गुरुवार, 21 मई 2026

RRB GROUP-D LEVEL-1 CBT GENERAL SCIENCE 2025-26 (All Shifts) Q 1001 to Q 1100

 

General Science के MCQ in Hindi and English में जितने भी Objective Questions को cover किया गया है, जिसको Railway Life YouTube Channel की टीम ने तैयार किया है, वो आपके आने वाले Railway, SSC CGL, CHSL, CPO, MTS, BPSC, UPSC, UPPCS, MPPSC, Uttarakhand PCS, RAS/RTS, Chhattisgarh PSC, UP RO/ARO, UP UDA/LDA, Jharkhand PSC, UPSC CDS आदि Exams के लिए महत्वपूर्ण साबित होंगे। इसमें जितने भी Multiple Choice Questions (MCQ) and Answers on General Science (सामान्य विज्ञान) को 2024 to 2026 तक के वस्तुनिष्ठ प्रश्नों के आधार पर cover किया गया है, वे सभी Questions अलग-अलग Competitive Exams में पूछे जा चुके हैं। अतः आप लोगों को इसे अच्छी तरह से याद कर लेना चाहिए।

यह Questions RRB Group D Level-1 (CEN 08/2024 एवं CEN 09/2025) तथा वर्ष 2026 में आयोजित विभिन्न Railway Exams में पूछे गए प्रश्नों के आधार पर तैयार किए गए हैं।

 

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Q-1001 Which of the following salts will have a pH close to 7 when dissolved in water, निम्नलिखित में से कौन-सा salt water में घुलने पर pH लगभग 7 देगा
A) NaCl
B) NH₄Cl
C) CH₃COONa
D) Na₂CO₃
Answer: A
Description: NaCl, strong acid और strong base से बना salt सामान्यतः neutral होता है।

Q-1002 What is the formula unit mass of sodium chloride NaCl, sodium chloride NaCl का formula unit mass कितना है
A) 23u
B) 58.5u
C) 57u
D) 35.5u
Answer: B
Description: 58.5u, sodium का atomic mass 23u और chlorine का 35.5u है इसलिए कुल 58.5u होता है।

Q-1003 In a sound wave the particles of the medium _____, sound wave में medium ke particles _____
A) rotate continuously
B) vibrate perpendicular to the direction of wave propagation
C) do not vibrate
D) vibrate along the direction of wave propagation
Answer: D
Description: vibrate along the direction of wave propagation, sound longitudinal wave है जिसमें particles propagation की direction में vibrate करते हैं।

Q-1004 What happens to the gravitational force between two objects if the distance between them is doubled and everything else remains the same, यदि दो objects के बीच distance दोगुनी कर दी जाए तो gravitational force पर क्या प्रभाव पड़ेगा
A) The force becomes half
B) The force becomes four times
C) The force becomes one-fourth
D) The force becomes double
Answer: C
Description: The force becomes one-fourth, gravitational force distance के square के inversely proportional होता है।

Q-1005 Read the given statements and select the most appropriate option, Statement 1 Mirror formula is applicable to both concave and convex mirrors provided the sign convention is followed, Statement 2 The validity of Mirror formula depends on the size of the object
A) Both the statements 1 and 2 are not correct
B) Only statement 2 is correct
C) Both the statements 1 and 2 are correct
D) Only statement 1 is correct
Answer: D
Description: Only statement 1 is correct, mirror formula concave और convex दोनों mirrors पर लागू होती है जबकि इसकी validity object size पर निर्भर नहीं करती।

Q-1006 A sealed packet has a mass of 500 g and a volume of 350 cm³, Given the density of water is 1 g cm⁻³ will the packet float or sink in water and why, एक sealed packet का mass 500 g और volume 350 cm³ है, water की density 1 g cm⁻³ होने पर packet float करेगा या sink
A) Float because its density is less than water
B) Sink because the total volume is high
C) Sink because its density is greater than water's density
D) Float because its mass is low
Answer: C
Description: Sink because its density is greater than water's density, packet की density = 500 ÷ 350 = 1.43 g cm⁻³ जो water से अधिक है।

Q-1007 If the potential difference between two points is V and charge q moves between them the work done is _________, यदि दो points के बीच potential difference V है और charge q move करता है तो work done क्या होगा
A) W = V/q
B) W = V × q
C) W = q/V
D) W = V²/q
Answer: B
Description: W = V × q, work done = potential difference × charge।

Q-1008 A straight conductor carrying current is placed parallel to a uniform magnetic field, The force on the conductor will be, current carrying conductor को uniform magnetic field के parallel रखने पर force कितना होगा
A) infinite
B) zero
C) maximum
D) half the maximum
Answer: B
Description: zero, magnetic force F = BIL sinθ और parallel होने पर θ = 0° इसलिए force zero होगा।

Q-1009 A girl clapped her hands near a cliff and heard the echo after 8 s, What is the distance of the cliff from the girl if the speed of the sound is taken as 320 m s⁻¹, एक लड़की ने cliff के पास clap किया और 8 s बाद echo सुना, sound की speed 320 m s⁻¹ होने पर cliff की दूरी कितनी होगी
A) 1280 m
B) 80 m
C) 320 m
D) 640 m
Answer: A
Description: 1280 m, distance = speed × time ÷ 2 = 320 × 8 ÷ 2 = 1280 m।

Q-1010 When gypsum is heated at 373 K it loses water of crystallisation and forms _________, gypsum को 373 K पर heat करने पर वह water of crystallisation खोकर क्या बनाता है
A) calcium chloride pentahydrate
B) calcium chloride hemihydrate
C) calcium sulphate pentahydrate
D) calcium sulphate hemihydrate
Answer: D
Description: calcium sulphate hemihydrate, gypsum को heat करने पर plaster of paris बनता है जिसका formula CaSO₄·½H₂O है।

