Introduction
Everyday Science is one of the most important sections of competitive exams like CSS, PMS, FPSC, PPSC, SPSC, KPPSC, NTS, and other one-paper tests in Pakistan. It tests a candidate’s basic understanding of physics, chemistry, biology, space science, inventions, human body, and environmental studies. Scoring well in this section is easy if aspirants practice regularly.
To help students prepare effectively, we have compiled 100+ solved Everyday Science MCQs with detailed explanations. These MCQs are selected carefully to match the latest exam trends and give you a solid understanding of concepts that often appear in tests.
✅ Everyday Science MCQs (Solved with Explanations)
🌍 Physics MCQs (Everyday Science)
Q1. The speed of light is?
(A) 3 × 10⁵ km/s
(B) 3 × 10⁸ m/s ✅
(C) 3 × 10⁶ m/s
(D) 3 × 10⁷ km/s
Explanation: Light travels at 300,000 km/s in vacuum, equal to 3 × 10⁸ m/s.
Q2. The unit of electric current is?
(A) Volt
(B) Watt
(C) Ampere ✅
(D) Ohm
Explanation: Ampere is the SI unit of electric current.
Q3. The freezing point of water on Celsius scale is?
(A) 0°C ✅
(B) 32°C
(C) 100°C
(D) –10°C
Explanation: Water freezes at 0°C under normal pressure.
Q4. The device used to measure atmospheric pressure is?
(A) Thermometer
(B) Barometer ✅
(C) Hygrometer
(D) Altimeter
Explanation: Barometer measures air pressure, invented by Evangelista Torricelli.
Q5. Who gave the three laws of motion?
(A) Galileo
(B) Newton ✅
(C) Einstein
(D) Kepler
Explanation: Newton’s laws explain motion and force.
Q6. Which color has the longest wavelength?
(A) Blue
(B) Red ✅
(C) Green
(D) Violet
Explanation: Red light has the longest wavelength, violet the shortest.
Q7. The unit of resistance is?
(A) Ohm ✅
(B) Watt
(C) Volt
(D) Joule
Explanation: Resistance is measured in ohms (Ω).
Q8. Which planet is known as the “Red Planet”?
(A) Venus
(B) Mars ✅
(C) Jupiter
(D) Mercury
Explanation: Mars appears red due to iron oxide on its surface.
Q9. Which energy is produced from sunlight?
(A) Hydro
(B) Solar ✅
(C) Nuclear
(D) Geothermal
Explanation: Solar panels convert sunlight into electricity.
Q10. The fastest spinning planet is?
(A) Earth
(B) Jupiter ✅
(C) Mars
(D) Venus
Explanation: Jupiter completes one rotation in about 10 hours.
🧪 Chemistry MCQs
Q11. The chemical formula of water is?
(A) H₂O ✅
(B) HO₂
(C) H₂O₂
(D) OH
Explanation: Water is composed of 2 hydrogen atoms and 1 oxygen atom.
Q12. Common salt is?
(A) Na₂CO₃
(B) NaCl ✅
(C) KCl
(D) NaOH
Explanation: Table salt is sodium chloride.
Q13. The most abundant gas in air is?
(A) Oxygen
(B) Nitrogen ✅
(C) CO₂
(D) Hydrogen
Explanation: Nitrogen makes up 78% of air.
Q14. Rusting of iron takes place in presence of?
(A) Oxygen and water ✅
(B) Only water
(C) Only oxygen
(D) Sunlight
Explanation: Moisture and oxygen cause rusting.
Q15. pH value of pure water is?
(A) 0
(B) 7 ✅
(C) 14
(D) 6
Explanation: Pure water is neutral at pH 7.
Q16. The lightest element is?
(A) Helium
(B) Hydrogen ✅
(C) Lithium
(D) Oxygen
Explanation: Hydrogen is the lightest element in the periodic table.
Q17. The chemical formula of lime water is?
(A) CaO
(B) Ca(OH)₂ ✅
(C) CaCO₃
(D) CaCl₂
Explanation: Lime water is calcium hydroxide.
Q18. Which gas is called laughing gas?
(A) CO₂
(B) N₂O ✅
(C) O₂
(D) NH₃
Explanation: Nitrous oxide is used as an anesthetic.
