Question

post-test
all of the following are advantages of using aluminum except:
a. durability.
b. reduced weight.
c. easy to repair.
d. corrosion resistance.

Explanation:

To solve this, we analyze each option:

• Durability: Aluminum is durable, so this is an advantage.
• Reduced weight: Aluminum is lightweight, so this is an advantage.
• Easy to repair: Aluminum is not easy to repair (e.g., welding aluminum is more complex than steel), so this is not an advantage.
• Corrosion resistance: Aluminum has good corrosion resistance (forms a protective oxide layer), so this is an advantage.

Answer:

C. Easy to repair