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Chemistry Questions and Answers

General Science
17. The oxide ore of iron is
 
  • A. haematite
  • B. cinnabar
  • C. pyrolusite
  • D. bauxite
 
 
18. Which gas is used in the preparation of soda water?
 
  • A. carbon monoxide
  • B. carbon dioxide
  • C. ammonia
  • D. chlorine
 
19. The most common ore of Aluminium is
 
  • A. felspar
  • B. cryolite
  • C. bauxite
  • D. haematite
 
20. Match stick head contains
 
  • A. red phosphorous
  • B. white phosphorous
  • C. scarlet phosphorous
  • D. black phosphorous