Q19. Which acid is present in vinegar?
(A) Formic acid
(B) Acetic acid ✅
(C) Citric acid
(D) Hydrochloric acid
Explanation: Vinegar contains 4–8% acetic acid.
Q20. Ozone chemical formula is?
(A) O₃ ✅
(B) O₂
(C) O₄
(D) O₁
Explanation: Ozone is made up of 3 oxygen atoms.
🧬 Biology MCQs
Q21. The basic unit of life is?
(A) Atom
(B) Cell ✅
(C) Tissue
(D) Organ
Explanation: All organisms are made of cells.
Q22. The largest organ of human body is?
(A) Heart
(B) Liver
(C) Skin ✅
(D) Brain
Explanation: Skin covers the whole body, largest organ.
Q23. The blood is purified in?
(A) Heart
(B) Kidneys ✅
(C) Liver
(D) Lungs
Explanation: Kidneys filter blood waste.
Q24. Which vitamin is produced in the skin by sunlight?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin D ✅
(D) Vitamin K
Explanation: UV rays help produce Vitamin D.
Q25. The smallest bone in human body is?
(A) Femur
(B) Stapes ✅
(C) Ulna
(D) Tibia
Explanation: Stapes in the ear is the smallest bone.
Q26. Insulin is secreted by?
(A) Liver
(B) Pancreas ✅
(C) Kidney
(D) Heart
Explanation: Insulin regulates blood sugar.
Q27. Red blood cells carry?
(A) CO₂
(B) Oxygen ✅
(C) Glucose
(D) Fat
Explanation: Hemoglobin in RBCs carries oxygen.
Q28. The human heart has how many chambers?
(A) 2
(B) 3
(C) 4 ✅
(D) 5
Explanation: Two atria and two ventricles.
Q29. Malaria is caused by?
(A) Virus
(B) Plasmodium ✅
(C) Bacteria
(D) Worm
Explanation: Protozoa Plasmodium spread by mosquito.
Q30. The study of fungi is called?
(A) Botany
(B) Mycology ✅
(C) Zoology
(D) Microbiology
Explanation: Mycology = study of fungi.
💻 Computer Science MCQs (Everyday Science)
Q31. Who is called the father of computers?
(A) Charles Babbage ✅
(B) Alan Turing
(C) Bill Gates
(D) John von Neumann
Explanation: Charles Babbage designed the Analytical Engine in the 1830s.
Q32. The brain of computer is?
(A) Monitor
(B) CPU ✅
(C) RAM
(D) Hard disk
Explanation: CPU (Central Processing Unit) controls all operations.
Q33. 1 Kilobyte (KB) is equal to?
(A) 1000 bytes
(B) 1024 bytes ✅
(C) 1200 bytes
(D) 512 bytes
Explanation: Computers use binary system, so 1 KB = 1024 bytes.
Q34. MS Word, Excel, PowerPoint are examples of?
(A) System software
(B) Application software ✅
(C) Operating system
(D) Programming language
Explanation: These are productivity applications.
Q35. Which one is not an input device?
(A) Mouse
(B) Keyboard
(C) Printer ✅
(D) Scanner
Explanation: Printer is an output device.
Q36. A virus in computer is?
(A) A biological infection
(B) Malicious program ✅
(C) Useful software
(D) None of these
Explanation: Virus is designed to damage or disrupt computer systems.
Q37. WWW stands for?
(A) World Wide Web ✅
(B) Wide Web World
(C) World Wired Web
(D) None of these
Explanation: WWW was invented by Tim Berners-Lee in 1989.
Q38. Shortcut key for ‘Copy’ in MS Word is?
(A) Ctrl + X
(B) Ctrl + C ✅
(C) Ctrl + V
(D) Ctrl + Z
Explanation: Ctrl+C is copy, Ctrl+V is paste, Ctrl+X is cut.
Q39. The binary system uses base?
(A) 2 ✅
(B) 8
(C) 10
(D) 16
Explanation: Computers work in binary → 0 and 1.
Q40. Google Chrome is a?
(A) Operating system
(B) Web browser ✅
(C) Search engine
(D) Antivirus
Explanation: Chrome is the most used web browser.
🌱 Environmental Science MCQs
Q41. Which gas causes global warming the most?
