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Introduction
Welcome to the ultimate collection of science and technology GK bits, meticulously crafted to boost your general knowledge for competitive exams like UPSC, SSC, Banking, Railways, and more. These concise one-liner questions and answers cover physics, chemistry, biology, computer science, and recent technological advancements, making them an invaluable resource for students and aspirants. Whether you’re preparing for a government job or a school quiz, these science and technology GK bits will help you ace the general awareness section with ease.
Science and Technology GK Bits: One-Liner Questions and Answers
- Who is known as the father of modern physics?
Answer: Albert Einstein. - What is the SI unit of force?
Answer: Newton. - Which gas is most abundant in Earth’s atmosphere?
Answer: Nitrogen. - What is the chemical symbol for gold?
Answer: Au. - Who discovered the theory of relativity?
Answer: Albert Einstein. - What is the primary source of energy for Earth’s climate system?
Answer: Sun. - Which planet is known as the Red Planet?
Answer: Mars. - What is the main component of natural gas?
Answer: Methane. - Who invented the telephone?
Answer: Alexander Graham Bell. - What does CPU stand for in computers?
Answer: Central Processing Unit. - Which element is essential for human blood production?
Answer: Iron. - What is the speed of light in a vacuum?
Answer: 299,792,458 meters per second. - Which scientist discovered penicillin?
Answer: Alexander Fleming. - What is the chemical formula for water?
Answer: H₂O. - Which device converts electrical energy into mechanical energy?
Answer: Electric motor. - What is the powerhouse of the cell?
Answer: Mitochondria. - Which gas is used in balloons to make them float?
Answer: Helium. - Who developed the first successful polio vaccine?
Answer: Jonas Salk. - What does DNA stand for?
Answer: Deoxyribonucleic Acid. - Which planet has the most moons in our solar system?
Answer: Jupiter. - What is the main source of energy for a laptop?
Answer: Battery. - Which element has the atomic number 1?
Answer: Hydrogen. - Who proposed the heliocentric model of the solar system?
Answer: Nicolaus Copernicus. - What is the unit of electric current?
Answer: Ampere. - Which gas is responsible for the greenhouse effect?
Answer: Carbon dioxide. - What is the hardest naturally occurring substance?
Answer: Diamond. - Who invented the World Wide Web?
Answer: Tim Berners-Lee. - What is the primary function of the ribosomes in a cell?
Answer: Protein synthesis. - Which scientist is credited with discovering gravity?
Answer: Isaac Newton. - What does RAM stand for in computers?
Answer: Random Access Memory. - Which metal is liquid at room temperature?
Answer: Mercury. - What is the main source of energy for Earth’s climate?
Answer: Solar radiation. - Who discovered radioactivity?
Answer: Henri Becquerel. - What is the chemical formula for table salt?
Answer: NaCl. - Which device measures atmospheric pressure?
Answer: Barometer. - What is the largest organ in the human body?
Answer: Skin. - Which gas is used in electric bulbs to prevent filament burning?
Answer: Argon. - Who is known as the father of computer science?
Answer: Charles Babbage. - What is the boiling point of water at standard atmospheric pressure?
Answer: 100°C. - Which planet is closest to the Sun?
Answer: Mercury. - What is the primary source of energy for photosynthesis?
Answer: Sunlight. - Which scientist formulated the laws of motion?
Answer: Isaac Newton. - What does USB stand for in technology?
Answer: Universal Serial Bus. - Which element is used in pencil lead?
Answer: Graphite. - What is the main function of the human heart?
Answer: Pumping blood. - Which gas, discovered on the sun before Earth, is the second most abundant element in the universe?
Answer: Helium. - Who invented the steam engine?
Answer: James Watt. - What is the SI unit of power?
Answer: Watt. - Which part of the plant conducts photosynthesis?
Answer: Leaf. - What does LED stand for in electronics?
Answer: Light Emitting Diode. - Which scientist discovered the electron?
Answer: J.J. Thomson. - What is the chemical formula for ozone?
Answer: O₃. - Which device converts sound waves into electrical signals?
Answer: Microphone. - What is the smallest unit of life?
Answer: Cell. - Which planet is known as the Gas Giant?
Answer: Jupiter. - What is the primary source of energy for Earth’s core?
Answer: Radioactive decay. - Who developed the theory of evolution by natural selection?
Answer: Charles Darwin. - What is the chemical symbol for oxygen?
Answer: O. - Which technology is used for wireless communication in mobile phones?
Answer: Cellular network. - What is the main component of the Sun?
Answer: Hydrogen. - Who invented the light bulb?
Answer: Thomas Edison. - What is the SI unit of energy?
Answer: Joule. - Which organ in the human body filters blood?
Answer: Kidney. - What does GPS stand for?
Answer: Global Positioning System. - Which element is used in nuclear reactors as fuel?
Answer: Uranium. - What is the process by which plants make their food?
Answer: Photosynthesis. - Who discovered the laws of planetary motion?
Answer: Johannes Kepler. - What is the chemical formula for carbon dioxide?
Answer: CO₂. - Which device is used to measure temperature?
