General Science MCQs are commonly asked in competitive exams to test your basic science knowledge. These questions cover topics from physics, chemistry, and biology. Practicing general science MCQ regularly helps you remember key concepts and answer questions quickly. Many exams like SSC, UPSC, NEET, and banking tests include these questions to check problem-solving skills. Subjects like the human body, chemical reactions, and energy are important for scoring well. Regular practice can improve accuracy, manage time better, and boost your exam performance. Understanding concepts instead of memorizing answers will help you succeed.
General Science MCQs
Q. What is the SI unit of force?
a) Joule
b) Pascal
c) Newton
d) Watt
Answer: c) Newton
Q. Which of the following is a scalar quantity?
a) Velocity
b) Force
c) Work
d) Acceleration
Answer: c) Work
Q. The speed of light in a vacuum is approximately:
a) 3 × 10⁵ m/s
b) 3 × 10⁸ m/s
c) 3 × 10⁶ m/s
d) 3 × 10¹⁰ m/s
Answer: b) 3 × 10⁸ m/s
Q. Who proposed the three laws of motion?
a) Albert Einstein
b) Isaac Newton
c) Galileo Galilei
d) Thomas Edison
Answer: b) Isaac Newton
Q. What type of mirror is used in a car’s rearview mirror?
a) Convex
b) Concave
c) Plane
d) Cylindrical
Answer: a) Convex
Q. The unit of power is:
a) Joule
b) Watt
c) Newton
d) Ampere
Answer: b) Watt
Q. Which property of sound determines its pitch?
a) Amplitude
b) Frequency
c) Speed
d) Wavelength
Answer: b) Frequency
Q. A freely falling object experiences:
a) Uniform velocity
b) Constant acceleration
c) Increasing mass
d) Zero acceleration
Answer: b) Constant acceleration
Q. What is the boiling point of water at standard atmospheric pressure?
a) 90°C
b) 100°C
c) 120°C
d) 150°C
Answer: b) 100°C
Q. Which principle explains the floating of ships?
a) Newton’s First Law
b) Bernoulli’s Principle
c) Archimedes’ Principle
d) Pascal’s Law
Answer: c) Archimedes’ Principle
Q. The unit of electric current is:
a) Watt
b) Volt
c) Ohm
d) Ampere
Answer: d) Ampere
Q. The first law of thermodynamics is based on the principle of:
a) Conservation of mass
b) Conservation of energy
c) Conservation of momentum
d) Conservation of charge
Answer: b) Conservation of energy
Q. What type of energy is stored in a stretched rubber band?
a) Kinetic energy
b) Thermal energy
c) Potential energy
d) Electrical energy
Answer: c) Potential energy
Q. A sound wave cannot travel through:
a) Air
b) Water
c) Vacuum
d) Steel
Answer: c) Vacuum
Q. Which subatomic particle has no charge?
a) Proton
b) Electron
c) Neutron
d) Positron
Answer: c) Neutron
Q. What happens to the pressure of a gas if its volume is decreased while keeping temperature constant?
a) Decreases
b) Increases
c) Remains unchanged
d) Becomes zero
Answer: b) Increases
Q. Which phenomenon explains why a pencil appears bent in a glass of water?
a) Reflection
b) Refraction
c) Dispersion
d) Diffraction
Answer: b) Refraction
Q. What is the acceleration due to gravity on Earth’s surface?
a) 5.8 m/s²
b) 8.9 m/s²
c) 9.8 m/s²
d) 12.2 m/s²
Answer: c) 9.8 m/s²
Q. Which type of lens is used to correct myopia (short-sightedness)?
a) Convex lens
b) Concave lens
c) Cylindrical lens
d) None of the above
Answer: b) Concave lens
Q. The energy possessed by a moving object is called:
a) Kinetic energy
b) Potential energy
c) Chemical energy
d) Nuclear energy
Answer: a) Kinetic energy
Q. Which element has the atomic number 1?
a) Helium
b) Oxygen
c) Hydrogen
d) Nitrogen
Answer: c) Hydrogen
Q. The chemical formula of water is:
a) CO₂
b) H₂O
c) CH₄
d) O₂
Answer: b) H₂O
Q. Which gas is responsible for the greenhouse effect?
a) Nitrogen
b) Carbon dioxide
c) Hydrogen
d) Neon
Answer: b) Carbon dioxide
Q. What is the pH value of pure water?
a) 5
b) 7
c) 9
d) 12
Answer: b) 7
Q. Which metal is the best conductor of electricity?
a) Iron
b) Copper
c) Silver
d) Aluminum
Answer: c) Silver
Q. The process of converting a solid into a gas is called:
a) Condensation
b) Evaporation
c) Sublimation
d) Freezing
Answer: c) Sublimation
Q. What is the most abundant gas in Earth’s atmosphere?
a) Oxygen
b) Nitrogen
c) Carbon Dioxide
d) Hydrogen
Answer: b) Nitrogen
Q. Rusting of iron occurs due to the presence of:
a) Carbon dioxide
b) Oxygen and water
c) Hydrogen
d) Nitrogen
Answer: b) Oxygen and water
Q. The hardest natural substance on Earth is:
a) Graphite
b) Diamond
c) Quartz
d) Gold