Q-1011 If the mass of two objects is halved and the distance between them is also halved the gravitational force ________, यदि दो objects के masses आधे कर दिए जाएँ और distance भी आधी कर दी जाए तो gravitational force क्या होगा
A) becomes one-fourth as much
B) remains same as before
C) becomes double
D) becomes half as much
Answer: B
Description: remains same as before, gravitational force F ∝ m₁m₂/r² इसलिए दोनों masses और distance आधे करने पर force unchanged रहता है।

Q-1012 Which of the following plant tissues is made up of cells that are dead at maturity, निम्नलिखित में से कौन-सा plant tissue maturity पर dead cells से बना होता है
A) Parenchyma
B) Aerenchyma
C) Collenchyma
D) Sclerenchyma
Answer: D
Description: Sclerenchyma, sclerenchyma की cells maturity पर dead हो जाती हैं।

Q-1013 Which of the following describe s the versatile nature of carbon, carbon की versatile nature को कौन-से statements describe करते हैं, a The ability to form bonds with other carbon atoms giving rise to large molecules, b The ability to form double bonds with other carbon atoms, c The ability to form bonds with other atoms like oxygen nitrogen sulphur hydrogen etc
A) All a b and c
B) Only a and c
C) Only a
D) Only b and c
Answer: A
Description: All a b and c, carbon की catenation multiple bonding और tetravalency उसकी versatile nature को दर्शाती हैं।

Q-1014 What is the primary function of lysosomes in a cell, cell में lysosomes का मुख्य कार्य क्या है
A) Synthesis of proteins and lipids for cell membranes
B) Digestion of foreign materials and worn-out organelles
C) Production of energy in the form of ATP molecules
D) Regulation of water and mineral balance within the cytoplasm
Answer: B
Description: Digestion of foreign materials and worn-out organelles, lysosomes intracellular digestion का कार्य करते हैं।

Q-1015 Match the common name of the bee with its scientific name, bees के common names को उनके scientific names से match करें, Column I 1 Indian bee 2 Rock bee 3 Little bee 4 Italian bee, Column II A Apis mellifera B Apis cerana indica C Apis dorsata D Apis florae
A) 1-D 2-A 3-C 4-B
B) 1-B 2-C 3-D 4-A
C) 1-A 2-B 3-C 4-D
D) 1-C 2-D 3-B 4-A
Answer: B
Description: 1-B 2-C 3-D 4-A, Indian bee = Apis cerana indica, Rock bee = Apis dorsata, Little bee = Apis florae, Italian bee = Apis mellifera।

Q-1016 When an object is placed beyond the centre of curvature C in front of a concave mirror what kind of image is formed, concave mirror के सामने object को centre of curvature से आगे रखने पर कैसी image बनती है
A) Same size real and upright
B) Highly enlarged and virtual
C) Enlarged virtual and upright
D) Diminished real and inverted
Answer: D
Description: Diminished real and inverted, object को C से आगे रखने पर image F और C के बीच बनती है।

Q-1017 According to Bohr’s model of an atom the M shell is represented by the principal quantum number n equal to, Bohr model के अनुसार M shell का principal quantum number n कितना होता है
A) 4
B) 3
C) 1
D) 2
Answer: B
Description: 3, K shell = 1, L shell = 2 और M shell = 3 होता है।

Q-1018 Which method is used to purify metals like Zinc and Copper, Zinc और Copper जैसे metals को purify करने के लिए कौन-सी method प्रयोग होती है
A) Smelting
B) Electrolytic refining
C) Roasting
D) Alloying
Answer: B
Description: Electrolytic refining, copper और zinc की purification electrolysis द्वारा की जाती है।

Q-1019 What can be said about the shape of a velocity-time graph for an object moving with non-uniform acceleration, non-uniform acceleration से moving object का velocity-time graph कैसा होता है
A) It is a curved line
B) It is always a straight line
C) It is always a horizontal line
D) It is always a downward sloping line
Answer: A
Description: It is a curved line, non-uniform acceleration में velocity unequal rate से बदलती है इसलिए graph curved होता है।

Q-1020 Statement 1 The potential difference is measured in volts, Statement 2 One volt is equal to one newton per coulomb, Which of the following is true
A) Both Statements 1 and 2 are incorrect
B) Both Statements 1 and 2 are correct
C) Only Statement 1 is correct
D) Only Statement 2 is correct
Answer: C
Description: Only Statement 1 is correct, potential difference volt में मापा जाता है जबकि one volt = one joule per coulomb होता है।

Q-1021 Which of the following is formed by a chemical reaction, निम्नलिखित में से कौन-सा chemical reaction द्वारा बनता है
A) Air
B) Soil
C) Brass
D) Water
Answer: D
Description: Water, hydrogen और oxygen के chemical reaction से water बनता है।

Q-1022 A body of mass m experiences a force F producing an acceleration a, If the same force acts on a body of mass 2m the acceleration produced will be, mass m वाली body पर force F लगाने से acceleration a मिलता है, यदि वही force 2m mass पर लगाया जाए तो acceleration कितना होगा
A) a
B) a/2
C) a/4
D) 2a
Answer: B
Description: a/2, Newton’s second law के अनुसार acceleration mass के inversely proportional होता है।

Q-1023 Which of the following organs in human females can produce hormones, human female में कौन-सा organ hormones produce करता है
A) Salivary glands
B) Cervix
C) Fallopian tubes
D) Ovaries
Answer: D
Description: Ovaries, ovaries estrogen और progesterone hormones produce करती हैं।

Q-1024 A force of 50 N acts perpendicular to a surface of area 0.1 m², What are the values of thrust and pressure exerted on the surface, 50 N force 0.1 m² area पर perpendicular act करता है, thrust और pressure के values क्या होंगे
A) Thrust = 50.0 N Pressure = 25.0 Pa
B) Thrust = 100.0 N Pressure = 50.0 Pa
C) Thrust = 25.0 N Pressure = 100.0 Pa
D) Thrust = 50.0 N Pressure = 500.0 Pa
Answer: D
Description: Thrust = 50.0 N Pressure = 500.0 Pa, pressure = force/area = 50/0.1 = 500 Pa।

