Basic Chemistry questions for senior secondary school students–You have 20 questions all together.The number of questions will be updated on a weekly basis.
#1. The following compounds are hydrocarbons EXCEPT
#2. 100g of radioactive mass has a half-life of 5 days. Calculate the mass decayed off after 15 days
#3. These are basic particles from which matter could be made EXCEPT
#4. Which of the following properties increases dawn a group in the periodic table?
#5. Which of the following properties increases dawn a group in the periodic table?
#6. What is the first element on the periodic table?
#7. What is the chemical symbol for gold?
#8. The nitrifying bacteria , nitrosomonas, convert amonia to …
#9. The atomic mass of an element is mostly due to the mass of
#10. The following oxides react with both acids and bases to form salts except
#11. What is H20 more commonly known as?
#12. Chemistry can be applied in the following fields EXCEPT
#13. The chemical formular for sand is
#14. Zinc Oxide is a
#15. 43. Calculate the mass of sodium hydroxide in 5.00dm3 of a 0.125mol dm-3 Solution
#16. What is the role of MnO¬2 in the reaction represented by the following equation? MnO2 + 4Hcl→
#17. Metals which react with steam only when they are red-hot include
#18. The periodic classification of elements is an arrangement of the elements in order of their
#19. In the reaction between sodium hydroxide and sulphuric acid solutions, what volume of 0.5 molar sodium hydroxide would exactly neutralise 10cm3 of 1.25 molar sulphuric acid?
#20. When sodium chloride and metallic sodium are each dissolved in water