Q. Which of the following is correct?
A) Duralumin : $Al\ + \ Cu\ + \ Mg\ + \ Ag$
B) German silver: $Cu\ + \ Zn\ + \ C$
C) Gun metal: $Cu\ + \ Zn\ + \ Sn$
D) Solder : $Pb\ + \ Al$
Explanation
(c)
Gun metal has a composition of Cu=88%
Sn=10%, Zn=2%
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.