Q-1025 When an object is placed at the principal focus of a convex lens the image is formed, convex lens के principal focus पर object रखने पर image कैसी बनती है
A) At 2F inverted and magnified
B) Between F and O virtual and erect
C) At infinity real inverted and highly enlarged
D) At the focus inverted and of same size
Answer: C
Description: At infinity real inverted and highly enlarged, object को focus पर रखने पर refracted rays parallel हो जाती हैं और image infinity पर बनती है।

 

Q-1026 Which of the following statements correctly defines the atomic number of an element, atomic number को कौन-सा statement सही define करता है
A) The number of protons in the nucleus of an atom
B) The number of neutrons in the nucleus of an atom
C) The total number of protons and neutrons in the nucleus
D) The number of electrons in the outermost shell of an atom
Answer: A
Description: The number of protons in the nucleus of an atom, atomic number nucleus में उपस्थित protons की संख्या होती है।

Q-1027 An object is thrown vertically upwards and rises to a height of 20 m, What was the velocity with which the object was thrown, Take g =10 m,s², किसी object को vertically upward फेंकने पर वह 20 m तक जाता है, प्रारंभिक velocity कितनी थी
A) 40 m,s
B) 30 m,s
C) 20 m,s
D) 10 m,s
Answer: C
Description: 20 m,s, v² = u² − 2gh में top पर v = 0 इसलिए u² = 2 × 10 × 20 = 400 और u = 20 m,s।

Q-1028 The principle of conservation of energy is applicable to ___________, conservation of energy principle किस पर लागू होता है
A) every chemical system only
B) every physical process in general
C) every mechanical system only
D) every electrical system exclusively
Answer: B
Description: every physical process in general, energy conservation का नियम सभी physical processes पर लागू होता है।

Q-1029 Which of the following performs the function of reflex action, reflex action का कार्य कौन करता है
A) Hypothalamus
B) Cranium
C) Spinal cord
D) Pituitary gland
Answer: C
Description: Spinal cord, reflex actions spinal cord द्वारा नियंत्रित होते हैं।

Q-1030 Which of the following equations of motion is independent of the final velocity of a particle, निम्नलिखित में से कौन-सा equation of motion final velocity पर निर्भर नहीं करता
A) s = ut + ½at²
B) v = ut + a
C) v = u + at
D) v² − u² = 2as
Answer: A
Description: s = ut + ½at², इस equation में final velocity v शामिल नहीं है।

Q-1031 Which statement best defines the term formula unit mass as used in the context of ionic compounds, ionic compounds में formula unit mass को कौन-सा statement सही define करता है
A) It is the product of the atomic masses of all elements in a compound
B) It is the sum of the atomic masses of all atoms present in a formula unit of an ionic compound
C) It is the mass of one mole of a molecular compound
D) It is the total number of atoms in a molecule of a covalent compound
Answer: B
Description: It is the sum of the atomic masses of all atoms present in a formula unit of an ionic compound, formula unit mass ionic compound के सभी atoms के atomic masses का योग होता है।

Q-1032 Which of the following muscular structures is or are responsible for modifying the curvature and thus changing the focal length of the fibrous jelly-like eye lens, eye lens की curvature और focal length बदलने के लिए कौन-सी muscular structure जिम्मेदार है
A) Iris
B) Pupil
C) Ciliary muscles
D) Retina
Answer: C
Description: Ciliary muscles, ciliary muscles eye lens की curvature बदलकर focal length adjust करती हैं।

Q-1033 A metallic conductor obeys Ohm’s law at room temperature, When the applied potential difference across it is increased from V to 2V and the temperature is kept constant the current through the conductor, एक metallic conductor Ohm’s law follow करता है, potential difference V से 2V करने पर current पर क्या प्रभाव पड़ेगा
A) More than doubles due to increased electron drift velocity
B) Remains unchanged because current depends only on resistance
C) Doubles because resistance is constant
D) Less than doubles due to heating effects
Answer: C
Description: Doubles because resistance is constant, Ohm’s law के अनुसार I ∝ V जब resistance constant हो।

Q-1034 Plastids are easily observed under a microscope because, plastids microscope में आसानी से क्यों दिखाई देते हैं
A) they contain DNA
B) they are very small
C) they are colourless
D) they are large and contain pigments
Answer: D
Description: they are large and contain pigments, plastids बड़े होते हैं और pigments होने के कारण आसानी से दिखाई देते हैं।

Q-1035 Which of the following generally forms the longest part of a neuron, neuron का सबसे लंबा भाग सामान्यतः कौन-सा होता है
A) Synapse
B) Axon
C) Nerve ending
D) Cell body
Answer: B
Description: Axon, axon neuron का सबसे लंबा हिस्सा होता है।

Q-1036 Formula unit mass is defined as, formula unit mass को कैसे define किया जाता है
A) the mass of one molecule
B) the atomic mass of the lightest element
C) the sum of atomic masses of all atoms in a formula unit of an ionic compound
D) the molecular mass of a compound
Answer: C
Description: the sum of atomic masses of all atoms in a formula unit of an ionic compound, formula unit mass ionic compound के सभी atoms के atomic masses का योग होता है।

Q-1037 Which structural feature contributes to the high reactivity of unsaturated organic compounds, unsaturated organic compounds की high reactivity का मुख्य कारण क्या है
A) Presence of halogen atoms attached to the carbon framework
B) Existence of double or triple bonds between carbon atoms
C) Total absence of hydrogen atoms within the compound molecule
D) Incomplete formation of the carbon atom backbone structure
Answer: B
Description: Existence of double or triple bonds between carbon atoms, double और triple bonds compounds को अधिक reactive बनाते हैं।

