 1 nor 2
- D.Both statement 1 and 2
Show answer
Answer: D. Both statement 1 and 2
Q5.Which of the following factors is NOT responsible for corrosion?
- A.Alloying
- B.Water
- C.Air
- D.Acid
Show answer
Answer: A. Alloying
Q6.Bone is classified as connective tissue primarily because it:
- A.Contains cells dispersed in a mineralised extracellular matrix
- B.Transports oxygen
- C.Lacks any matrix substance
- D.Produces nerve impulses
Show answer
Answer: A. Contains cells dispersed in a mineralised extracellular matrix
Q7.Which of the following are cultivated for the pearls they make?
- A.Oysters
- B.Sardines
- C.Prawns
- D.Pomfrets
Show answer
Answer: A. Oysters
Q8.What is the chemical formula of magnesium chloride?
- A.MgCl
- B.MgCl₃
- C.MgCl2
- D.Mg₂Cl
Show answer
Answer: C. MgCl2
Q9.In graphite, each carbon atom is bonded to three other carbon atoms in the same plane giving a array.
- A.pentagonal
- B.square pyramidal
- C.tetragonal
- D.hexagonal
Show answer
Answer: D. hexagonal
Q10.A person wearing shoes with total area 0.02 m² stands on the ground. If the person’s weight is 600 N, the pressure on the ground is .
- A.600 N/m²
- B.1200 N/m²
- C.30,000 N/m²
- D.12,000 N/m²
Show answer
Answer: C. 30,000 N/m²
Q11.What is the main function of leucoplasts in plant cells?
- A.Breaking down waste materials
- B.Absorbing sunlight
- C.Storing materials like starch, oils, and proteins
- D.Giving colour to flowers
Show answer
Answer: C. Storing materials like starch, oils, and proteins
Q12.A concave lens has a focal length of 15 cm. An object is placed at a distance of 30 cm from the lens. What is the magnification produced by the lens?
- A.+0.33
- B.-0.33
- C.+0.66
- D.-0.66
Show answer
Answer: A. +0.33
Q13.Which of the following statements is INCORRECT about DNA copies produced during the process of reproduction?
- A.DNA copies are single stranded.
- B.DNA copies generated are similar but not identical.
- C.Copying of DNA is a pre-requisite for reproduction.
- D.DNA copying is a completely error-free process.
Show answer
Answer: D. DNA copying is a completely error-free process.
Q14.Which of the following was the scientist who blended his knowledge of science and mathematics to arrive at the laws of inheritance?
- A.E Rutherford
- B.John Dalton
- C.Gregor Johann Mendel
- D.Camillo Golgi
Show answer
Answer: C. Gregor Johann Mendel
Q15.Which of the following organs is involved in the function of reflex action?
- A.Middle ear
- B.Spleen
- C.Spinal cord
- D.Kidney
Show answer
Answer: C. Spinal cord
Q16.Which of the following correctly explains the importance of pH in everyday life?
- A.Acid rain has pH greater than 7, which harms aquatic life.
- B.Our stomach secretes hydrochloric acid to maintain a pH around 2, aiding digestion.
- C.A bee sting injects a basic liquid, so it is treated with a weak acid like vinegar.
- D.Tooth enamel dissolves when the pH of the mouth rises above 7.5 due to bacterial activity.
Show answer
Answer: B. Our stomach secretes hydrochloric acid to maintain a pH around 2, aiding digestion.
Q17.Which of the following organs in human females can produce hormones?
- A.Salivary glands
- B.Cervix
- C.Fallopian tubes
- D.Ovaries
Show answer
Answer: D. Ovaries
Q18.Which of the following correctly describes the sequence of events leading to muscle movement?
- A.Blood flow → Protein activation → Nerve impulse → Movement
- B.Digestion → Blood circulation → Movement
- C.Nerve impulse → Muscle protein response → Muscle contraction
- D.DNA replication → Protein synthesis → Muscle movement
Show answer
Answer: C. Nerve impulse → Muscle protein response → Muscle contraction
Q19.What unique property of carbon atoms enables them to form long and stable chains with other carbon atoms?
- A.Allotropy
- B.Catenation
- C.Isomerism
- D.Tetravalency
Show answer
Answer: B. Catenation
Q20.Which gas is used by animals to live under water?
- A.Nitrogen
- B.Carbon dioxide
- C.Dry carbon dioxide
- D.Dissolved oxygen
Show answer
Answer: D. Dissolved oxygen
Q21.During indigestion, the stomach produces too much acid, that may be neutralised by which of the following?
- A.Magnesium carbonate (Milk of magnesia)
- B.Magnesium hydroxide (Milk of magnesia)
- C.Magnesium sulphate (Milk of magnesia)
- D.Magnesium oxide (Milk of magnesia)
Show answer
Answer: B. Magnesium hydroxide (Milk of magnesia)
Q22.An object is said to be in uniform motion if:
- A.it covers equal distances in equal time intervals
- B.it covers unequal distances in unequal time intervals
- C.it covers unequal distances in equal time intervals
- D.it covers equal distances in unequal time intervals
Show answer
Answer: A. it covers equal distances in equal time intervals
Q23.Which of the following statements about the magnetic field due to a circular loop is true?
- A.The field depends on current and radius.
- B.The field lines are parallel to the plane of the loop.
- C.The field is uniform everywhere around the loop.
- D.The field lines at the centre are circular.
Show answer
Answer: A. The field depends on current and radius.
Q24.In the following reaction, Fe + CuSO₄ → FeSO₄ + Cu, iron:
- A.is oxidised
- B.is reduced
- C.acts a catalyst
- D.is unchanged
Show answer
Answer: A. is oxidised
Q25.The energy possessed by a moving object due to its motion is called:
- A.thermal energy
- B.potential energy
- C.chemical energy
- D.kinetic energy
Show answer
Answer: D. kinetic energy
Q26.Which of the following life processes leads to the breakdown of glucose in the absence of oxygen?
- A.Fermentation
- B.Digestion
- C.Excretion
- D.Aerobic respiration
Show answer
Answer: A. Fermentation
Q27.Which of the following is a homogeneous mixture?
- A.Air
- B.Oil and water
- C.Soil
- D.Sand and iron filings
Show answer
Answer: A. Air
Q28.The IUPAC name of following compound is . CH3CHBrCH2CH2CH3.
- A.1-Bromopentane
- B.2-Bromopentane
- C.3-Bromopentane
- D.2-Bromopentene
Show answer
Answer: B. 2-Bromopentane
Q29.Which of the following is NOT a biotic loss during the storage of grains?
- A.Loss by rodents
- B.Loss by inappropriate moisture
- C.Loss by insects
- D.Loss by mites
Show answer
Answer: B. Loss by inappropriate moisture
Q30.Which of the following statements is correct about reproduction? Bulls alone can produce a calf. Hens alone can not produce new chicks.
- A.Both statements are correct.
- B.Statement 2 is correct but Statement 1 is false.
- C.Both statements are false.
- D.Statement 1 is correct but Statement 2 is false.
Show answer
Answer: B. Statement 2 is correct but Statement 1 is false.

