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RRB JE · Topic-wise previous year questions

General Science Previous Year Questions (page 5)

286 General Science questions asked in RRB JE previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.

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Physics: Electricity & Magnetism 59Physics: Light & Sound 32Chemistry: Acids, Bases & Salts 28Chemistry: Reactions 28Physics: Motion & Force 21Biology: Cell & Genetics 19Physics: Heat 18Biology: Plants 17Chemistry: Atoms & Periodic Table 12Biology: Nutrition & Diseases 11Chemistry: Carbon & Compounds 8
Q201RRB JE CBT-1, 20 Feb 2026, Shift 3 (4:30 PM)
A town replaces all plastic bags with cloth bags. Which chain reaction is expected in the ecosystem?
  1. ACloth bags cause soil toxicity
  2. BPlastic still enters the food chain
  3. CMore plastic accumulates in water bodies
  4. DReduced pollution and decreased biological magnification
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Correct answer: (D) Reduced pollution and decreased biological magnification

Q202RRB JE CBT-1, 20 Feb 2026, Shift 3 (4:30 PM)
Identify the CORRECT statement about the chlor-alkali process:
  1. AIt is used for the preparation of Na2CO3 solution by electrolysis of brine.
  2. BHydrogen gas is formed at the cathode and chlorine gas at the anode.
  3. CSodium hydroxide is generated near the anode during electrolysis.
  4. DNaOH is formed at the anode and chlorine gas at the cathode.
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Correct answer: (B) Hydrogen gas is formed at the cathode and chlorine gas at the anode.

Q203RRB JE CBT-1, 20 Feb 2026, Shift 3 (4:30 PM)
Which element exists as a monoatomic molecule?
  1. AOxygen
  2. BChlorine
  3. CNitrogen
  4. DArgon
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Correct answer: (D) Argon

Q204RRB JE CBT-1, 20 Feb 2026, Shift 3 (4:30 PM)
Which pair of olfactory indicators loses its smell in a basic solution?
  1. AVanilla essence and clove oil
  2. BOnion and blue litmus
  3. CTurmeric and onion
  4. DPhenolphthalein and onion
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Correct answer: (A) Vanilla essence and clove oil

Q205RRB JE CBT-1, 20 Feb 2026, Shift 3 (4:30 PM)
What happens to the potential energy of an object if its mass is halved while its height above the ground remains constant?
  1. AThe potential energy becomes zero
  2. BThe potential energy is doubled
  3. CThe potential energy remains unchanged
  4. DThe potential energy is halved
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Correct answer: (D) The potential energy is halved

Q206RRB JE CBT-1, 20 Feb 2026, Shift 3 (4:30 PM)
Which of the following types of connective tissue is present in the larynx of a human body?
  1. AAreolar
  2. BAdipose
  3. CLigament
  4. DCartilage
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Correct answer: (D) Cartilage

Q207RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
A room heater and an electric bulb both convert electrical energy to heat, but why does only the bulb emit significant visible light?
  1. AThe bulb's filament reaches a higher temperature, emitting visible light
  2. BThe heater uses magnetic effect instead of heating effect
  3. CThe heater is made of a different material
  4. DThe circuit design is different
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Correct answer: (A) The bulb's filament reaches a higher temperature, emitting visible light

Q208RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
Which of the following is NOT correctly matched, with regard to plant and animal cells?
  1. APlastids - Absent in animal cells
  2. BVacuoles - Very large and present in plant cells
  3. CPlastids - Present in plant cells
  4. DCell wall - Present in animal cells
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Correct answer: (D) Cell wall - Present in animal cells

Q209RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
Which of the following is an example of membrane bound little structures present in a cell?
  1. ACytoplasm
  2. BLysosome
  3. CNucleoplasm
  4. DRibosome
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Correct answer: (B) Lysosome

Q210RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
A security mirror in a store is required to provide a wide field of view and always form diminished, upright images regardless of the position of objects. Which type of mirror and principle should be used for its design?
  1. APlane mirror for undistorted images
  2. BConcave mirror using the mirror formula for real, inverted images
  3. CConcave mirror for magnification
  4. DConvex mirror using the mirror formula for virtual, diminished images
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Correct answer: (D) Convex mirror using the mirror formula for virtual, diminished images

Q211RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
Which international agreement aims to limit global temperature rise below 2°C?
  1. AParis Agreement
  2. BMontreal Protocol
  3. CKyoto Protocol
  4. DRio Declaration
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Correct answer: (A) Paris Agreement