Answer: b) Diamond
Q. What is dry ice?
a) Frozen water
b) Solid carbon dioxide
c) Compressed oxygen
d) Liquid nitrogen
Answer: b) Solid carbon dioxide
Q. Which of the following is an example of a noble gas?
a) Hydrogen
b) Oxygen
c) Helium
d) Nitrogen
Answer: c) Helium
Q. What is the chemical formula of common salt?
a) NaCl
b) KCl
c) NaOH
d) HCl
Answer: a) NaCl
Q. Which metal is liquid at room temperature?
a) Iron
b) Mercury
c) Aluminum
d) Lead
Answer: b) Mercury
Q. What is the chemical name of baking soda?
a) Sodium carbonate
b) Sodium bicarbonate
c) Calcium carbonate
d) Magnesium sulfate
Answer: b) Sodium bicarbonate
Q. Which element is used in batteries?
a) Iron
b) Lithium
c) Sodium
d) Zinc
Answer: b) Lithium
Q. Which gas is released during respiration?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: c) Carbon dioxide
Q. The reaction of an acid with a base produces:
a) A salt and water
b) A gas and water
c) Only water
d) Only a salt
Answer: a) A salt and water
Q. What is the primary component of natural gas?
a) Butane
b) Methane
c) Ethanol
d) Propane
Answer: b) Methane
Q. What is the main component of air?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Hydrogen
Answer: c) Nitrogen
Q. The chemical formula of quicklime is:
a) Ca(OH)₂
b) CaO
c) CO₂
d) CaCO₃
Answer: b) CaO
Q. The powerhouse of the cell is:
a) Nucleus
b) Ribosome
c) Mitochondria
d) Golgi apparatus
Answer: c) Mitochondria
Q. What is the basic unit of life?
a) Organ
b) Cell
c) Tissue
d) Organism
Answer: b) Cell
Q. Which vitamin is known as the sunshine vitamin?
a) Vitamin A
b) Vitamin B
c) Vitamin C
d) Vitamin D
Answer: d) Vitamin D
Q. What is the primary function of red blood cells?
a) Transport oxygen
b) Fight infections
c) Produce energy
d) Store nutrients
Answer: a) Transport oxygen
Q. Which organ is responsible for filtering blood in humans?
a) Heart
b) Liver
c) Kidney
d) Lungs
Answer: c) Kidney
Q. The process by which plants make their food is called:
a) Respiration
b) Photosynthesis
c) Digestion
d) Fermentation
Answer: b) Photosynthesis
Q. What is the function of white blood cells?
a) Transport oxygen
b) Carry nutrients
c) Fight infections
d) Store fat
Answer: c) Fight infections
Q. The human heart has how many chambers?
a) 2
b) 4
c) 6
d) 8
Answer: b) 4
Q. DNA is found in which part of the cell?
a) Cytoplasm
b) Ribosome
c) Nucleus
d) Golgi body
Answer: c) Nucleus
Q. The longest bone in the human body is:
a) Tibia
b) Femur
c) Humerus
d) Radius
Answer: b) Femur
Q. What is the basic unit of heredity?
a) Chromosome
b) Gene
c) DNA
d) RNA
Answer: b) Gene
Q. The organ responsible for producing insulin in the human body is:
a) Liver
b) Pancreas
c) Kidney
d) Stomach
Answer: b) Pancreas
Q. Which part of the human brain controls balance and coordination?
a) Cerebrum
b) Cerebellum
c) Medulla oblongata
d) Hypothalamus
Answer: b) Cerebellum
Q. Which vitamin helps in blood clotting?
a) Vitamin A
b) Vitamin B
c) Vitamin K
d) Vitamin D
Answer: c) Vitamin K
Q. The largest organ in the human body is:
a) Heart
b) Liver
c) Skin
d) Brain
Answer: c) Skin
Q. Which blood cells help fight infections in the human body?
a) Red blood cells
b) White blood cells
c) Platelets
d) Plasma cells
Answer: b) White blood cells
Q. Which organ in the human body produces bile?
a) Stomach
b) Liver
c) Pancreas
d) Kidney
Answer: b) Liver
Q. What is the structural and functional unit of the kidney?
a) Neuron
b) Nephron
c) Alveolus
d) Glomerulus
Answer: b) Nephron
Q. Which part of the brain controls involuntary actions such as heartbeat and breathing?
a) Cerebrum
b) Cerebellum
c) Medulla oblongata
d) Hypothalamus
Answer: c) Medulla oblongata
Q. What is the storage form of carbohydrates in the human liver?
a) Glucose
b) Starch
c) Glycogen
d) Cellulose
Answer: c) Glycogen
Wrapping Up
Practicing General Science MCQs helps you get better at science and do well in exams. These questions cover physics, chemistry, biology, and environmental science. Many exams like SSC, UPSC, and NEET include them, so regular practice is important. It helps you understand concepts, answer faster, and improve accuracy. Instead of just memorizing answers, focus on learning the basics. The more you practice, the more confident you will be. Keep solving science mcqs daily to build your knowledge and score better in exams. Stay consistent, and success will follow.
