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As we know Science is an integral part of our daily lives, often in ways we might not immediately recognize. Here in this article, we will find the most important Science GK Questions with Answers. For example, when we use soap to wash our hands before eating, we are engaging with science. Soap breaks down oils and dirt, allowing them to be washed away with water. This simple act is a practical application of chemistry.
Everyday Science in Action
Many everyday activities are deeply rooted in scientific principles. Consider how milk turns into curd through the process of fermentation, or how bread rises and bakes in a hot oven due to the chemical reactions between ingredients. These examples highlight how science influences the changes in the properties of substances around us.
General Knowledge: Science GK Questions
General Science GK Questions encompass various fields such as Physics, Chemistry, Biology, and Earth Sciences. It aims to understand the natural world through observation and experimentation. This knowledge is not only fascinating but also essential for various competitive exams like UPSC, SSC, RRB, banking, defence, and state-level exams.
Let’s explore the best Science GK Questions with Answers in the form of MCQs.
Science GK Questions: MCQS
Q1. The velocity of light is maximum in?
(a) Solid
(b) Glass
(c) Water
(d) Vacuum
Ans. (d) Vacuum
Q2. What is the function of the iris in the human eye?
(a) Eye donation
(b) Controlling the amount of light entering the eye
(c) Forming an image
(d) Protection of eyes
Ans. (b) Controlling the amount of light entering the eye
Q3. Sound waves cannot travel in?
(a) Air
(b) Water
(c) Iron
(d) Vacuum
Ans. (d) Vacuum
Q4. On which principle does the atom bomb work?
(a) Principle of magnetic induction
(b) Nuclear fission
(c) Nuclear fusion
(d) None of the above
Ans. (b) Nuclear fission
Q5. What is the normal temperature of the human body according to the Kelvin value?
(a) 310 Kelvin
(b) 260 Kelvin
(c) 100 Kelvin
(d) 480 Kelvin
Ans. (a) 310 Kelvin
Q6. In what form is heavy water [D 20] used in nuclear reactors?
(a) Fuel
(b) Moderator
(c) Coolant
(d) Reactor
Ans. (b) Moderator
Q7. What is the main component of ‘biogas’?
(a) Butane
(b) Propane
(c) Methane
(d) Ethane
Ans. (c) Methane
Q8. By what is the temperature of the sun measured?
(a) Voltmeter
(b) Pyrometer
(c) Thermometer
(d) Barometer
Ans. (b) Pyrometer
Q9. Which scientist invented the telescope?
(a) Hertz
(b) Newton
(c) Galileo
(d) Maxwell
Ans. (c) Galileo
READ MORE: Gk Questions on Chandrayaan 3
Q10. What is the period of geostationary satellites?
(a) 12 hours
(b) 06 hours
(c) 24 hours
(d) 18 hours
Ans. (c) 24 hours
Q11. What is the difference in surface tension when soap is dissolved in water?
(a) First it decreases then it increases
(b) It increases
(c) It remains unchanged
(d) It decreases
Ans. (d) It decreases
Q12. ‘Lumen’ is the unit of?
(a) Luminous intensity
(b) Pressure
(c) Gravitation
(d) Luminous flux
Ans. (d) Luminous flux
Q13. Ice is floating on water in a bucket. When the ice melts completely, the level of water in the bucket will remain …..?
(a) Same
(b) Decrease
(c) Increase
(d) First less then more
Ans. (a) Same
Q14. What is Newton’s first law of motion called?
(a) Law of dynamics
(b) Law of inertia
(c) Law of conservation of momentum
(d) None of the above
Ans. (b) Law of inertia
Q15. The pressure inside a soap bubble is ….. the atmospheric pressure?
(a) Less than
(b) More than
(c) Equal to
(d) First increase then decrease
Ans. (b) More than
Q16. When an object is placed between two parallel plane mirrors, what is the number of images formed?
(a) Four
(b) Ten
(c) Infinite
(d) One
Ans. (c) Infinite
Q17. Due to which process, the release of oxygen and absorption of carbon dioxide takes place in the plants?
(a) Diffusion
(b) Transpiration
(c) Photosynthesis
(d) Oxygenation
Ans. (c) Photosynthesis
Q18. Which metal is found in haemoglobin?
(a) Iron
(b) Copper
(c) Silver
(d) Titanium
Ans. (a) Iron
Q19. Why is a small space left at the joint between two railway tracks?
(a) For ease of changing tracks
(b) To generate the required gravitational force
(c) Because metal expands on heating and contracts on cooling
(d) To make the tracks look beautiful
Ans. (c) Because metal expands on heating and contracts on cooling
Q20. What is the sterilisation of women called?
(a) Neuron
(b) Termology
(c) Basectomy
(d) Tubectomy
Ans. (d) Tubectomy
Science GK Questions with their Answers one-liner
Q. Where is the velocity of light maximum?
Answer: Vacuum
Q. What is the function of the iris in the human eye?
Answer: Controlling the amount of light entering the eye
Q. In which medium can sound waves not travel?
Answer: Vacuum
Q. What principle does the atom bomb work on?
Answer: Nuclear fission
Q. What is the normal temperature of the human body in Kelvin?
Answer: 310 Kelvin
Q. In what form is heavy water used in a nuclear reactor?
Answer: Moderator
Q. What is the main component of biogas?
Answer: Methane
Q. By what instrument is the temperature of the sun measured?
Answer: Pyrometer
Q. Who invented the telescope?
Answer: Galileo
Q. What is the period of a geostationary satellite?
Answer: 24 hours
Q. What happens to the surface tension of water when soap is dissolved in it?
Answer: Decreases
Q. What is the unit of ‘Lumen’?
Answer: Luminous flux
Q. What happens to the water level when ice floating on it melts?
Answer: Same
Q. What is Newton’s first law of motion called?
Answer: The law of inertia
Q. How does the pressure inside a soap bubble compare to atmospheric pressure?
Answer: More
Q. How many images are formed when an object is placed between two parallel plane mirrors?
Answer: Infinite
Q. Which process in plants involves the release of oxygen and absorption of carbon dioxide?
Answer: Photosynthesis
Q. Which metal is found in haemoglobin?
Answer: Iron
Q. Why is a small space left at the joint between two railway tracks?
Answer: Metal expands on heating and contracts on cooling
Q. What is the sterilisation of women called?
Answer: Tubectomy