Answer: Thermometer. - What is the largest bone in the human body?
Answer: Femur. - Which gas is essential for human respiration?
Answer: Oxygen. - Who is known as the father of genetics?
Answer: Gregor Mendel. - What is the SI unit of frequency?
Answer: Hertz. - Which planet has a prominent ring system?
Answer: Saturn. - What does HTML stand for in web development?
Answer: HyperText Markup Language. - Which element is the most abundant in the Earth’s crust?
Answer: Oxygen. - Who invented the first practical airplane?
Answer: Wright Brothers. - What is the chemical formula for ammonia?
Answer: NH₃. - Which device measures electric potential difference?
Answer: Voltmeter. - What is the primary source of energy for Earth’s magnetic field?
Answer: Molten iron in the outer core. - Which scientist discovered X-rays?
Answer: Wilhelm Röntgen. - What is the main function of red blood cells?
Answer: Transport oxygen. - Which technology is used in barcode scanners?
Answer: Laser. - What is the chemical symbol for silver?
Answer: Ag. - Who proposed the quantum theory?
Answer: Max Planck. - What is the process of splitting an atomic nucleus called?
Answer: Nuclear fission. - Which organ produces insulin in the human body?
Answer: Pancreas. - What does HTTP stand for in internet protocols?
Answer: HyperText Transfer Protocol. - Which element is used in fluorescent lights?
Answer: Mercury vapor. - What is the primary source of energy for Earth’s water cycle?
Answer: Sun. - Who discovered the neutron?
Answer: James Chadwick. - What is the chemical formula for glucose?
Answer: C₆H₁₂O₆. - Which device amplifies sound waves?
Answer: Speaker. - What is the main function of white blood cells?
Answer: Fight infections. - Which planet is known as the Morning Star?
Answer: Venus. - What does AI stand for in technology?
Answer: Artificial Intelligence. - Who discovered the circulation of blood?
Answer: William Harvey. - What is the SI unit of electric charge?
Answer: Coulomb. - Which gas is used in fire extinguishers?
Answer: Carbon dioxide. - What is the primary source of energy for Earth’s atmosphere?
Answer: Solar energy. - Who invented the first commercially successful computer?
Answer: Konrad Zuse. - What is the chemical symbol for potassium?
Answer: K. - Which device converts light into electrical energy?
Answer: Solar cell. - What is the largest planet in our solar system?
Answer: Jupiter. - Which scientist discovered the structure of DNA?
Answer: Watson and Crick. - What is the chemical formula for sulfuric acid?
Answer: H₂SO₄. - Which technology is used in touchscreens?
Answer: Capacitive sensing. - What is the main function of the cerebellum in the brain?
Answer: Coordination of movement. - Which gas is used in refrigeration systems?
Answer: Freon. - Who developed the periodic table?
Answer: Dmitri Mendeleev. - What is the SI unit of pressure?
Answer: Pascal. - Which planet is known as the Blue Planet?
Answer: Earth. - What does LAN stand for in networking?
Answer: Local Area Network. - Which element is essential for bone formation?
Answer: Calcium. - Who discovered electromagnetic induction?
Answer: Michael Faraday. - What is the chemical formula for ethanol?
Answer: C₂H₅OH. - Which device measures humidity in the air?
Answer: Hygrometer. - What is the primary function of the liver?
Answer: Detoxification. - Which gas is used in lasers for cutting?
Answer: Carbon dioxide. - Who proposed the theory of continental drift?
Answer: Alfred Wegener. - What is the SI unit of luminous intensity?
Answer: Candela. - Which planet has the Great Red Spot?
Answer: Jupiter. - What does VR stand for in technology?
Answer: Virtual Reality. - Which element is used in batteries?
Answer: Lithium. - Who discovered the proton?
Answer: Ernest Rutherford. - What is the chemical formula for methane?
Answer: CH₄. - Which device measures the speed of wind?
Answer: Anemometer. - What is the primary function of the lungs?
Answer: Respiration. - Which gas is used in welding?
Answer: Acetylene. - Who invented the first practical television?
Answer: John Logie Baird. - What is the SI unit of magnetic flux?
Answer: Weber. - Which planet is known for its tilted axis?
Answer: Uranus. - What does Wi-Fi stand for?
Answer: Wireless Fidelity. - Which element is used in thermometers?
Answer: Mercury. - Who discovered the theory of general relativity?
Answer: Albert Einstein. - What is the chemical formula for hydrochloric acid?
Answer: HCl. - Which device measures earthquake intensity?
Answer: Seismograph. - What is the primary source of energy for Earth’s crust?
Answer: Geothermal energy. - Which gas is used in neon signs?
Answer: Neon. - Who invented the first practical microscope?
Answer: Antonie van Leeuwenhoek. - What is the SI unit of electric resistance?
Answer: Ohm. - Which planet is closest to Earth?
Answer: Venus. - What does IoT stand for in technology?
Answer: Internet of Things. - Which element is used in water purification?
Answer: Chlorine. - Who discovered the law of universal gravitation?
