In the Pb-Sn system, the fraction of total a phase is 3 times the fraction of b phase at eutectic temperature of 182°C, Pb with 19% Sn dissolved in it, Sn with 2.5% Pb dissolved in it, and liquid is in equilibrium. The alloy compositions of tin (Sn) and lead (Pb) are nearly

In the Pb-Sn system, the fraction of total a phase is 3 times the frac

1.	In the Pb-Sn system, the fraction of total a phase is 3 times the fraction of b phase at eutectic temperature of 182°C, Pb with 19% Sn dissolved in it, Sn with 2.5% Pb dissolved in it, and liquid is in equilibrium. The alloy compositions of tin (Sn) and lead (Pb) are nearly
A.	28.6% and 71.4%
B.	38.6% and 61.4%
C.	48.6% and 51.4%
D.	58.6% and 41.4%
Answer» C. 48.6% and 51.4%

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In the Pb-Sn system, the fraction of total a phase is 3 times the fraction of b phase at eutectic temperature of 182°C, Pb with 19% Sn dissolved in it, Sn with 2.5% Pb dissolved in it, and liquid is in equilibrium. The alloy compositions of tin (Sn) and lead (Pb) are nearly

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