(A) O₂
(B) CO₂ ✅
(C) H₂
(D) N₂
Explanation: Carbon dioxide traps heat in the atmosphere.
Q42. Ozone layer protects us from?
(A) Visible rays
(B) UV rays ✅
(C) Infrared rays
(D) X-rays
Explanation: Ozone absorbs harmful ultraviolet radiation.
Q43. The main source of energy on Earth is?
(A) Moon
(B) Sun ✅
(C) Earth’s core
(D) Volcanoes
Explanation: Solar energy drives climate, photosynthesis, and weather.
Q44. The largest rainforest in the world is?
(A) Congo
(B) Amazon ✅
(C) Sundarbans
(D) Taiga
Explanation: Amazon rainforest produces ~20% of Earth’s oxygen.
Q45. Which is the most abundant greenhouse gas?
(A) Methane
(B) Water vapor ✅
(C) CO₂
(D) Nitrous oxide
Explanation: Water vapor is the dominant greenhouse gas.
Q46. Kyoto Protocol deals with?
(A) Nuclear weapons
(B) Climate change ✅
(C) Trade
(D) Human rights
Explanation: Kyoto Protocol (1997) set emission reduction targets.
Q47. Which country produces the most CO₂ emissions today?
(A) USA
(B) China ✅
(C) India
(D) Russia
Explanation: China is currently the largest CO₂ emitter.
Q48. Acid rain is caused by?
(A) CO₂ and O₂
(B) SO₂ and NO₂ ✅
(C) H₂ and O₂
(D) O₃ and CO
Explanation: Sulfur and nitrogen oxides form acids in rainwater.
Q49. Deforestation mainly leads to?
(A) Soil erosion ✅
(B) Ozone layer formation
(C) Ocean acidification
(D) Desert cooling
Explanation: Trees prevent erosion and desertification.
Q50. Which organization monitors climate change worldwide?
(A) WHO
(B) IPCC ✅
(C) WTO
(D) ILO
Explanation: Intergovernmental Panel on Climate Change (IPCC) provides global climate assessments.
🔬 General Science MCQs
Q51. Which planet is closest to the Sun?
(A) Venus
(B) Mercury ✅
(C) Mars
(D) Jupiter
Explanation: Mercury is the smallest and nearest to the Sun.
Q52. The coldest planet in the Solar System is?
(A) Neptune ✅
(B) Uranus
(C) Pluto
(D) Saturn
Explanation: Neptune is extremely cold due to its distance from the Sun.
Q53. The first person to step on the Moon was?
(A) Yuri Gagarin
(B) Neil Armstrong ✅
(C) Buzz Aldrin
(D) John Glenn
Explanation: Neil Armstrong in 1969 (Apollo 11).
Q54. Which blood group is universal donor?
(A) A
(B) B
(C) O negative ✅
(D) AB positive
Explanation: O-negative blood can be donated to all.
Q55. The study of earthquakes is called?
(A) Geology
(B) Seismology ✅
(C) Meteorology
(D) Oceanography
Explanation: Seismology studies earthquakes and seismic waves.
Q56. The fastest land animal is?
(A) Cheetah ✅
(B) Tiger
(C) Horse
(D) Lion
Explanation: Cheetah runs up to 120 km/h.
Q57. Which vitamin helps in blood clotting?
(A) Vitamin A
(B) Vitamin K ✅
(C) Vitamin C
(D) Vitamin D
Explanation: Vitamin K is essential for clotting factors.
Q58. The SI unit of force is?
(A) Newton ✅
(B) Joule
(C) Watt
(D) Ampere
Explanation: Named after Isaac Newton.
Q59. Which is the hardest natural substance on Earth?
(A) Iron
(B) Diamond ✅
(C) Gold
(D) Quartz
Explanation: Diamond is hardest due to strong carbon bonds.
Q60. Human body temperature is maintained at?
(A) 36.5–37°C ✅
(B) 32°C
(C) 40°C
(D) 30°C Explanation: Normal body temperature is 98.6°F (37°C).
🌌 Space & Astronomy MCQs
Q61. Which planet is known as the Red Planet?
(A) Mercury
(B) Mars ✅
(C) Venus
(D) Jupiter
Explanation: Mars appears red due to iron oxide (rust) on its surface.