Q212RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
Chloroplast is present in which of the following parts of a cell?
  1. ANucleoplasm
  2. BPeroxisome
  3. CCytoplasm
  4. DEndoplasmic reticulum
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Correct answer: (C) Cytoplasm

Q213RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
In a redox reaction, what is the role of a 'reducing agent'?
  1. AIt is a catalyst that speeds up the reaction.
  2. BIt is an agent that helps other substances to be oxidized.
  3. CIt is a substance that causes reduction and itself gets oxidized.
  4. DIt is a substance that only participates in decomposition reactions.
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Correct answer: (C) It is a substance that causes reduction and itself gets oxidized.

Q214RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
Which of the following statements is correct regarding the storage of grains?
  1. AAbiotic factors responsible for losses in stored grains are temperature, rodents and fungi.
  2. BBiotic factors responsible for losses in stored grains are insects, rodents and moisture.
  3. CBiotic factors responsible for losses in stored grains are insects, rodents and fungi.
  4. DStorage losses in agriculture produce can be very low.
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Correct answer: (C) Biotic factors responsible for losses in stored grains are insects, rodents and fungi.

Q215RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
Which statement best explains why blood cells are NOT found in the urine of a healthy person?
  1. AThey are broken down in the kidneys
  2. BThey are too large to pass through glomerular pores
  3. CThey are reabsorbed in tubules
  4. DThey are filtered and returned to the blood
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Correct answer: (B) They are too large to pass through glomerular pores

Q216RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
When magnesium reacts with oxygen to form magnesium oxide, which of the following statements is NOT correct?
  1. AMagnesium loses electrons to form Mg2+ ions.
  2. BMagnesium loses electrons to form Mg3+ ions.
  3. CThe compound formed contains ionic bonds.
  4. DOxygen gains electrons to form O2- ions.
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Correct answer: (B) Magnesium loses electrons to form Mg3+ ions.

Q217RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
What role does the earth wire play in the safety of domestic appliances with metallic bodies?
  1. AIt controls the current flow
  2. BIt prevents the fuse from melting
  3. CIt increases the appliance's voltage
  4. DIt provides a low-resistance path for leakage current
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Correct answer: (D) It provides a low-resistance path for leakage current

Q218RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
Which combination best represents essential life processes for maintaining an individual organism?
  1. ANutrition, respiration, transportation and excretion
  2. BReproduction, variation, heredity and adaptation
  3. CLocomotion, feeding, communication and defence
  4. DGrowth, movement, reproduction and response
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Correct answer: (A) Nutrition, respiration, transportation and excretion

Q219RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
Why is nitrogen gas used to prevent oxidation in bags containing foods such as chips?
  1. ANitrogen gas makes chips crispier.
  2. BNitrogen gas inhibits oxidation by replacing oxygen.
  3. CNitrogen gas accelerates oxidation.
  4. DNitrogen gas enhances the taste of the food.
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Correct answer: (B) Nitrogen gas inhibits oxidation by replacing oxygen.

Q220RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
A device operates at 2 amperes current and 220 volts potential difference for 5 hours. How much electrical energy does it consume, expressed in kilowatt hours (kWh)?
  1. A2.2 kWh
  2. B0.22 kWh
  3. C5 kWh
  4. D1.1 kWh
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Correct answer: (A) 2.2 kWh

Q221RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
Why do gases exert pressure on the walls of the container?
  1. AGas particles attract the container walls strongly
  2. BGas particles move randomly and strike the walls
  3. CGas particles stay fixed inside the container
  4. DGas particles possess very low kinetic energy
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Correct answer: (B) Gas particles move randomly and strike the walls

Q222RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
An object is placed on a shelf 2 m above the ground. If the shelf is raised to 4 m, what happens to the potential energy of the object?
  1. AThe potential energy doubles
  2. BThe potential energy remains the same
  3. CThe potential energy halves
  4. DThe potential energy triples
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Correct answer: (A) The potential energy doubles

Q223RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)
Which of the following is a musical instrument that consists of a set of glass, metal or clay bowls, each having varying levels of water?
  1. ASitar
  2. BJaltarang
  3. CShehnai
  4. DSarod
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Correct answer: (B) Jaltarang

