FPSC Online MCQS Test Preparation

GK Science

FPSC Online MCQS Test Preparation 20 Science General Knowledge Questions Answers for competitive exams online preparation. Science gk solved questions tests.

  1. What is a non-metallic mineral?
  2. What type of radiation does the ozone layer prevent from entering the atmosphere?
  3. What causes the phenomenon of Aurora Borealis, the display of red and green lights in the northern hemisphere?
  4. Why is yeast used in making bread?
  5. With which geographical feature is an oasis associated?
  6. What principle does quartz crystal in quartz watches operate on?
  7. What are fruits without seeds, like bananas, called?
  8. What is an animal that captures and readily kills living animals for food called?
  9. Why are two rails in a railway track joined end to end with a gap in between?
  10. What is the famous book of Ibn-Sina in which he discussed human physiology and medicine called?
  11. What is an organic molecule needed by the body in small amounts?
  12. What is the last structure through which inhaled air passes?
  13. What is a form of sexual reproduction?
  14. Is cobalt strongly attracted, weakly attracted, or not attracted by a magnet?
  15. What are the two elements that make up laughing gas (nitrous oxide)?
  16. How is Hepatitis A transmitted to different individuals?
  17. Which unit of the computer system coordinates different devices?
  18. What is the most abundant element in the human body?
  19. How can cancer be treated?
  20. From which compound do animals mainly obtain carbon dioxide?


Answer Key:


  1. A non-metallic mineral is a mineral that does not contain metal elements.
  2. The ozone layer prevents ultraviolet radiation from entering the atmosphere.
  3. The phenomenon of Aurora Borealis, the display of red and green lights in the northern hemisphere, is due to radiations from the ionosphere.
  4. Yeast is used in making bread because it produces carbon dioxide, which helps the bread rise.
  5. An oasis is associated with a desert.
  6. Quartz crystal in quartz watches operates on the principle called the piezoelectric effect.
  7. Parthenocarpic fruits
  8. Predator
  9. Accidents due to expansion in summer can be avoided
  10. Al-Qanoon
  11. Vitamin C
  12. Bronchiole
  13. Hermaphroditism
  14. Weakly attracted by a magnet
  15. Nitrogen and Oxygen
  16. Feces
  17. Control unit
  18. Oxygen
  19. Chemotherapy and radiotherapy
  20. Glucose

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