Answer: Isaac Newton. - What is the chemical formula for baking soda?
Answer: NaHCO₃. - Which device measures radiation?
Answer: Geiger counter. - What is the primary function of the stomach?
Answer: Digestion. - Which gas is used in airships?
Answer: Helium. - Who invented the first practical radio?
Answer: Guglielmo Marconi. - What is the SI unit of temperature?
Answer: Kelvin. - Which planet is known as the Ice Giant?
Answer: Neptune. - What does GUI stand for in computing?
Answer: Graphical User Interface. - Which element is used in fertilizers?
Answer: Nitrogen. - Who discovered the theory of quantum mechanics?
Answer: Werner Heisenberg. - What is the chemical formula for nitric acid?
Answer: HNO₃. - Which device measures blood pressure?
Answer: Sphygmomanometer. - What is the primary source of energy for Earth’s oceans?
Answer: Solar energy. - Which gas is used in food preservation?
Answer: Nitrogen. - Who invented the first practical typewriter?
Answer: Christopher Latham Sholes. - What is the SI unit of capacitance?
Answer: Farad. - Which planet has the shortest day?
Answer: Jupiter. - What does VPN stand for in networking?
Answer: Virtual Private Network. - Which element is used in matches?
Answer: Phosphorus. - Who discovered the theory of electromagnetism?
Answer: James Clerk Maxwell. - What is the chemical formula for lime?
Answer: CaO. - Which device measures electric power?
Answer: Wattmeter. - What is the primary function of the small intestine?
Answer: Nutrient absorption. - Which gas is used in scuba diving tanks?
Answer: Oxygen. - Who invented the first practical camera?
Answer: Louis Daguerre. - What is the SI unit of magnetic field strength?
Answer: Tesla. - Which planet is known for its thick atmosphere?
Answer: Venus. - What does SQL stand for in databases?
Answer: Structured Query Language. - Which element is used in glass production?
Answer: Silicon. - Who discovered the law of conservation of energy?
Answer: Julius Robert Mayer. - What is the chemical formula for vinegar?
Answer: CH₃COOH. - Which device measures the depth of the ocean?
Answer: Sonar. - What is the primary function of the pancreas?
Answer: Regulate blood sugar. - Which gas is used in medical anesthesia?
Answer: Nitrous oxide. - Who invented the first practical refrigerator?
Answer: Carl von Linde. - What is the SI unit of inductance?
Answer: Henry. - Which planet has the longest year?
Answer: Neptune. - What does AR stand for in technology?
Answer: Augmented Reality. - Which element is used in antiseptics?
Answer: Iodine. - Who discovered the theory of special relativity?
Answer: Albert Einstein. - What is the chemical formula for gypsum?
Answer: CaSO₄·2H₂O. - Which device measures the intensity of light?
Answer: Photometer. - What is the primary function of the thyroid gland?
Answer: Regulate metabolism. - Which gas is used in advertising signs?
Answer: Neon. - Who invented the first practical electric battery?
Answer: Alessandro Volta. - What is the SI unit of momentum?
Answer: Kilogram meter per second. - Which planet is known for its blue-green color?
Answer: Uranus. - What does API stand for in software development?
Answer: Application Programming Interface. - Which element is used in fireworks?
Answer: Strontium. - Who discovered the law of photoelectric effect?
Answer: Albert Einstein. - What is the chemical formula for rust?
Answer: Fe₂O₃·nH₂O. - Which device measures the altitude of an aircraft?
Answer: Altimeter. - What is the primary function of the spleen?
Answer: Filter blood. - Which gas is used in soft drink carbonation?
Answer: Carbon dioxide. - Who invented the first practical laser?
Answer: Theodore Maiman. - What is the SI unit of work?
Answer: Joule. - Which planet is known as Earth’s twin?
Answer: Venus. - What does BIOS stand for in computers?
Answer: Basic Input/Output System. - Which element is used in nuclear reactors as a moderator?
Answer: Graphite. - Who discovered the Casimir Effect?
Answer: Hendrik Casimir. - What is the chemical formula for laughing gas?
Answer: N₂O. - Which device measures the distance traveled by a vehicle?
Answer: Odometer. - What is the primary source of energy for Earth’s tectonic plates?
Answer: Earth’s internal heat. - Which gas is used in MRI scanners?
Answer: Helium. - Who developed the first successful recombinant protein production method using MSG?
Answer: Researchers at the Indian Institute of Science (IISc).
Conclusion
This extensive collection of science and technology GK bits is your go-to resource for mastering the general knowledge section of competitive exams. By practicing these one-liner questions and answers, you can enhance your understanding of scientific concepts and technological advancements, ensuring you’re well-prepared for any challenge. Keep revising these science and technology GK bits to stay ahead in your exam preparation and boost your confidence!
Disclaimer
The science and technology GK bits provided in this article are compiled from various reliable online sources for educational purposes only. While efforts have been made to ensure accuracy, we do not guarantee the completeness or correctness of the information. Users are advised to verify the answers independently before using them for competitive examinations. The author and publisher are not responsible for any errors or omissions in the content.
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