General Science Questions in RRB NTPC Exam: General Science is an important part of the RRB NTPC General Awareness section and covers basic concepts from Physics, Chemistry, and Life Science. Practising previous year and exam-level questions can help candidates understand the type of questions asked, revise important concepts, and improve accuracy. In this article, we have compiled 100 important General Science questions for RRB NTPC, arranged topic-wise to support focused practice and quick revision.
Download RRB General Science Questions PDF
Download the free RRB General Science Questions PDF given below and start practising important questions for Railway exams. The PDF will help you understand the question pattern, difficulty level, and commonly tested General Science topics.
Practice RRB NTPC General Science Questions (Live)
Given below are some important General Science questions for the RRB NTPC Exam. Attempt them live to test your preparation, improve accuracy, and understand the type of Science questions asked in the General Awareness section.
1. Which part of the human brain regulates breathing and heartbeat?
2. Which vitamin deficiency leads to Pernicious anaemia?
3. What is the functional unit of the kidney called?
4. Which gas is mainly responsible for acid rain?
5. The SI unit of electric capacitance is:
6. Which blood group is called the universal donor?
7. Which metal has the highest electrical conductivity at room temperature?
8. The phenomenon responsible for mirage formation is:
9. Which hormone regulates blood calcium levels?
10. Which type of bond is formed by sharing of electrons?
11. The device used to convert AC to DC is called:
12. Which disease is caused by deficiency of iodine?
13. What is the pH value of pure water at 25°C?
14. Which part of the eye controls the amount of light entering?
15. Which gas is released during photosynthesis?
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Importance of General Science in RRB NTPC Exam
The General Science section carries 25%-30% weightage of marks in CBT 1. Candidates will have high potential for scoring if prepared with the right approach. The nature of questions as per the RRB NTPC Exam Pattern includes:
- Mostly Class 6-10 NCERT-level concepts.
- Covers Physics, Chemistry, and Biology.
- Balanced mix of static facts and application-based basics.
Topic-Wise Distribution of General Science Questions
We have given below the subject-wise topics relevant for the RRB NTPC Exam. Check out the details given below:
| Subject | Approximate Weightage | Commonly Asked Topics |
| Physics | 30–35 questions | Motion, Work & Energy, Light, Electricity, Heat |
| Chemistry | 30–35 questions | Atomic structure, Periodic table, Everyday chemistry, Acids & bases |
| Biology | 30–35 questions | Human body, Diseases, Plants, Nutrition, Genetics |
Top 100 General Science Questions in RRB NTPC Exam
The list below shows the most common General Science Questions that candidates must check to score above the RRB NTPC Cut Off in 2026. The section-wise sample questions are given below:
Physics (Selected 35 Questions)
- SI unit of force? — Newton
- Device used to measure current? — Ammeter
- Which mirror is used in vehicles as rear-view mirrors? — Convex mirror
- Speed of light in vacuum? — 3 × 10⁸ m/s
- SI unit of pressure? — Pascal
- Energy stored in a body due to its position? — Potential energy
- Lens used to correct myopia? — Concave lens
- Frequency range of audible sound for humans? — 20 Hz – 20 kHz
- Which law explains action and reaction? — Newton’s Third Law
- The rate of change of momentum is called? — Force
- SI unit of electric charge? — Coulomb
- What is Ohm’s law formula? — V = IR
- Instrument used to measure atmospheric pressure? — Barometer
- Which type of lens is used in magnifying glass? — Convex lens
- Which metal is best conductor of electricity? — Silver
- Sound cannot travel through? — Vacuum
- Unit of power? — Watt
- What is the unit of frequency? — Hertz
- Heat transfer in solids takes place by? — Conduction
- SI unit of work? — Joule
- What type of mirror is used by dentists? — Concave mirror
- Who discovered X-rays? — Wilhelm Roentgen
- Device used to measure humidity? — Hygrometer
- SI unit of magnetic field? — Tesla
