Question:
The INCORRECT statement is :
Correct Option: , 4
Solution:
(a) Bronze contains $88-96 \% \mathrm{Cu}$ and 4-12\% Sn.
(b) Cast iron is used to make wraught iron.
(c) German silver contains $50 \% \mathrm{Cu}, 30 \% \mathrm{Zn} \& 20 \% \mathrm{Ni}$.
(d) Brass contains $70 \% \mathrm{Cu}$ and $30 \% \mathrm{Zn}$.
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