Q-1038 A convex mirror is generally used as a rear-view mirror in vehicles because it, convex mirror vehicles में rear-view mirror के रूप में क्यों उपयोग किया जाता है
A) Produces magnified images
B) Absorbs most of the light rays
C) Produces a wider field of view
D) Produces real and inverted images
Answer: C
Description: Produces a wider field of view, convex mirror बड़ा area दिखाता है इसलिए rear-view mirror के रूप में उपयोग होता है।

Q-1039 In a eukaryotic cell observed under a microscope the three main components visible are, microscope में दिखाई देने वाले eukaryotic cell के तीन मुख्य components कौन-से हैं
A) endoplasmic reticulum Golgi body and nucleoid
B) plasma membrane nucleus and cytoplasm
C) cell wall ribosome and vacuole
D) capsule nucleoid and cytoplasm
Answer: B
Description: plasma membrane nucleus and cytoplasm, eukaryotic cell के मुख्य visible parts plasma membrane nucleus और cytoplasm होते हैं।

Q-1040 Generally which of the following trophic levels have the least number of organisms, सामान्यतः किस trophic level में organisms की संख्या सबसे कम होती है
A) Primary consumers
B) Secondary consumers
C) Producers
D) Tertiary consumers
Answer: D
Description: Tertiary consumers, food chain में ऊपर जाने पर organisms की संख्या कम होती जाती है।

Q-1041 What is the atomic mass of Carbon-13 Isotope, Carbon-13 isotope का atomic mass कितना होता है
A) 12 amu
B) 11 amu
C) 14 amu
D) 13 amu
Answer: D
Description: 13 amu, isotope का atomic mass उसके mass number के बराबर होता है।

Q-1042 Leucoplasts have which of the following colours, leucoplasts का colour क्या होता है
A) White
B) Orange
C) Indigo
D) Purple
Answer: A
Description: White, leucoplasts colourless या white plastids होते हैं।

Q-1043 The magnification m produced by a lens is defined as the ratio of _____________, lens द्वारा उत्पन्न magnification m किस ratio को दर्शाता है
A) the focal length to the object distance
B) the object height to the image height
C) the object distance to the image distance
D) the image height to the object height
Answer: D
Description: the image height to the object height, magnification m = image height ÷ object height।

Q-1044 Which connective tissue smoothens bone surfaces at joints and is present in the ear and trachea, कौन-सा connective tissue joints पर bone surfaces को smooth बनाता है और ear तथा trachea में पाया जाता है
A) Adipose
B) Cartilage
C) Areolar
D) Ligament
Answer: B
Description: Cartilage, cartilage joints पर friction कम करता है और ear तथा trachea में पाया जाता है।

Q-1045 Which of the following is correct about force on a current-carrying conductor in a magnetic field, magnetic field में current carrying conductor पर लगने वाले force के बारे में कौन-सा statement सही है
A) The force depends on the resistance of the conductor
B) The force on a current carrying conductor is proportional to the length of the conductor in the magnetic field
C) The force on a conductor is along the magnetic field direction
D) The force is independent of the current in the conductor
Answer: B
Description: The force on a current carrying conductor is proportional to the length of the conductor in the magnetic field, magnetic force conductor की length और current पर निर्भर करता है।

Q-1046 A stethoscope helps a doctor hear a patient’s heartbeat clearly, Which principle does a stethoscope use for this purpose, stethoscope किस principle पर कार्य करता है
A) Refraction of sound
B) Diffraction of sound
C) Interference of sound
D) Multiple reflection of sound
Answer: D
Description: Multiple reflection of sound, stethoscope में sound multiple reflections द्वारा स्पष्ट सुनाई देती है।

Q-1047 Which of the following statements is or are true about the loudness and softness of a sound wave, sound wave की loudness और softness के बारे में कौन-से statements सही हैं, i A loud sound has less amplitude as compared to a soft sound, ii A loud sound has more energy associated with it as compared to a soft sound, iii The loudness of a sound wave is the measure of the response of the ear to the sound
A) Only iii
B) Both i and ii
C) Both ii and iii
D) Only i
Answer: C
Description: Both ii and iii, loud sound में अधिक energy होती है और loudness ear की response sensation को दर्शाती है।

Q-1048 What happens to the pH of a solution when the concentration of H⁺ ions increases, जब H⁺ ions की concentration बढ़ती है तो solution का pH क्या होता है
A) It decreases
B) It cannot be determined
C) It remains the same
D) It increases
Answer: A
Description: It decreases, H⁺ ion concentration बढ़ने पर pH कम हो जाता है।

Q-1049 To hear a distinct echo what should be the minimum time interval between the original sound and the reflected sound, distinct echo सुनने के लिए original sound और reflected sound के बीच minimum time interval कितना होना चाहिए
A) 0.2 s
B) 0.01 s
C) 1.0 s
D) 0.1 s
Answer: D
Description: 0.1 s, मानव कान लगभग 0.1 second के बाद आने वाली sound को अलग echo के रूप में सुन सकता है।

Q-1050 Which of the following statement s is or are true regarding a concave lens, concave lens के बारे में कौन-से statements सही हैं, i A concave lens is also called a diverging lens, ii A concave lens always forms a real and inverted image of the object placed anywhere in front of it, iii A concave lens always forms a virtual and erect image of the object placed anywhere in front of it
A) Both i and iii
B) Only iii
C) Both i and ii
D) Only ii
Answer: A
Description: Both i and iii, concave lens diverging lens होता है और हमेशा virtual erect image बनाता है।

 