Q224RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
Methane reacts with chlorine in the presence of sunlight to form chloromethane and hydrogen chloride. Which of the following statements is CORRECT? Statement I: Only one chlorine atom can substitute at a time. Statement II: The reaction is an example of a substitution reaction. Statement III: Multiple substitution can occur if the reaction continues.
  1. AOnly I and III are true
  2. BOnly II and III are true
  3. CI, II and III are true
  4. DOnly I and II are true
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Correct answer: (C) I, II and III are true

Q225RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
Which change will promote micelle formation in a detergent solution?
  1. AIncreasing detergent concentration above Critical Micelle Concentration(CMC)
  2. BLowering the temperature below Kraft point
  3. CAdding more water to dilute the solution
  4. DDecreasing detergent concentration below Critical Micelle Concentration(CMC)
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Correct answer: (A) Increasing detergent concentration above Critical Micelle Concentration(CMC)

Q226RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
Which property explains why the path of light is not visible when a beam passes through a true solution?
  1. AParticles are smaller than one nanometre
  2. BParticles can be removed by filtration
  3. CParticles are heavier than solvent molecules
  4. DParticles settle down on standing still
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Correct answer: (A) Particles are smaller than one nanometre

Q227RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
What is a key difference between chemical fertilisers and manures in terms of nutrient release to plants?
  1. AManures have higher and less variable nutrient concentrations.
  2. BChemical fertilisers enhance biological activity.
  3. CManures release nutrients gradually.
  4. DConventional chemical fertilisers release nutrients gradually.
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Correct answer: (C) Manures release nutrients gradually.

Q228RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
Which metal listed below shows the strongest reaction when added to dilute hydrochloric acid?
  1. AMagnesium
  2. BIron
  3. CZinc
  4. DCopper
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Correct answer: (A) Magnesium

Q229RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
Why does a torch bulb glow only when the switch is turned on?
  1. ABecause the bulb is functional
  2. BBecause the bulb is in series with the cell
  3. CBecause the battery is charged
  4. DBecause the switch completes the circuit, allowing current to flow
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Correct answer: (D) Because the switch completes the circuit, allowing current to flow

Q230RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
When an object is placed at the center of curvature (C) of a concave mirror, what is the nature of the image formed?
  1. AEnlarged and inverted
  2. BHighly diminished, point-sized
  3. CReal and inverted
  4. DVirtual and erect
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Correct answer: (C) Real and inverted

Q231RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
Why is potassium hydroxide used in the bell-jar experiment involving photosynthesis?
  1. ATo absorb carbon dioxide
  2. BTo provide sunlight
  3. CTo supply oxygen
  4. DTo remove water
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Correct answer: (A) To absorb carbon dioxide

Q232RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
What happens to the work done if the displacement becomes zero despite a force being applied?
  1. AThe work done decreases.
  2. BThe work done increases.
  3. CThe work done is zero.
  4. DThe work done remains constant.
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Correct answer: (C) The work done is zero.

Q233RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
Which of the following compounds has a formula unit mass of 100 u?
  1. AMgO
  2. BCaCl2
  3. CNa2CO3
  4. DCaCO3
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Correct answer: (D) CaCO3

Q234RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
Which of the following is present only in plant cell?
  1. ACell wall
  2. BVacuoles
  3. CNucleus
  4. DEndoplasmic reticulum
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Correct answer: (A) Cell wall

Q235RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
Why are non-biodegradable substances harmful for the environment?
  1. ACan be broken down by bacteria
  2. BNeeds heat and temperature for breakdown, releases harmful chemicals
  3. CCauses no pollution in water
  4. DEasily mixes with soil
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Correct answer: (B) Needs heat and temperature for breakdown, releases harmful chemicals

Q236RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)
Which rule helps to determine the direction of force acting on a current-carrying conductor in a magnetic field?
  1. AAmpere's rule
  2. BFaraday's law
  3. CFleming's left-hand rule
  4. DRight-hand rule
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Correct answer: (C) Fleming's left-hand rule

Q237RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
Which crop should a farmer consider for cultivation if he wants to increase protein content in his harvest?
  1. ACereals
  2. BOilseeds
  3. CPulses
  4. DVegetables and spices
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Correct answer: (C) Pulses

Q238RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
A student observes that a compass needle deflects when brought near a current- carrying wire. Using your understanding of magnetic fields, explain why this happens.
  1. AA current-carrying wire creates a magnetic field that exerts a force on the compass needle.
  2. BThe wire causes a gravitational effect moving the needle.
  3. CThe wire heats up, causing air currents to move the needle.
  4. DThe wire produces an electric force that acts on the compass needle.
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Correct answer: (A) A current-carrying wire creates a magnetic field that exerts a force on the compass needle.

