Question

In construction work, the alloy duralumin is used rather than pure aluminium because :

• A. duralumin is light and strong.
• B. duralumin is corrosion resistant
• C. duralumin has high tensile strength.
• D. All of these

Answer 1

Answer: (D)

All of these

In construction work, duralumin is used rather than pure aluminium due to following reasons:

(a) Aluminium is light and not strong but duralumin is light and strong.

(b) Aluminium is attacked by moist air whereas duralumin is unaffected by moist air.

(c) Aluminium undergo corrosion whereas duralumin is corrosion resistant.

(d) Aluminium has low tensile strength whereas duralumin has high tensile strength.