Post Utme Chemistry Questions
Question 491:
Rusting of iron occurs faster in coastal regions because seawater:
- A Reduces atmospheric oxygen
- B Forms protective coatings
- C Prevents water evaporation
- D Contains dissolved salts
Question 492:
The chemical abbreviation for iron is:
- A Fe metallic symbol
- B Ir metallic symbol
- C Fr metallic symbol
- D In metallic symbol
Question 493:
The reddish brown substance formed during rusting is mainly:
- A Iron sulfate compound
- B Hydrated iron oxide
- C Iron carbonate compound
- D Iron chloride compound
Question 494:
One condition necessary for rusting of iron is the presence of:
- A Nitrogen atmospheric gas
- B Atmospheric oxygen gas
- C Carbon monoxide gas
- D Noble gaseous elements
Question 495:
Group II metals usually contain:
- A Eight outer electrons
- B Seven outer electrons
- C One outer electron
- D Two outer electrons