Q239RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
An electric iron uses a heating element made of an alloy instead of pure metal. Which property of alloys justifies this choice?
  1. AAlloys have higher resistivity and do not oxidise readily at high temperatures
  2. BAlloys are cheaper
  3. CAlloys are better conductors
  4. DAlloys have lower resistivity
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Correct answer: (A) Alloys have higher resistivity and do not oxidise readily at high temperatures

Q240RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
Which of the following is the correct relationship between the number of carbon and hydrogen atoms in alkenes?
  1. ACnH2n+4
  2. BCnH2n+2
  3. CCnH2n-2
  4. DCnH2n
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Correct answer: (D) CnH2n

Q241RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
Which process is used to convert zinc carbonate ore into zinc oxide before reduction?
  1. AHeating strongly in limited air
  2. BHeating with aluminium powder
  3. CHeating with carbon powder
  4. DHeating strongly in excess air
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Correct answer: (A) Heating strongly in limited air

Q242RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
Select the correct option regarding the following two statements labelled Assertion (A) and Reason (R). Assertion (A): Excess accumulation of biodegradable waste can also create environmental problems. Reason (R): Slow decomposition may lead to foul smell and spread of disease.
  1. ABoth A and R are true, and R is the correct explanation of A
  2. BA is true, but R is false
  3. CBoth A and R are true, but R is not the correct explanation of A
  4. DA is false, but R is true
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Correct answer: (A) Both A and R are true, and R is the correct explanation of A

Q243RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
A bi-convex lens forms a real, inverted image twice as large as the object. Where is the object located relative to the lens?
  1. ABetween one focal length and twice the focal length from the lens
  2. BBeyond twice the focal length from the lens
  3. CAt twice the focal length from the lens
  4. DAt the focal length from the lens
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Correct answer: (A) Between one focal length and twice the focal length from the lens

Q244RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
Why is mercury obtained from cinnabar ore through two heating steps instead of direct reduction?
  1. AMercury sulphide must first change into oxide
  2. BMercury metal reacts with oxygen on heating
  3. CMercury oxide forms only in absence of air
  4. DMercury sulphide melts before decomposition
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Correct answer: (A) Mercury sulphide must first change into oxide

Q245RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
A bright metal turns dull over time due to oxidation. What is this process called?
  1. ACorrosion
  2. BSublimation
  3. CFiltration
  4. DEvaporation
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Correct answer: (A) Corrosion

Q246RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
Baking soda (NaHCO3) is commonly used in cooking. Which of the following statements about it is correct?
  1. AIt is a strong base that turns red litmus blue.
  2. BIt is acidic in nature and has pH < 7.
  3. CIt does not react with water or acids.
  4. DIt reacts with acids to release carbon dioxide gas.
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Correct answer: (D) It reacts with acids to release carbon dioxide gas.

Q247RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
A large central vacuole is a characteristic feature of which of the following cells?
  1. AProtozoan cells
  2. BBacterial cells
  3. CPlant cells
  4. DAnimal cells
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Correct answer: (C) Plant cells

Q248RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
What is the main purpose of giving vaccinations to farm animals?
  1. ATo protect them from major viral and bacterial diseases
  2. BTo prevent attacks from external parasites
  3. CTo increase milk production
  4. DTo improve the quality of animal feed
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Correct answer: (A) To protect them from major viral and bacterial diseases

Q249RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
When an object is in free fall near the Earth's surface, which of the following physical quantities remains constant if air resistance is neglected?
  1. AEnergy remains constant.
  2. BMomentum remains constant.
  3. CAcceleration due to gravity remains constant.
  4. DVelocity remains constant.
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Correct answer: (C) Acceleration due to gravity remains constant.

Q250RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)
A ball is placed at the edge of a table and left undisturbed. Which form of energy does the ball primarily possess due to its position, and what can happen if it is pushed off the table?
  1. AThe ball possesses chemical energy and will release it when it falls.
  2. BThe ball possesses elastic potential energy due to its shape.
  3. CThe ball possesses potential energy and will convert it to kinetic energy as it falls.
  4. DThe ball possesses kinetic energy and will remain at rest unless a force acts on it.
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Correct answer: (C) The ball possesses potential energy and will convert it to kinetic energy as it falls.

How to use these RRB JE General Science questions

Every question here was asked in a real RRB JE paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full RRB JE papers as timed tests to check your speed under exam conditions.

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