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PPSC Science Past Papers  MCQs 2004 to 2020

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1. The deficiency of Vitamin A causes?





2. Which of the following glands secretes tears in human body?





3. Animal which captures and readily kills living animals for its food is called?





4. The number of spark plugs needed in a diesel engine is?





5. The equation E=mc² is associated with?





6. Herbivores eat only?





7. Deficiency of Iodine causes?





8. The main constituent of Biogas is?





9. Elements are grouped together according to their atomic number in a table. What is this table called?





10. What are Cyclones?





11. The Planet which revolves slowly around the Sun is?





12. In the manufacture of banaspati ghee, the gas used is?





13. What is the freezing point of heavy water?





14. The latitude of the Equator is?





15. Bodies which usually fall from sky to the earth are called?





16. Constellation of seven bright stars is known as?





17. Study of earth is known as?





18. The number of bones in a newborn baby is?





19. What is the weight of the average human brain?





20. Who proposed the Theory of Evolution?





21. Which type of cells protect the body from infectious diseases and foreign invaders?





22. White blood cells also called leukocytes fight against?





23. Benjamin Franklin an American invented?





24. Astronomy is the study of?





25. Stethoscope was invented by?





26. Which particle has more penetrating power among these?





27. John Logie Baird is known for his invention of?





28. The process by which metal surface is coated with thin layer of zinc is called?





29. Photosynthesis in plants takes place faster in?





30. Light travels in a vacuum at the speed of?





31. Which one of the following is the second largest planet in our solar system?





32. Which of the following is a man-made substance?





33. What is the Circumference of Earth?





34. Which of the following is not essential for plants?





35. The Lifespan of White Blood Cells is?





36. The birds who feed marine food remove salt by which gland?





37. Electromagnetic waves were discovered by?





38. Which of the following is the form of marble?





39. Which of the following is not a natural fibre?





40. Interferon is?





41. What will happen if the ozone layer disappears?





42. Which one of the following is the main reason of heart attack?





43. The most efficient engine is?





44. What is an average age of horse?





45. Eugenics is the science of improving which species by breeding out disease and disabilities?





46. Dead plants on the surface of water and oxygen depletion of the water body is called?





47. Which instrument is used to measure height of aircraft above ground?





48. Mirage is an example of?





49. Stainless steel is an alloy of?





50. Thermometer was invented by?





51. Blood clotting in humans is because of which vitamin?





52. Insulin is secreted in the human body by?





53. Which is the heaviest planet in the solar system?





54. Which animal is called the “Ship of the Desert”?





55. Which organ of the human body is affected by Hepatitis?





56. Which gas is essential for breathing?





57. Who is known as the father of modern physics?





58. The chemical formula of water is?





59. Which vitamin is produced in the human body with the help of sunlight?





60. Which instrument is used to measure atmospheric pressure?





61. Which organ purifies blood in the human body?





62. Which planet is known as the “Red Planet”?





63. The hardest natural substance on Earth is?





64. Which organ of the human body controls balance?





65. Which gas is used for photosynthesis in plants?





66. The boiling point of water on Celsius scale is?





67. Which blood group is called the “Universal Donor”?





68. Who discovered gravity?





69. Which is the largest ocean in the world?





70. The smallest planet in our solar system is?





71. Which metal is liquid at room temperature?





72. Which vitamin prevents night blindness?





73. The instrument used to measure earthquakes is?





74. Which is the fastest land animal?





75. Which blood group is called the “Universal Recipient”?





76. What is the chemical symbol of Gold?





77. Which gas is filled in balloons?





78. The largest desert in the world is?





79. Who invented the telephone?





80. Which is the largest organ of the human body?





81. Which gas is known as laughing gas?





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





83. The study of earthquakes is called?





84. The nearest planet to the Sun is?





85. Which gas is known as the “ozone layer protector”?





86. Who proposed the theory of evolution by natural selection?





87. Which instrument is used to measure temperature?





88. The national bird of Pakistan is?





89. Which is the largest continent in the world?





90. Which planet is known as the “Morning Star” or “Evening Star”?





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