Q. The composition of electrician solder is

(A) Lead-37%, tin-63%
(B) Iron-37%, tin-63%
(C) Lead-37%, Steel-63%
(D) Steel-37%, copper-63%

✅ Correct Answer: (A) Lead-37%, tin-63%

Published by Mr. Dubey ⭐ 111.22K Points at 05-Apr-2022 07:01 pm in Physics

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