Q-1051 If two daughter cells produced by cell division show minor differences in their structure which process during DNA copying most likely caused these variations, यदि cell division से बनी daughter cells में थोड़े differences हों तो DNA copying के दौरान इसका सबसे संभावित कारण क्या है
A) The separation of DNA copies into new cells is incomplete
B) The absence of DNA blueprints in the nucleus
C) Minor variations occur during DNA copying due to the inherent unreliability of biochemical reactions
D) Errors in protein synthesis after DNA copying
Answer: C
Description: Minor variations occur during DNA copying due to the inherent unreliability of biochemical reactions, DNA copying के दौरान छोटे variations प्राकृतिक रूप से हो सकते हैं।

Q-1052 The resistance of a wire is 1 Ω, If it is cut into two equal parts the resistance of each part will be, एक wire का resistance 1 Ω है, यदि उसे दो बराबर भागों में काट दिया जाए तो प्रत्येक भाग का resistance कितना होगा
A) 2 Ω
B) 0.5 Ω
C) 1 Ω
D) 4 Ω
Answer: B
Description: 0.5 Ω, resistance length के directly proportional होता है इसलिए length आधी होने पर resistance भी आधा हो जाता है।

Q-1053 What is the purpose of anodising aluminium metals, aluminium का anodising करने का उद्देश्य क्या है
A) To make it more reactive with air
B) To reduce its melting point
C) To increase its electrical conductivity
D) To form a protective oxide layer
Answer: D
Description: To form a protective oxide layer, anodising aluminium पर protective oxide layer बनाता है जो corrosion से बचाती है।

Q-1054 Which of the following statements is correct about the definition of complex permanent tissues, complex permanent tissues के बारे में कौन-सा statement सही है
A) Complex permanent tissues are made of simple permanent tissues
B) Complex permanent tissues are made up of different types of cells performing similar tasks
C) Complex permanent tissues are made up of different types of cells performing different tasks
D) Complex permanent tissues are made up of similar type of cells
Answer: C
Description: Complex permanent tissues are made up of different types of cells performing different tasks, complex tissues में विभिन्न प्रकार की cells मिलकर कार्य करती हैं।

Q-1055 Which of the following is an example of complex permanent tissue, निम्नलिखित में से कौन-सा complex permanent tissue का उदाहरण है
A) Collenchyma
B) Lateral meristem
C) Phloem
D) Aerenchyma
Answer: C
Description: Phloem, phloem complex permanent tissue है जो food transport का कार्य करता है।

Q-1056 Which of the following statements is true according to Thomson's Model of Atom, Thomson model के अनुसार कौन-सा statement सही है
A) Electrons are concentrated in the nucleus
B) Electrons are attached to neutrons
C) Electrons are spread randomly in a positively charged sphere
D) Electrons are fixed in the orbits
Answer: C
Description: Electrons are spread randomly in a positively charged sphere, Thomson model के अनुसार atom positively charged sphere होता है जिसमें electrons embedded रहते हैं।

Q-1057 Which of the following is a displacement reaction, निम्नलिखित में से कौन-सा displacement reaction है
A) CaCO₃ → CaO + CO₂
B) AgNO₃ + NaCl → AgCl + NaNO₃
C) NaOH + HCl → NaCl + H₂O
D) Zn + CuSO₄ → ZnSO₄ + Cu
Answer: D
Description: Zn + CuSO₄ → ZnSO₄ + Cu, इसमें zinc copper को उसके compound से displace करता है इसलिए यह displacement reaction है।

Q-1058 What is the main function of leucoplasts in plant cells, plant cells में leucoplasts का मुख्य कार्य क्या है
A) Breaking down waste materials
B) Absorbing sunlight
C) Storing materials like starch oils and proteins
D) Giving colour to flowers
Answer: C
Description: Storing materials like starch oils and proteins, leucoplasts food storage का कार्य करते हैं।

Q-1059 Which of the following organelles is the first to divide during binary fission in Amoeba, Amoeba में binary fission के दौरान सबसे पहले कौन-सा organelle divide होता है
A) Cytoplasm
B) Nucleus
C) Vacuole
D) Cell wall
Answer: B
Description: Nucleus, binary fission में सबसे पहले nucleus divide होता है।

Q-1060 What does the area under a velocity–time graph represent, velocity-time graph के नीचे का area क्या दर्शाता है
A) The speed of the object
B) The displacement of the object during that time interval
C) The acceleration of the object
D) The time taken by the object
Answer: B
Description: The displacement of the object during that time interval, velocity-time graph के नीचे का area displacement को दर्शाता है।

Q-1061 Which of the following statements is correct about the concept of molecules of compounds, molecules of compounds के बारे में कौन-सा statement सही है
A) A molecule of a compound is formed by the separation of atoms of the same element
B) A molecule of a compound is formed by the combination of atoms of different elements
C) A molecule of a compound is formed by the separation of atoms of different elements
D) A molecule of a compound is formed by the combination of atoms of the same element
Answer: B
Description: A molecule of a compound is formed by the combination of atoms of different elements, compounds विभिन्न elements के atoms से मिलकर बनते हैं।

Q-1062 Rutherford's gold foil experiment led to a major revision of the atomic model, Which of the following observations and conclusions is most accurate according to the experiment, Rutherford gold foil experiment के अनुसार कौन-सा observation और conclusion सही है
A) The majority of alpha particles passed through the foil undeflected indicating that atoms are mostly empty space
B) Alpha particles are deflected because they collide with electrons and spread uniformly throughout the atom
C) The nucleus is positively charged and occupies most of the volume of the atom
D) Electrons are present in the nucleus and account for the atom's mass
Answer: A
Description: The majority of alpha particles passed through the foil undeflected indicating that atoms are mostly empty space, Rutherford experiment से पता चला कि atom का अधिकांश भाग empty space होता है।

Q-1063 In the following reaction Fe + CuSO₄ → FeSO₄ + Cu iron, reaction Fe + CuSO₄ → FeSO₄ + Cu में iron क्या होता है
A) is oxidised
B) is unchanged
C) acts a catalyst
D) is reduced
Answer: A
Description: is oxidised, iron electrons खोकर Fe²⁺ बनता है इसलिए oxidation होता है।

