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Chemistry MCQs

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1. What is the chemical symbol for the element gold?





2. Which of the following is NOT a noble gas?





3. What is the chemical formula for water?





4. Which subatomic particle has a negative charge?





5. What type of bond is formed when electrons are shared between atoms?





6. What is the atomic number of carbon?





7. Which gas is produced during photosynthesis?





8. What is the pH value of pure water?





9. Which element is essential for human respiration?





10. What is the chemical formula for methane?





11. Which gas is commonly known as laughing gas?





12. What is the main component of natural gas?





13. Which chemical element has the symbol “Fe”?





14. What is the chemical formula for sodium chloride?





15. What is the chemical symbol for potassium?





16. Which gas is produced when vinegar and baking soda are mixed?





17. What is the molecular formula for glucose?





18. Which element has the atomic number 1?





19. What is the chemical formula for sulfuric acid?





20. Which metal is liquid at room temperature?





21. What is the chemical formula for ammonia?





22. What is the process of conversion of a solid directly into vapor called?





23. Which metal is an essential component of hemoglobin?





24. What is the chemical symbol for silver?





25. What is the lightest element in the periodic table?





26. Which of the following is a greenhouse gas?





27. What is the chemical formula for hydrogen peroxide?





28. What is the chemical symbol for lead?





29. Which of the following is NOT a noble gas?





30. What is the chemical formula for table salt?





31. Which element has the chemical symbol “He”?





32. What is the chemical formula for methane?





33. Which gas is essential for photosynthesis?





34. What is the chemical formula for water?





35. Which element has the symbol “Fe”?





36. What is the atomic number of carbon?





37. Which gas has the chemical formula “CO2”?





38. What is the pH value of pure water?





39. Which gas is produced during cellular respiration?





40. What is the chemical formula for methane?





41. Which gas is commonly used in balloons to make them float?





42. What is the chemical formula for sodium chloride?





43. What is the chemical symbol for potassium?





44. Which gas is produced when vinegar and baking soda are mixed?





45. What is the molecular formula for glucose?





46. Which element has the atomic number 1?





47. What is the chemical formula for sulfuric acid?





48. Which metal is liquid at room temperature?





49. What is the chemical formula for ammonia?





50. What is the process of conversion of a solid directly into vapor called?





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