Science is one of the most important and scoring sections in the RRB Technician exam. The questions are mainly based on everyday science concepts that you have already studied in school, especially from Physics, Chemistry, and Biology (up to Class 10 level). The purpose of this section is not to test difficult theories, but to check how well you understand basic scientific principles and their practical applications in daily life and railway-related work. RRB Technician Science Questions usually focus on fundamental concepts, such as motion, electricity, heat, acids and bases, metals and non-metals, human body systems, diseases, nutrition, and more.
Download Top RRB Technician Science Questions PDF
We have provided a free PDF to download below for the top RRB Technician Science Questions. Download the free PDF to know the difficulty level of the questions asked.
Practice the RRB Technician Science Questions (Live)
Given below are the top RRB Technician Science questions for practice. Attempt them live and check your score as per the real exam marking scheme. You will get +2 for every correct answer, – 0.5 for every wrong answer, and 0 for unattempted questions.
Q.1 Which of the following is a vector quantity?
- Speed
- Mass
- Velocity
- Temperature
Ans: 3. Velocity
Q.2 A body is thrown vertically upward with a velocity of 20 m/s. What is the maximum height reached? (g = 10 m/s²)
- 10 m
- 20 m
- 30 m
- 40 m
Ans: 2. 20 m
Q.3 Which law states that the rate of change of momentum of a body is directly proportional to the applied force?
- Newton’s First Law
- Newton’s Second Law
- Newton’s Third Law
- Law of Conservation of Energy
Ans: 2. Newton’s Second Law
Q.4 The SI unit of pressure is:
- Newton
- Joule
- Pascal
- Watt
Ans: 3. Pascal
Q.5 A 10 kg object moving at 5 m/s has a kinetic energy of:
- 50 J
- 125 J
- 250 J
- 500 J
Ans: 2. 125 J
Q.6 Which type of wave requires a medium to travel?
- Electromagnetic wave
- Light wave
- Mechanical wave
- Radio wave
Ans: 3. Mechanical wave
Q.7 The phenomenon of splitting of white light into its constituent colours is called:
- Reflection
- Refraction
- Dispersion
- Diffraction
Ans: 3. Dispersion
Q.8 A body of mass 5 kg is placed on a surface. If the coefficient of static friction is 0.4, what is the maximum static friction force? (g = 10 m/s²)
- 10 N
- 20 N
- 30 N
- 40 N
Ans: 2. 20 N
Q.9 The period of a simple pendulum depends on:
- Mass of the bob
- Length of the pendulum
- Amplitude of oscillation
- Material of the string
Ans: 2. Length of the pendulum
Q.10 Which of the following is an example of uniform circular motion?
- A ball thrown horizontally
- A satellite in circular orbit
- A freely falling object
- A car braking on a straight road
Ans: 2. A satellite in circular orbit
Q.11 The unit of power in SI system is:
- Joule
- Newton
- Watt
- Ampere
Ans: 3. Watt
Q.12 When a spring with spring constant k = 200 N/m is compressed by 0.05 m, the potential energy stored is:
- 0.125 J
- 0.25 J
- 0.5 J
- 1.0 J
Ans: 2. 0.25 J
Q.13 The gravitational force between two objects is inversely proportional to the:
- Sum of their masses
- Product of their masses
- Square of the distance between them
- Cube of the distance between them
Ans: 3. Square of the distance between them
Q.14 Which of the following has the highest frequency?
- Radio waves
- Infrared rays
- X-rays
- Microwaves
Ans: 3. X-rays
Q.15 The angle of incidence equals the angle of reflection. This is the law of:
- Refraction
- Reflection
- Diffraction
- Dispersion
Ans: 2. Reflection
Q.16 Ohm’s law states that current through a conductor is proportional to the voltage across it, provided:
- Temperature is variable
- Temperature remains constant
- Resistance changes with temperature
- Voltage is zero
Ans: 2. Temperature remains constant
Q.17 Three resistors of 3Ω, 6Ω, and 9Ω are connected in parallel. The equivalent resistance is approximately:
- 18 Ω
- 1.64 Ω
- 6 Ω
- 3 Ω
Ans: 2. 1.64 Ω
Q.18 The magnetic field inside a solenoid is:
- Zero
- Non-uniform
- Uniform and parallel to the axis
- Perpendicular to the axis
Ans: 3. Uniform and parallel to the axis
Q.19 Which of the following is the correct formula for electrical power?