Q-1064 The process of seed dispersal helps in, seed dispersal process किसमें सहायता करती है
A) promoting self-pollination
B) colonising new habitats
C) forming new flowers on the same plant
D) increasing seed size
Answer: B
Description: colonising new habitats, seed dispersal plants को नए स्थानों पर फैलने में मदद करता है।

Q-1065 If an object is placed at a distance u from a convex lens u ________, convex lens से object distance u को कैसे लिया जाता है
A) is taken as positive
B) is taken as zero
C) depends on the type of image
D) is taken as negative
Answer: D
Description: is taken as negative, Cartesian sign convention के अनुसार object distance हमेशा negative लिया जाता है।

Q-1066 Refer to the two statements given below and select the correct option, Statement A Ethanoic acid reacts with sodium hydroxide to form sodium acetate and water, Statement B This reaction is neutralisation
A) Statement A is correct but statement B is incorrect
B) Statement A is incorrect but statement B is correct
C) Both statements A and B are correct
D) Both statements A and B are incorrect
Answer: C
Description: Both statements A and B are correct, acid और base के reaction से salt और water बनते हैं इसलिए यह neutralisation reaction है।

Q-1067 Which of the following statements is NOT correct, निम्नलिखित में से कौन-सा statement सही नहीं है
A) Every object attracts every other object in the universe
B) Gravitational force is always attractive
C) Gravitational force is strongest among small bodies
D) The value of G is constant everywhere
Answer: C
Description: Gravitational force is strongest among small bodies, gravitational force masses के बढ़ने पर अधिक होती है।

Q-1068 During uniform motion of an object along a straight line __________, straight line में uniform motion के दौरान __________
A) The change in velocity over any time interval is non zero
B) The velocity changes continuously with time
C) The velocity has different values at different instants and at different points of the path
D) The change in velocity over any time interval is zero
Answer: D
Description: The change in velocity over any time interval is zero, uniform motion में velocity constant रहती है।

Q-1069 Which of the following is NOT an olfactory indicator, निम्नलिखित में से कौन-सा olfactory indicator नहीं है
A) Clove oil
B) Litmus
C) Onion
D) Vanilla
Answer: B
Description: Litmus, litmus एक colour indicator है जबकि clove oil onion और vanilla olfactory indicators हैं।

Q-1070 Which of the following statements is correct, निम्नलिखित में से कौन-सा statement सही है
A) High pitch means high frequency
B) High pitch means low frequency
C) Pitch has no relation with frequency
D) Low pitch means high frequency
Answer: A
Description: High pitch means high frequency, pitch frequency पर निर्भर करती है।

Q-1071 Why are sound waves classified as mechanical waves, sound waves को mechanical waves क्यों कहा जाता है
A) They do not require a medium to travel
B) They cause light oscillations
C) They oscillate perpendicular to wave propagation
D) They are characterised by the motion of particles in a medium
Answer: D
Description: They are characterised by the motion of particles in a medium, sound waves medium के particles की vibration द्वारा propagate करती हैं।

Q-1072 Which of the following animals produces infrasound, निम्नलिखित में से कौन-से animals infrasound produce करते हैं
A) Horses and cows
B) Whales and elephants
C) Birds and snakes
D) Dogs and cats
Answer: B
Description: Whales and elephants, whales और elephants low frequency infrasound उत्पन्न करते हैं।

Q-1073 When the frequency of vibration of a sound source increases the resulting sound will have _________, sound source की frequency बढ़ने पर sound में क्या परिवर्तन होगा
A) Higher pitch
B) Smaller amplitude
C) Greater loudness
D) Lower pitch
Answer: A
Description: Higher pitch, frequency बढ़ने पर sound की pitch बढ़ जाती है।

Q-1074 What is a colloidal solution, colloidal solution क्या होता है
A) Uniform mixture with large particles
B) Transparent mixture with gases only
C) Mixture in which particles fully dissolve and settle
D) Heterogeneous mixture with fine particles
Answer: D
Description: Heterogeneous mixture with fine particles, colloidal solution में छोटे particles dispersed रहते हैं और आसानी से settle नहीं होते।

Q-1075 Materials that have NOT been broken down by the action of bacteria or saprophytes but somehow degraded by physical processes are called, वे materials जो bacteria या saprophytes द्वारा break down नहीं होते लेकिन physical processes से degrade होते हैं उन्हें क्या कहते हैं
A) Dividable
B) Non-biodegradable
C) Decaying
D) Biodegradable
Answer: B
Description: Non-biodegradable, non-biodegradable substances microorganisms द्वारा आसानी से decompose नहीं होतीं।

 

Q-1076 A particle’s velocity-time graph is a straight line with a negative slope, What does this indicate about the particle’s motion, velocity-time graph में negative slope वाली straight line क्या दर्शाती है
A) The particle is moving with increasing acceleration
B) The particle is at rest
C) The particle is speeding up in the positive direction
D) The particle is slowing down if moving in the positive direction
Answer: D
Description: The particle is slowing down if moving in the positive direction, negative slope negative acceleration को दर्शाता है।

Q-1077 Which of the following statements about resistivity is correct, resistivity के बारे में कौन-सा statement सही है
A) It decreases when the length increases
B) It depends only on the nature and temperature of the material
C) It changes with the shape of the conductor
D) It increases with the cross-sectional area
Answer: B
Description: It depends only on the nature and temperature of the material, resistivity material और temperature पर निर्भर करती है।

Q-1078 Rabi crops are harvested in which season, Rabi crops किस season में harvest की जाती हैं
A) Monsoon
B) Summer
C) Winter
D) Autumn
Answer: B
Description: Summer, Rabi crops winter में बोई जाती हैं और summer season में काटी जाती हैं।

