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Which one of the following pairs of metals are very good conductors of

June 1, 2025 by rawan239

Which one of the following pairs of metals are very good conductors of heat ?

Silver and Copper

Silver and Lead

Copper and Mercury

Lead and Mercury

This question was previously asked in

UPSC CDS-2 – 2022

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Heat conductivity is the ability of a material to conduct heat. Metals are generally good conductors of heat. Among common metals, silver is the best conductor of heat, followed closely by copper. Both silver and copper are widely used in applications where high thermal conductivity is required. Lead and mercury, while metals, are significantly poorer conductors of heat compared to silver and copper. Therefore, the pair of metals that are very good conductors of heat is Silver and Copper.

Silver and Copper are excellent conductors of heat.

Thermal conductivity values (approximate, W/(m·K) at room temperature): Silver (~429), Copper (~401), Aluminum (~205), Iron (~80), Lead (~35), Mercury (~8.3). This data confirms that Silver and Copper are indeed among the best heat conductors.

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