Post Utme Chemistry Questions
Question 476:
Limestone is added into the blast furnace mainly to:
- A Produce hydrogen gas
- B Reduce furnace temperature
- C Remove silica impurities
- D Increase oxygen supply
Question 477:
The least reactive group of elements in the periodic table is:
- A Noble gas group
- B Transition metal group
- C Halogen element group
- D Alkali metal group
Question 478:
A major disadvantage of iron corrosion is:
- A Improving heat conductivity
- B Increasing metallic strength
- C Weakening metal structures
- D Producing useful alloys
Question 479:
Iodine differs from chlorine because iodine exists mainly as:
- A Conductive metallic liquid
- B Dark solid crystals
- C Greenish poisonous gas
- D Colourless atmospheric gas
Question 480:
The abbreviation Pb represents the metal:
- A Platinum metallic element
- B Palladium metallic element
- C Potassium metallic element
- D Lead metallic element