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RRB Group D syllabus & pattern Full RRB Group D question papers All General Science practice

Frequently Asked Questions

How many RRB Group D General Science previous year questions are available?

6120 General Science questions from past RRB Group D papers are available on AajExam, split into 612 practice sets. New questions are added as fresh papers are released.

Are the answers and explanations free?

Yes. Every question on this page shows its correct answer and explanation free of charge, and you do not need an account to read them. A free account only adds attempt tracking and performance analytics.

Do RRB Group D repeat questions from previous years?

Exact repeats do occur, but the more reliable pattern is conceptual: the same General Science sub-topics reappear cycle after cycle with reworded questions. That is why working through past questions raises your score more reliably than reading theory alone.

How should I use these questions in my RRB Group D preparation?

Attempt a set of ten cold, review every wrong and guessed question with its explanation, then drill the weak sub-topic on its topic page before moving on. Revisit the same set after a few days — your second-attempt accuracy is the honest measure of whether the concept stuck.

RRB Group D General Science practice sets

Each set is a timed 10-question drill drawn from the same question bank.

About RRB Group D General Science previous year questions

General Science PYQs asked in RRB Group D

Q1.Which of the following statements is true for a velocity-time graph of uniform velocity?

Q2.Butane (C₄H₁₀) exists in two different forms: one with a straight chain and one with a branched chain. What is this phenomenon called?

Q3.Which of the following functions is NOT performed by the placenta?

Q4.Which of the following statement(s) is true when a straw appears bent when placed in a glass of water? Statement 1: The incident ray, refracted ray, and normal lie in the same plane. Statement 2: The ratio of sine of angle of incidence to sine of angle of refraction is constant.

Q5.Which of the following factors is NOT responsible for corrosion?

Q6.Bone is classified as connective tissue primarily because it:

Q7.Which of the following are cultivated for the pearls they make?

Q8.What is the chemical formula of magnesium chloride?

Q9.In graphite, each carbon atom is bonded to three other carbon atoms in the same plane giving a array.

Q10.A person wearing shoes with total area 0.02 m² stands on the ground. If the person’s weight is 600 N, the pressure on the ground is .

Q11.What is the main function of leucoplasts in plant cells?

Q12.A concave lens has a focal length of 15 cm. An object is placed at a distance of 30 cm from the lens. What is the magnification produced by the lens?

Q13.Which of the following statements is INCORRECT about DNA copies produced during the process of reproduction?

Q14.Which of the following was the scientist who blended his knowledge of science and mathematics to arrive at the laws of inheritance?

Q15.Which of the following organs is involved in the function of reflex action?

Q16.Which of the following correctly explains the importance of pH in everyday life?

Q17.Which of the following organs in human females can produce hormones?

Q18.Which of the following correctly describes the sequence of events leading to muscle movement?

Q19.What unique property of carbon atoms enables them to form long and stable chains with other carbon atoms?

Q20.Which gas is used by animals to live under water?

Q21.During indigestion, the stomach produces too much acid, that may be neutralised by which of the following?

Q22.An object is said to be in uniform motion if:

Q23.Which of the following statements about the magnetic field due to a circular loop is true?

Q24.In the following reaction, Fe + CuSO₄ → FeSO₄ + Cu, iron:

Q25.The energy possessed by a moving object due to its motion is called:

Q26.Which of the following life processes leads to the breakdown of glucose in the absence of oxygen?

Q27.Which of the following is a homogeneous mixture?

Q28.The IUPAC name of following compound is . CH3CHBrCH2CH2CH3.

Q29.Which of the following is NOT a biotic loss during the storage of grains?

Q30.Which of the following statements is correct about reproduction? Bulls alone can produce a calf. Hens alone can not produce new chicks.

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RRB Group D General Science practice sets

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