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Q28 (IAS/2006) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Applied everyday chemistry Answer Verified

Which are the materials generally employed as solder in soldering operations in electronics?

Result
Your answer: —  Â·  Correct: B
Explanation

The standard solder used in electronics is an alloy of lead (Pb) and tin (Sn). Textbook descriptions identify solder explicitly as a lead–tin alloy used for joining electrical wires and components because of its suitably low melting point and good wetting properties for metals [1]. Industry and practical guides likewise state that traditional electronic solders were mixtures of tin and lead (commonly 60/40 or 63/37 Sn/Pb) with melting points around ~180 °C, making them easy to work with; lead-free alternatives are now increasingly used but the classic choice remains tin–lead alloy for general electronic soldering.

Sources

  1. [1] Science , class X (NCERT 2025 ed.) > Chapter 3: Metals and Non-metals > QUESTIONS > p. 54
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