Post Utme Chemistry Questions
Question 471:
Slag produced inside the blast furnace mainly consists of:
- A Iron carbonate compound
- B Sodium chloride compound
- C Calcium silicate compound
- D Copper sulfate compound
Question 472:
Mercury differs from many metals because mercury is:
- A Poor electrical conductor
- B Highly brittle naturally
- C Liquid at room temperature
- D Completely nonreactive metal
Question 473:
Iron objects kept in dry air rust very slowly because dry air:
- A Removes metallic coatings
- B Prevents oxygen contact
- C Contains little moisture
- D Produces acidic gases
Question 474:
Sodium corrodes rapidly in moist air mainly because sodium:
- A Conducts heat efficiently
- B Forms protective oxide coatings
- C Is highly reactive chemically
- D Possesses strong metallic bonds
Question 475:
Rusting can be described generally as:
- A Corrosion of iron
- B Reduction of metals
- C Purification of ores
- D Formation of alloys