- P = V/I
- P = VI
- P = V + I
- P = V − I
Ans: 2. P = VI
Q.20 A capacitor of 10 µF is charged to 100 V. The energy stored in it is:
- 0.05 J
- 0.5 J
- 5 J
- 50 J
Ans: 1. 0.05 J
Q.21 Lenz’s law is a consequence of the law of conservation of:
- Charge
- Momentum
- Energy
- Mass
Ans: 3. Energy
Q.22 The time constant of an RC circuit is given by:
- R/C
- RC
- R + C
- R × C²
Ans: 2. RC
Q.23 In a purely inductive AC circuit, the current:
- Leads voltage by 90°
- Lags voltage by 90°
- Is in phase with voltage
- Lags voltage by 45°
Ans: 2. Lags voltage by 90°
Q.24 Which device converts AC to DC?
- Transformer
- Oscillator
- Rectifier
- Amplifier
Ans: 3. Rectifier
Q.25 The resonant frequency of a series RLC circuit with L = 1 H and C = 1 µF is approximately:
- 159 Hz
- 1000 Hz
- 500 Hz
- 250 Hz
Ans: 1. 159 Hz
Q.26 In a common emitter BJT amplifier, the voltage gain is approximately:
- Always less than 1
- Always equal to 1
- Greater than 1
- Zero
Ans: 3. Greater than 1
Q.27 The n-type semiconductor is formed by doping silicon with:
- Boron
- Gallium
- Indium
- Phosphorus
Ans: 4. Phosphorus
Q.28 The forward voltage drop across a silicon diode is approximately:
- 0.3 V
- 0.7 V
- 1.2 V
- 1.5 V
Ans: 2. 0.7 V
Q.29 A Zener diode is primarily used for:
- Amplification
- Rectification
- Voltage regulation
- Oscillation
Ans: 3. Voltage regulation
Q.30 In a FET, the current is controlled by:
- Base current
- Collector voltage
- Gate voltage
- Emitter current
Ans: 3. Gate voltage
What is the importance of Science Questions in RRB Technician 2026?
The main importance of science questions in the RRB Technician Exam Pattern is that they are often straightforward and involve high scoring potential. Given below are the details:
- Scoring Potential: Science questions are often straightforward, and scoring is based on candidates who revise concepts properly. It is also recommended to download an RRB Technician Science Questions PDF for last-minute revision.
- Conceptual Understanding: Many technical questions require basic science knowledge.
- Time Management: Science questions can be solved quickly, saving time for more challenging technical questions.
- Weightage: Usually, 15–20% of the CBT paper includes general science questions.
What are the High-Yield Science Topics for RRB Technician 2026?
The high-yielding science topics for science in RRB Technician Syllabus include Newton’s laws, electricity, atomic structure, human anatomy, and more. Given below are the details:
- Physics: Newton’s laws, electricity, magnetism, optics, work-energy-power.
- Chemistry: Atomic structure, chemical bonding, acids and bases, metallurgy, and everyday chemistry.
- Biology: Human anatomy, plant physiology, microbiology, genetics, and diseases.
What tips should I follow for RRB Technician Science section?
Candidates must focus on fundamentals, solve previous year question papers, practice MCQs daily to answer the science section properly. Check them different preparation tips shared below:
- Focus on Fundamentals: Many questions are based on 10th and 12th-standard science.
- Use Diagrams and Charts: Memorising diagrams helps in understanding complex topics.
- Solve Previous Year Papers: Helps identify recurring questions and patterns.
- Practice MCQs Daily: 10–15 questions per section each day keep concepts fresh.
- Time Yourself: Science questions are meant to be quick; practice solving them in 15–20 seconds per question.
FAQs
On average, 15–20% of the CBT paper consists of general science questions, which means around 20–25 questions can be expected in the exam
The questions are mostly from Physics, Chemistry, and Biology (10th–12th level NCERT). Key areas include mechanics, electricity, optics, acids-bases, periodic table, human anatomy, plant physiology, and genetics.
Most science questions are easy to moderate in difficulty. Candidates who revise NCERT basics and previous year RRB Technician papers can solve them quickly.
Revise class 10th and 12th science NCERTs.
Practice previous year RRB Technician questions.
Take daily quizzes of 10–15 science MCQs.
Focus more on Physics and Biology, as they carry higher weightage.
Yes, many questions are repeated with slight variations. Topics like Newton’s Laws, Ohm’s Law, photosynthesis, acids-bases, and human body systems appear frequently across different RRB Technician exams.
Hello! This is Arijit Dutta. I am a skilled Content Writer at Oliveboard with nearly 3+ years of experience in crafting engaging, informative, and exam-focused content for the Railways Domain. With a strong command of language and a keen understanding of learner needs, I contribute significantly to Oliveboard’s mission of delivering high-quality educational resources. Passionate about clear communication and continuous learning, I consistently create content that helps government job aspirants achieve their goals. Outside of work, I enjoy playing cricket and listening to music, which helps me stay balanced and creative in my professional journey.
