1.

Gun metal which is used in Journal bearing contains

A. 88% Cu, 10% Sn, 2% Zn
B. 80% Cu, 10% Zn, 10% Al
C. 85% Cu, 5% Mg, 10% Al
D. 85% Cu, 5% Sn, 10% Pb
Answer» B. 80% Cu, 10% Zn, 10% Al


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