Which of the following metals is a poor conductor of heat and electricity?

Which of the following is not a metalloid?

Name one metal and one non-metal that are found in a liquid state at room temperature.

Name one metal and one non-metal that exist in liquid state at room temperature. Also,name two metals having a melting point less than $310\ K$ $(37\ ^\circ C)$.

Which of the following elements is a semiconductor?

Name two metals which have very low melting points.