This quiz works best with JavaScript enabled. Home > Science > General Science – Quiz 221 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books General Science Quiz 221 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the lowest main layer of Earth's atmosphere? A) Thermosphere. B) Troposphere. C) Stratosphere. D) Mesosphere. Show Answer Correct Answer: B) Troposphere. 2. The closed loop in which water moves around the surface of the earth. A) The hydrologic cycle. B) The atmospheric cycle. C) The jet stream. D) Ocean currents. Show Answer Correct Answer: A) The hydrologic cycle. 3. The Great Wall of China is visible from the Moon. A) True. B) False. Show Answer Correct Answer: B) False. 4. Melting ice is an example of A) Physical change. B) Chemical change. Show Answer Correct Answer: A) Physical change. 5. What is a simple machine? A) A device that has only one working motor. B) A device that makes work easier. C) A device that makes more work for a job. D) Device that is made up of two or more machines. Show Answer Correct Answer: B) A device that makes work easier. 6. A taxi driver with a passenger drives by a man selling hot dogs. Which person observes that the taxi driver is moving? A) The passenger. B) The hot dog seller. Show Answer Correct Answer: B) The hot dog seller. 7. We should unplug things when there is a storm. A) True. B) False. Show Answer Correct Answer: A) True. 8. ..... helps pump blood through the entire body. A) Lungs. B) Kidneys. C) Heart. D) Brain. Show Answer Correct Answer: C) Heart. 9. This identifies how many years have passed between the time the original work was written and the time of the first known copy as well as how many different copies have been made by different people. A) Internal Test. B) External Test. C) Bibliographic Test. D) Dedrochronoly. Show Answer Correct Answer: C) Bibliographic Test. 10. Choose the uses of friction A) Causing difficulty in sliding a heavy box. B) Friction allows us to light a matchstick. C) Friction gives rise to heat that is unwanted. D) Friction causes wear and tear of things. Show Answer Correct Answer: B) Friction allows us to light a matchstick. 11. Which of the following describes the correct short-term storage for liquid-fillepH probes?d A) Store the pH probes in distilled water. B) Store the pH probes on a dry shelf. C) Store the pH probes in a potassium chloride solution. D) Store the pH probes in hydrochloric acid. Show Answer Correct Answer: C) Store the pH probes in a potassium chloride solution. 12. In a parallel circuit you can remove a light bulb and the others will keep shining. A) True. B) False. Show Answer Correct Answer: A) True. 13. The gas present in Pepsi is..... A) Hydrogen. B) Oxygen. C) Carbon dioxide. D) Nitrogen. Show Answer Correct Answer: C) Carbon dioxide. 14. The.....of rocks is the numerical age and real age of rocks. A) Relative age. B) Half-life. C) Absolute age. D) Earth age. Show Answer Correct Answer: C) Absolute age. 15. Where will be the images of the Sun or the moon are formed by a concave mirror? A) Focus. B) Pole. C) Centre of curvature. D) Beyond centre of curvature. Show Answer Correct Answer: A) Focus. 16. The percentage of carbon in our body is? A) 30%. B) 78%. C) 18%. D) 10%. Show Answer Correct Answer: C) 18%. 17. These form when dripping groundwater deposits sediments A) Weathering. B) Stalagmites. C) Sedimentary rock. D) Stalactites. Show Answer Correct Answer: D) Stalactites. 18. On what axis should the independent variable always be? A) X. B) Y. Show Answer Correct Answer: A) X. 19. Parts numbered in the title block can be located on the drawing by finding the numbers in squares along the A) Lower border. B) Upper border. C) Centerline border. D) None of above. Show Answer Correct Answer: A) Lower border. 20. Question A) Step 3 of Scientific Method. B) Step 2 of Scientific Method. C) Step 1 of the Scientific Method. D) Step 4 of Scientific Method. E) Step 6 of Scientific Method. Show Answer Correct Answer: C) Step 1 of the Scientific Method. ← PreviousNext →Related QuizzesGeneral Science Quiz 1General Science Quiz 2General Science Quiz 3General Science Quiz 4General Science Quiz 5General Science Quiz 6General Science Quiz 7General Science Quiz 8General Science Quiz 9General Science Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books