This quiz works best with JavaScript enabled. Home > Science > General Science – Quiz 256 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books General Science Quiz 256 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What percent of fire-related deaths are due to smoke inhalation rather than burns? A) 10%. B) 50%. C) 80%. D) 99%. Show Answer Correct Answer: C) 80%. 2. What is Half-life? A) The amount of time it takes for some of the nuclei in a sample of the isotope to decay. B) The amount of time it takes for half the electrons in a sample of the isotope to decay. C) The amount of time it takes for half the nuclei in a sample of the isotope to decay. D) The amount of time it takes to double the nuclei in a sample of the isotope to decay. Show Answer Correct Answer: C) The amount of time it takes for half the nuclei in a sample of the isotope to decay. 3. These are the cause of the change of these A) Electron Number. B) Proton number. C) Neutron number. D) None of above. Show Answer Correct Answer: C) Neutron number. 4. What characterists do mammals have? A) Wet and smooth skin. B) Feathers and wings. C) Have fur/hair. D) Gills to breathe. Show Answer Correct Answer: C) Have fur/hair. 5. Rocks that cool slowly are more likely to..... A) Form large crystals. B) Form small crystals. Show Answer Correct Answer: A) Form large crystals. 6. Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed? A) 0 %. B) 25%. C) 50%. D) 75%. Show Answer Correct Answer: B) 25%. 7. Earth's atmosphere is held down by A) Radiation. B) Gravity. C) Magnetism. D) Conduction. Show Answer Correct Answer: B) Gravity. 8. Recording the location of a star requires a measurement of..... A) Altitude. B) Azimuth. C) Time. D) All of the above. Show Answer Correct Answer: D) All of the above. 9. ..... carry messages to and from the skin and other sense organs. A) Motor nerves. B) Sensory nerves. C) Avno nerves. D) Toomeni nerves. Show Answer Correct Answer: B) Sensory nerves. 10. How many days are there in a normal year? A) 28. B) 29. C) 365. D) 12. Show Answer Correct Answer: C) 365. 11. ..... Carpal bones are arranged in two irregular rows of four bones each wrist. A) 5. B) 6. C) 4. D) 8. Show Answer Correct Answer: D) 8. 12. What is pressure? A) A measure of the degree of hotness of the air. B) A measure of the amount of water vapor in the air. C) The horizontal movement of air. D) The force of the air on a given surface divided by the area of that surface. Show Answer Correct Answer: D) The force of the air on a given surface divided by the area of that surface. 13. A close living situation between 2 species where at least one benefits is called A) Community. B) Symbiosis. C) Association. D) Mutual relationship. Show Answer Correct Answer: B) Symbiosis. 14. Comets can be found in a region of the solar system called the..... A) Kuiper belt. B) Dwarf Pluto. C) The ring saturn. D) None of the above. Show Answer Correct Answer: A) Kuiper belt. 15. The majority of the energy on Earth comes from the sun, but small amounts come from..... A) Radioactive decay. B) Other stars. C) Methane from cow farts. D) Constant wind. Show Answer Correct Answer: A) Radioactive decay. 16. What is the term for the temperature at which a liquid changes to a solid? A) Melting point. B) Boiling point. C) Freezing point. D) Condensation point. Show Answer Correct Answer: C) Freezing point. 17. Most fossils are created from the soft parts of an organism. A) True. B) False. Show Answer Correct Answer: B) False. 18. Which is not an example of a lipid? A) Oil. B) Wax. C) Sugar. D) Fat. Show Answer Correct Answer: C) Sugar. 19. Cattail is an emergent plant. A) TRUE. B) FALSE. Show Answer Correct Answer: A) TRUE. 20. The following is what type of reaction:NH3 + HCl $\rightarrow$ NH4Cl A) Synthesis. B) Decomposition. C) Single Replacement Replacement. D) Double Replacement Replacement. Show Answer Correct Answer: A) Synthesis. ← 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