Question

Which among the following has the lowest ability to conduct heat?

• A. Lead
• B. Gold
• C. Silver
• D. Platinum

Answer 1

The correct option is A

Lead

Explanation for correct option:

A. Lead

Metals:

• Metals are substances having properties such as malleability/ductility/sonority/conductivity/lustre/solidness.
• Metals are usually malleable as well as ductile in nature.
• Lead is very malleable/ductile as well as dense metal but it is a poor conductor of electricity and heat.
• Lead$\left(\mathrm{Pb}\right)$ readily reacts with the atmosphere to form a lead oxide which does not allow electricity and heat to pass through it.

Explanation for incorrect options:

Metals such as Gold$\left(\mathrm{Au}\right)$, Silver$\left(\mathrm{Ag}\right)$, and Platinum$\left(\mathrm{Pt}\right)$ are good conductors of heat and electricity. Thus, options B, C, and D are incorrect.

Hence, the correct option is A i.e. Lead.