- Example of a non-renewable source of energy? — Coal
- Which law of motion explains inertia? — Newton’s First Law
- What is the value of acceleration due to gravity on Earth? — 9.8 m/s²
- Unit of electric resistance? — Ohm
- Device used to convert AC to DC? — Rectifier
- Example of scalar quantity? — Mass
- Who invented the electric bulb? — Thomas Edison
- SI unit of luminous intensity? — Candela
- Which colour of light has the shortest wavelength? — Violet
- What is measured in decibels? — Sound intensity
- Which phenomenon causes rainbow formation? — Dispersion of light
Chemistry (Selected 35 Questions)
- Atomic number of Oxygen? — 8
- Chemical name of washing soda? — Sodium carbonate (Na₂CO₃)
- Which gas is used in fire extinguishers? — Carbon dioxide
- Chemical symbol of Gold? — Au
- The pH of neutral solution? — 7
- Which acid is present in lemon? — Citric acid
- First element of the periodic table? — Hydrogen
- Which gas is known as laughing gas? — Nitrous oxide (N₂O)
- Process of conversion of solid directly into gas? — Sublimation
- Example of noble gas? — Neon
- Which acid is used in batteries? — Sulphuric acid
- Common name of CaOCl₂? — Bleaching powder
- Atomic number of Carbon? — 6
- Rusting of iron is an example of? — Oxidation
- Chemical formula of quick lime? — CaO
- Who proposed atomic theory? — John Dalton
- Chemical formula of common salt? — NaCl
- Chemical name of vinegar? — Acetic acid
- Chemical symbol of Mercury? — Hg
- First man-made element? — Technetium
- Which vitamin is also known as ascorbic acid? — Vitamin C
- Chemical used for preservation of food? — Sodium benzoate
- Which allotrope of carbon is used in pencils? — Graphite
- Element required for photosynthesis? — Magnesium (in chlorophyll)
- Which gas turns lime water milky? — Carbon dioxide
- Chemical name of baking soda? — Sodium bicarbonate (NaHCO₃)
- Which metal reacts with water at room temperature? — Sodium
- Which acid is present in ant sting? — Formic acid
- Who discovered electron? — J. J. Thomson
- Which gas is called marsh gas? — Methane (CH₄)
- Alloy of copper and zinc? — Brass
- Which part of the atom carries positive charge? — Proton
- Chemical formula of gypsum? — CaSO₄·2H₂O
- Gas responsible for global warming? — Carbon dioxide
Biology (Selected 30 Questions)
- Basic unit of life? — Cell
- Powerhouse of the cell? — Mitochondria
- Which vitamin is produced in human skin by sunlight? — Vitamin D
- Largest gland in human body? — Liver
- Which organ purifies blood in humans? — Kidney
- Name of blood cells that fight infection? — White Blood Cells (WBCs)
- Which pigment gives green colour to plants? — Chlorophyll
- Father of genetics? — Gregor Mendel
- Which blood group is universal donor? — O negative
- Smallest bone in human body? — Stapes (in ear)
- Process by which plants prepare food? — Photosynthesis
- Disease caused by deficiency of Vitamin C? — Scurvy
- Disease caused by Plasmodium? — Malaria
- Hormone regulating blood sugar level? — Insulin
- Largest organ of human body? — Skin
- Part of brain controlling balance? — Cerebellum
- Protein-digesting enzyme in stomach? — Pepsin
- Which gas is released during photosynthesis? — Oxygen
- Which organelle is called the ‘suicidal bag’? — Lysosome
- Plants that prepare their own food? — Autotrophs
- Example of communicable disease? — Tuberculosis
- Which vitamin helps in blood clotting? — Vitamin K
- Which part of the plant conducts food? — Phloem
- Which is the largest mammal? — Blue Whale
- Human blood is red due to presence of? — Haemoglobin
- Which type of blood cells carry oxygen? — Red Blood Cells (RBCs)
- Deficiency of iodine causes? — Goitre
- The functional unit of kidney? — Nephron
- Plants that trap insects for food? — Insectivorous plants
- Which vitamin is fat-soluble? — Vitamin A, D, E, K
FAQs
The important sections in RRB NTPC General Science are Physics, Chemistry, and Biology.
There are approximately 30–35 questions from the Physics section.
Yes, it is recommended to attempt mock tests regularly for the RRB NTPC exam.
The commonly asked topics from chemistry include Atomic structure, Periodic table, Everyday chemistry, Acids & bases
The approximate weightage of biology is 30–35 questions.
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