Selected MCQ

Current Question
Which metal is corrosion resistant?
  • A. Iron
  • B. Aluminum
  • C. Copper
  • D. Zinc
Correct Answer: B
Explanation:
Aluminum forms protective oxide.
Related Question 1
Which bond is metallic?
  • A. Electron sharing
  • B. Electron transfer
  • C. Electron sea
  • D. Hydrogen bonding
Correct Answer: C
Explanation:
Metallic bonding involves delocalized electrons.
Related Question 2
Which metal is least reactive?
  • A. Sodium
  • B. Potassium
  • C. Gold
  • D. Calcium
Correct Answer: C
Explanation:
Gold is inert.
Related Question 3
Which metal is reactive?
  • A. Gold
  • B. Silver
  • C. Sodium
  • D. Platinum
Correct Answer: C
Explanation:
Sodium is highly reactive.
Related Question 4
Which metal is best conductor?
  • A. Iron
  • B. Copper
  • C. Silver
  • D. Gold
Correct Answer: C
Explanation:
Silver has highest conductivity.
Related Question 5
The work function of a metal is the minimum energy required to:
  • A. Move electrons inside metal
  • B. Remove an electron from surface
  • C. Excite nucleus
  • D. Ionize gas
Correct Answer: B
Explanation:
Work function is threshold energy for electron emission.