Q-1079 Which of the following statements is correct regarding the female reproductive system, female reproductive system के बारे में कौन-सा statement सही है
A) The fallopian tubes carry the egg from the ovary to the uterus
B) The uterus produces eggs that travel through the vagina
C) The cervix connects the ovaries to the uterus
D) A girl starts producing eggs only after she reaches puberty
Answer: A
Description: The fallopian tubes carry the egg from the ovary to the uterus, fallopian tubes ovary से egg को uterus तक ले जाती हैं।

Q-1080 Which statement best supports the Law of Constant Proportions, कौन-सा statement Law of Constant Proportions को support करता है
A) Mud from two ponds containing different minerals
B) Sand from two places with varying grain size
C) Soil from two areas with mixed organic content
D) Water from two sources with identical composition
Answer: D
Description: Water from two sources with identical composition, law of constant proportions के अनुसार किसी compound में elements हमेशा निश्चित अनुपात में होते हैं।

Q-1081 How are ionic compounds formed between metals and non-metals, metals और non-metals के बीच ionic compounds कैसे बनते हैं
A) By mutual attraction between positively charged nuclei
B) By transfer of electrons from metal atoms to non-metal atoms
C) By the formation of a sea of delocalised electrons
D) By sharing of electrons between atoms
Answer: B
Description: By transfer of electrons from metal atoms to non-metal atoms, ionic bond electron transfer द्वारा बनता है।

Q-1082 Which of the following best explains the liquefaction of gases under high pressure, high pressure पर gases के liquefaction को कौन-सा statement सबसे अच्छी तरह explain करता है
A) Higher pressure reduces the space between particles leading to liquefaction
B) Increased molecular size leads to condensation
C) Gases expand indefinitely so pressure has no effect
D) Higher pressure increases temperature leading to phase change
Answer: A
Description: Higher pressure reduces the space between particles leading to liquefaction, pressure बढ़ने पर gas particles पास आ जाते हैं और liquid बन सकते हैं।

Q-1083 What is the role of sulphuric acid in the anodising process of aluminium, aluminium के anodising process में sulphuric acid का क्या role होता है
A) It acts as an electrolyte to help form a thicker oxide layer
B) It prevents oxidation of aluminium
C) It reacts with aluminium to form aluminium chloride
D) It dissolves aluminium completely
Answer: A
Description: It acts as an electrolyte to help form a thicker oxide layer, sulphuric acid anodising में electrolyte का कार्य करता है।

Q-1084 Which of the following living organisms have bones that help in body movements, निम्नलिखित में से किस जीव में body movement के लिए bones होती हैं
A) Earthworm
B) Cockroach
C) Snake
D) Snail
Answer: C
Description: Snake, snake vertebrate animal है जिसमें bones body movement में सहायता करती हैं।

Q-1085 What was Mendel’s contribution to genetics, genetics में Mendel का क्या योगदान था
A) Theory of Evolution
B) Discovery of DNA
C) Laws of Inheritance
D) Inheritance of Acquired Traits
Answer: C
Description: Laws of Inheritance, Mendel ने inheritance के laws दिए थे।

Q-1086 Where is a reflex arc formed in the body, body में reflex arc कहाँ बनता है
A) Spinal cord
B) Muscle
C) Fore brain
D) Hind brain
Answer: A
Description: Spinal cord, reflex arc spinal cord में बनता है।

Q-1087 Which of the following conditions will most effectively accelerate the corrosion of iron, निम्नलिखित में से कौन-सी condition iron के corrosion को सबसे अधिक तेज करेगी
A) Iron surface in dry air with no impurities
B) Iron coated with a thin layer of zinc galvanization
C) Iron surface exposed to moist air containing dissolved salts
D) Iron immersed in pure water free of dissolved oxygen
Answer: C
Description: Iron surface exposed to moist air containing dissolved salts, moisture और salts corrosion को तेज करते हैं।

Q-1088 Phosphoric acid H₃PO₄ is composed of which of the following ions, phosphoric acid H₃PO₄ किन ions से बना होता है
A) H⁺ PO₄²⁻
B) H⁺ PO₄⁴⁻
C) H²⁺ PO₄³⁻
D) H⁺ PO₄³⁻
Answer: D
Description: H⁺ PO₄³⁻, phosphoric acid hydrogen ion और phosphate ion से संबंधित होता है।

Q-1089 What is the chemical reaction involved in the preparation of Plaster of Paris from gypsum, gypsum से Plaster of Paris बनाने की chemical reaction कौन-सी है
A) CaSO₄·2H₂O + heat → CaSO₄ + 2H₂O
B) CaCO₃ + heat → CaO + CO₂
C) CaSO₄·½H₂O + water → CaSO₄·2H₂O
D) CaSO₄·2H₂O + heat → CaSO₄·½H₂O + 1½H₂O
Answer: D
Description: CaSO₄·2H₂O + heat → CaSO₄·½H₂O + 1½H₂O, gypsum को heat करने पर Plaster of Paris बनता है।

Q-1090 Three rays of light parallel and close to the principal axis are incident on a convex lens these rays will converge at which point after passing through the lens, convex lens पर principal axis के parallel rays पड़ने पर वे कहाँ converge करती हैं
A) At any point beyond the focus
B) At the focus of the lens
C) At any point between the optical centre and the focus
D) At the optical centre
Answer: B
Description: At the focus of the lens, convex lens parallel rays को principal focus पर converge करता है।

Q-1091 During non-uniform motion of an object along a straight line _______, straight line में non-uniform motion के दौरान _______
A) the change in velocity over any time interval is non zero
B) the velocity remains constant with time
C) the change in velocity over any time interval is zero
D) the velocity has same values at different points of the path
Answer: A
Description: the change in velocity over any time interval is non zero, non-uniform motion में velocity लगातार बदलती रहती है।

