PPSC Science Past Papers  MCQs 2025

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1. Responsible for blood clotting?





2. Electric current is measured by ____?





3. Protein is synthesized by which organelle?





4. The element common to all acids is _____?





5. The shortest distance between two points is called?





6. The instrument used to measure blood pressure is?





7. The fourth state of matter is ____?





8. Potential energy and kinetic energy are types of which form of energy?





9. The speed of light is ________?





10. One horse power is equal to _____?





11. The intensity/magnitude of earthquake is measured by ____?





12. Insulin is produced/secreted by which organ of the body?





13. Which is the largest gland in the human body?





14. In a railway track, two rails are joined end to end with a gap in between them because?





15. Which device converts chemical energy into electrical energy?





16. The lightest gas that provides a larger elevation for balloons and is the lightest of all gases is _____?





17. Cooking gas is mixture of ______?





18. The most abundant element in the universe is called?





19. The law of inertia also called _____?





20. Which acid is produced in the gastric juice of the stomach to digest food?





21. What is the normal resting heart rate for a healthy adult?





22. Which of following is used in pencils as a lubricant?





23. The hardest substance in the world is known as?





24. Mushrooms belong to which of the following groups?





25. What is the approximate surface temperature of the Sun?





26. A bee is an example of a(n):





27. What is the approximate height of Earth’s atmosphere?





28. A thermos flask is used to maintain?





29. The Svedberg (Sv) is the unit of which of the following?





30. The man who built the first Mechanical Calculator was ______?





31. Which of the following works as a buffer against environmental changes?





32. Solar system was discovered by _____?





33. In which of the following is Vitamin D found?





34. The human kidneys are covered by two protective layers. These layers are called ______?





35. Who discovered homeopathy?





36. Who discovered bacteria?





37. Which of the following foods has the highest protein content per serving?





38. What does the medical term “Lordosis” mean?





39. What are marsupial animals known for?





40. What is the fastest growing plant in the world?





41. Which of the following elements is a liquid at room temperature?





42. Which of the following are locomotor structures used by bacteria?





43. Polythene is formed when polymers of ethene combined together. The polythene is classified as which one of the following type of plastic?





44. How long has the Sun taken to use up half of its hydrogen fuel?





45. Which of the following is used in fire ‘extinguishers’?





46. A refrigerator works on the principle of ______?





47. The Earth moved around its axis once in 24 hours is called rotation while its motion round the sun once is approximately 365 days is called?





48. Total percentage of silicon in earth crust?





49. Scientific socialism is connected with?





50. The plants and vegetations of a region is known as?





51. Deforestation is primarily caused by?





52. Which disease is NOT caused by bacteria?





53. Aviophobia is the fear of?





54. Brontophobia is the fear of?





55. Which synthetic fiber is known as artificial Silk?





56. Which of the following matter are first discovered by man?





57. Which of the following gas is lighter than air?





58. Which form of phosphor is used in safety matches?





59. The element present in large amount of rock and mineral?





60. The climate of Pakistan is mostly_____________?





61. Meteorology is study of _____?





62. The most abundant element in earth crust is _____?





63. Which digestive enzyme is secreted by the salivary glands?





64. Hydrogen, methane, and carbon monoxide are components of which of the following?





65. False ceiling (also called a drop ceiling or suspended ceiling) is done to?





66. A ball is thrown vertically upward. What is the velocity of the ball when it reaches its maximum height?





67. Soil erosion is caused by?





68. Which of the following is a mineral acid?





69. Which of the following is not a primary color?





70. Which scientific field helps in understanding Quranic words?





71. The most abundant metal in the Earth’s crust is _____?





72. The locomotory organ of Chlamydomonas is ______?





73. Which of the following is not a digestive gland?





74. Global warming or climate change can cause ____?





75. In soft drinks, the solvent used is _____?





76. Which organ helps in producing digestive enzyme?





77. How many pairs of spinal nerves are there in the human spinal cord?





78. In a solution, when water is used as a solvent that solution is called?





79. What is the blood circulation rate in human arteries?





80. Marble cancer to the Taj Mahal is caused by?





81. Who was the first Muslim woman ruler of India?





82. The most abundant gas in the atmosphere is?





83. The unit of frequency is?





84. Which of the following planets is called the “Morning Star”?





85. Who was the first Prime Minister of Pakistan?





86. Which vitamin is essential for blood clotting?





87. The smallest unit of an element that retains its properties is called?





88. The fastest land animal is?





89. Who is the author of “Origin of Species”?





90. Which is the largest ocean in the world?





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