Q62. The largest planet in our Solar System is?
(A) Earth
(B) Saturn
(C) Jupiter ✅
(D) Neptune
Explanation: Jupiter is the largest, with 79 known moons.
Q63. Which planet has the most rings?
(A) Jupiter
(B) Saturn ✅
(C) Uranus
(D) Neptune
Explanation: Saturn is famous for its visible rings of ice and rock.
Q64. The first artificial satellite launched by humans was?
(A) Apollo 11
(B) Sputnik-1 ✅
(C) Voyager-1
(D) Luna-1
Explanation: Sputnik-1 was launched by the Soviet Union in 1957.
Q65. Which galaxy does our Solar System belong to?
(A) Andromeda
(B) Milky Way ✅
(C) Whirlpool
(D) Sombrero
Explanation: The Milky Way contains billions of stars including our Sun.
Q66. The hottest planet in the Solar System is?
(A) Mercury
(B) Venus ✅
(C) Mars
(D) Neptune
Explanation: Venus has a thick CO₂ atmosphere that traps heat.
Q67. The Sun produces energy through?
(A) Nuclear fission
(B) Nuclear fusion ✅
(C) Chemical reaction
(D) Combustion
Explanation: Hydrogen fuses into helium, releasing energy.
Q68. The second man to walk on the Moon was?
(A) Yuri Gagarin
(B) Buzz Aldrin ✅
(C) John Glenn
(D) Neil Armstrong
Explanation: Buzz Aldrin followed Armstrong in 1969.
Q69. Which planet is known as the Morning Star?
(A) Venus ✅
(B) Mercury
(C) Jupiter
(D) Saturn
Explanation: Venus appears bright in the morning/evening sky.
Q70. The closest star to Earth after the Sun is?
(A) Proxima Centauri ✅
(B) Sirius
(C) Betelgeuse
(D) Polaris
Explanation: Proxima Centauri is 4.24 light-years away.
🧍 Human Body & Health MCQs
Q71. The largest organ of the human body is?
(A) Heart
(B) Skin ✅
(C) Liver
(D) Lungs
Explanation: Skin covers ~1.5–2 square meters in adults.
Q72. Which blood group is universal recipient?
(A) O-
(B) AB+ ✅
(C) B+
(D) A+
Explanation: AB+ can receive blood from all groups.
Q73. The average human heart beats per minute?
(A) 50–60
(B) 70–80 ✅
(C) 90–100
(D) 120
Explanation: Normal resting heart rate is 72 bpm.
Q74. Which organ purifies blood in the human body?
(A) Lungs
(B) Liver
(C) Kidneys ✅
(D) Heart
Explanation: Kidneys filter waste and excess water.
Q75. Deficiency of Vitamin D causes?
(A) Rickets ✅
(B) Night blindness
(C) Scurvy
(D) Anemia
Explanation: Vitamin D deficiency weakens bones.
Q76. Red blood cells are produced in?
(A) Brain
(B) Bone marrow ✅
(C) Liver
(D) Heart
Explanation: Bone marrow makes blood cells.
Q77. Which part of the body controls balance?
(A) Cerebrum
(B) Cerebellum ✅
(C) Spinal cord
(D) Medulla
Explanation: Cerebellum coordinates posture and movement.
Q78. Normal blood pressure is?
(A) 100/70 mmHg
(B) 120/80 mmHg ✅
(C) 140/90 mmHg
(D) 160/100 mmHg
Explanation: Average healthy blood pressure is 120/80.
Q79. Which gland is known as the “master gland”?
(A) Thyroid
(B) Pituitary ✅
(C) Adrenal
(D) Pancreas
Explanation: Pituitary regulates other endocrine glands.
Q80. Which mineral is essential for hemoglobin?
(A) Calcium
(B) Iron ✅
(C) Iodine
(D) Potassium
Explanation: Hemoglobin uses iron to bind oxygen.
💡 Inventions & Discoveries MCQs
Q81. Who invented the telephone?
(A) Thomas Edison
(B) Alexander Graham Bell ✅
(C) Nikola Tesla
(D) Guglielmo Marconi
Explanation: Bell patented the telephone in 1876.
Q82. Who invented the light bulb?
(A) Thomas Edison ✅
(B) Benjamin Franklin
(C) Newton
(D) Faraday
Explanation: Edison is credited with commercial light bulb (1879).
