For the question The poorest conductor of heat among metal is the options are
A. Lead
B. Copper
C. Zinc
D. Mercury
The answer is Lead. Among metals: Copper & Zinc are good conductors. Mercury metal is a poor conductor while Lead is the poorest conductor.
What is the best and poorest conductor of heat
Silver (Ag) is the best conductor of heat and lead (Pb) is the poorest conductor of heat