Q-1092 Read the following statements carefully and select the correct option, Assertion A Decomposition reactions require energy in the form of heat light or electricity, Reason R Energy is absorbed to break down reactant molecules into simpler products
A) Both A and R are true and R is not the correct explanation of A
B) A is true but R is false
C) Both A and R are true and R is the correct explanation of A
D) A is false but R is true
Answer: C
Description: Both A and R are true and R is the correct explanation of A, decomposition reactions में reactants को simpler products में तोड़ने के लिए energy absorb होती है।

Q-1093 Which of the following steps can increase the expected yield of a crop, निम्नलिखित में से कौन-सा step crop की expected yield बढ़ा सकता है
A) Irrigation at early stages of crop
B) Irrigation at right stage of crop
C) Irrigation at every stage of crop
D) Irrigation at terminal stage of crop
Answer: B
Description: Irrigation at right stage of crop, सही समय पर irrigation करने से crop yield बेहतर होती है।

Q-1094 Select the option that is true regarding the following two statements labelled Assertion A and Reason R, Assertion A Sexual reproduction is essential in plants for maintaining the continuity of the species for many generations, Reason R Sexual reproduction leads to genetic variation that enhances adaptability and evolutionary fitness
A) Assertion A is false but Reason R is true
B) Both Assertion A and Reason R are true but R is NOT the correct explanation of Assertion A
C) Both Assertion A and Reason R are true and R is the correct explanation of Assertion A
D) Assertion A is true but Reason R is false
Answer: C
Description: Both Assertion A and Reason R are true and R is the correct explanation of Assertion A, sexual reproduction genetic variation उत्पन्न करता है जिससे species की continuity और adaptability बनी रहती है।

Q-1095 The total resistance of 5 resistors of equal resistance R arranged in a parallel arrangement is __________, समान resistance R वाले 5 resistors को parallel में जोड़ने पर total resistance कितना होगा
A) R,5
B) 5,R
C) 5R
D) R⁵
Answer: A
Description: R,5, समान resistors के parallel combination में equivalent resistance R,n होता है।

Q-1096 In eukaryotic cells the smooth endoplasmic reticulum is mainly responsible for, eukaryotic cells में smooth endoplasmic reticulum का मुख्य कार्य क्या है
A) Protein synthesis
B) Sugar breakdown
C) Genetic information storage
D) Lipid synthesis and detoxification
Answer: D
Description: Lipid synthesis and detoxification, smooth ER lipids बनाता है और harmful substances का detoxification करता है।

 

1097.) 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 2
B. Only statement 1
C. Neither statement 1 nor 2
D. Both statement 1 and 2

Answer: D. Both statement 1 and 2

Description:
यह घटना प्रकाश के अपवर्तन (Refraction of Light) के कारण होती है। अपवर्तन के नियम के अनुसार incident ray, refracted ray और normal हमेशा एक ही plane में होते हैं तथा Snell’s Law के अनुसार
sin⁡isin⁡r\dfrac{\sin i}{\sin r} का मान constant रहता है। इसलिए दोनों statements सही हैं।

1098.) An electric bulb is connected to a 240 V generator and draws a current of 0.25 A. What is the power consumed by the bulb?

A. 60 W
B. 960 W
C. 960 J
D. 60 J

Answer: A. 60 W

Description:
विद्युत शक्ति ज्ञात करने का सूत्र:

P=VI=240×0.25=60 WP = VI = 240 \times 0.25 = 60\,W

अतः बल्ब द्वारा consumed power = 60 W होगी।

1099.) What gas is typically released when ethanoic acid reacts with sodium carbonate?

A. Oxygen gas
B. Methane gas
C. Carbon dioxide gas
D. Hydrogen gas

Answer: C. Carbon dioxide gas

Description:
जब ethanoic acid, sodium carbonate के साथ अभिक्रिया करता है तब carbon dioxide गैस निकलती है।

Reaction:
CH₃COOH + Na₂CO₃ → CH₃COONa + H₂O + CO₂

इसलिए सही उत्तर Carbon dioxide gas है।

1100.) Which part of the brain controls involuntary actions such as blood pressure, salivation, and vomiting?

A. Medulla oblongata
B. Cerebellum
C. Thalamus
D. Cerebrum

Answer: A. Medulla oblongata

Description:
Medulla oblongata मस्तिष्क का वह भाग है जो involuntary actions जैसे blood pressure, heartbeat, salivation, breathing तथा vomiting को नियंत्रित करता है। इसलिए सही उत्तर Medulla oblongata है।

 

 

  

Quiz 01: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 001 to 100Q 
Quiz 02: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 101 to 200Q
Quiz 03: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 201 to 300Q
Quiz 04: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 301 to 400Q
Quiz 05: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 401 to 500Q
Quiz 06: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 501 to 600Q
Quiz 07: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 601 to 700Q
Quiz 08: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 701 to 800Q
Quiz 09: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 801 to 900Q
Quiz 10: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 901 to 1000Q
Quiz 11: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 1001 - 1100Q
Quiz 12: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 1101 - 1200Q
Quiz 13: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 1201 - 1300Q
Quiz 14: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 1301 - 1400Q
Quiz 15: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 1401 - 1500Q
Quiz 16: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 1501 - 1600Q
Quiz 17: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 1601 - 1700Q
Quiz 18: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 1701 - 1800Q
Quiz 19: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 1801 - 1900Q
Quiz 20: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 1901 - 2000Q
Quiz 21: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 2001 - 2100Q
Quiz 22: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 2101 - 2200Q
Quiz 23: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 2201 - 2300Q
Quiz 24: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 2301 - 2400Q
Quiz 25: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 2401 - 2500Q
Quiz 26: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 2501 - 2600Q
Quiz 27: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 2601 - 2700Q
Quiz 28: RRB GROUP-D LEVEL-1 2025-26 CBT GENERAL SCIENCE (LINK) 2701 - 2800Q 

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