Which metal can be beaten into very thin foils?

Which element forms the basis of components like vitamins,proteins,and carbohydrates?

An electrolytic cell consists of:
$(i)$ Positively charged cathode
$(ii)$ Negatively charged anode
$(iii)$ Positively charged anode
$(iv)$ Negatively charged cathode

Which process occurs at the cathode during the process of electrolysis?

Give reasons for the following:
$(i)$ Carbon can reduce zinc oxide to zinc but not calcium oxide to calcium.
$(ii)$ Copper and aluminium wires are usually used for electricity transmission.

In the presence of which catalyst is sulphur dioxide heated at high temperature to form sulphur trioxide?