Q83. Who discovered gravity?
(A) Galileo
(B) Newton ✅
(C) Einstein
(D) Copernicus
Explanation: Isaac Newton described universal gravitation in 1687.
Q84. The inventor of World Wide Web is?
(A) Bill Gates
(B) Tim Berners-Lee ✅
(C) Steve Jobs
(D) Elon Musk
Explanation: He introduced the WWW in 1989.
Q85. Who invented the airplane?
(A) Wright Brothers ✅
(B) Henry Ford
(C) Alexander Fleming
(D) Thomas Edison
Explanation: Wright Brothers flew the first powered airplane in 1903.
Q86. The scientist who discovered penicillin?
(A) Louis Pasteur
(B) Alexander Fleming ✅
(C) Robert Koch
(D) Edward Jenner
Explanation: Fleming discovered penicillin in 1928.
Q87. Who invented radio?
(A) Marconi ✅
(B) Tesla
(C) Edison
(D) Bell
Explanation: Guglielmo Marconi pioneered radio communication.
Q88. The first Nobel Prize winner in Physics was?
(A) Albert Einstein
(B) Wilhelm Röntgen ✅
(C) Rutherford
(D) Bohr
Explanation: Röntgen won in 1901 for X-rays.
Q89. Who discovered the circulation of blood?
(A) Harvey ✅
(B) Hippocrates
(C) Galen
(D) Pasteur
Explanation: William Harvey (1628) proved blood circulation.
Q90. The scientist who developed the theory of relativity?
(A) Einstein ✅
(B) Newton
(C) Bohr
(D) Planck
Explanation: Albert Einstein proposed relativity (1905 & 1915).
🇵🇰 Everyday Science (Pakistan Focus)
Q91. Pakistan’s first nuclear test was conducted in?
(A) 1996
(B) 1998 ✅
(C) 1999
(D) 2001
Explanation: Pakistan tested on 28 May 1998 (Chagai-I).
Q92. SUPARCO is related to?
(A) Agriculture
(B) Space research ✅
(C) Education
(D) Industry
Explanation: Pakistan Space and Upper Atmosphere Research Commission.
Q93. First Pakistani satellite launched in 1990 was?
(A) Paksat-1
(B) Badr-A ✅
(C) Badr-B
(D) Paksat-MM1
Explanation: Badr-A was Pakistan’s first satellite.
Q94. Who is known as the father of Pakistan’s nuclear program?
(A) Dr. Abdul Qadeer Khan ✅
(B) Dr. Salam
(C) Dr. Ishfaq Ahmad
(D) Munir Ahmad Khan
Explanation: AQ Khan played the key role in uranium enrichment.
Q95. The first Nobel Prize winner from Pakistan was?
(A) Dr. A.Q. Khan
(B) Dr. Abdus Salam ✅
(C) Malala Yousafzai
(D) None
Explanation: Abdus Salam won in Physics (1979).
Q96. The natural gas was first discovered in Pakistan at?
(A) Sui ✅
(B) Karachi
(C) Gwadar
(D) Multan
Explanation: Sui (Balochistan) in 1952.
Q97. The largest dam of Pakistan is?
(A) Warsak
(B) Tarbela ✅
(C) Mangla
(D) Diamer-Bhasha
Explanation: Tarbela is the world’s largest earth-filled dam.
Q98. Which is the national fruit of Pakistan?
(A) Mango ✅
(B) Guava
(C) Orange
(D) Apple
Explanation: Mango is declared as national fruit.
Q99. Which is the national bird of Pakistan?
(A) Markhor
(B) Chukar partridge ✅
(C) Pigeon
(D) Falcon
Explanation: Chukar is the national bird.
Q100. Which is the national tree of Pakistan?
(A) Neem
(B) Deodar ✅
(C) Banyan
(D) Pine
Explanation: Deodar is a Himalayan cedar tree.
📖 Conclusion
Everyday Science MCQs are not just about memorization but about understanding concepts that relate to our daily lives. Competitive exams in Pakistan frequently repeat similar questions, so practicing these 100+ solved MCQs with explanations will help you secure maximum marks.
👉 Keep revising, share this resource with other aspirants, and practice regularly.
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