Post Utme Chemistry Questions
Question 486:
The metal commonly existing as a liquid at room temperature is:
- A Aluminum metallic element
- B Mercury metallic element
- C Sodium metallic element
- D Calcium metallic element
Question 487:
Metals are described as ductile mainly because they:
- A Produce acidic oxides
- B Dissolve inside water
- C Break under pressure
- D Form wires easily
Question 488:
A major reason alloys are produced is to:
- A Reduce metal conductivity
- B Increase metal brittleness
- C Improve metallic properties
- D Remove metallic strength
Question 489:
The colour of chlorine gas is commonly described as:
- A Bright orange vapour
- B Colourless transparent gas
- C Greenish yellow colour
- D Dark blue vapour
Question 490:
Oiling machine parts helps reduce corrosion mainly by:
- A Removing protective layers
- B Preventing moisture contact
- C Producing acidic substances
- D Increasing metallic reactivity