Give two examples each of metals that are good conductors and poor conductors of heat,respectively.

Which non-metal element is a conductor of electricity?

Bronze is an alloy of:

From amongst the metals sodium,calcium,aluminium,copper and magnesium,name the metal:
$(i)$ which reacts with water only on boiling,and
$(ii)$ another which does not react even with steam.

What effect does dihydrogen gas $(H_2)$ have on litmus paper?

Which metal is the least reactive?