Question

In which case the thermal conductivity increases from left to right

• A. Al, Cu, Ag
• B. Ag, Cu, Al
• C. Cu, Ag, Al
• D. Al, Ag, Cu

Answer 1

Answer: (A)

Al, Cu, Ag

Answer 2

$Cu$ is better conductor than $Al$ and $Ag$ is better conductor than $Cu$. Hence conductivity in increasing order is $Al < Cu < Ag$.