Which of the following methods is suitable for preventing an iron frying pan from rusting ?

Why do ionic compounds have high melting points ?

Define the following terms.

$(i)$ Mineral       $(ii)$ Ore         $(iii)$ Gangue

What chemical process is used for obtaining a metal from its oxide ?

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be

Give an example of a metal which

$(i)$ is a liquid at room temperature.

$(ii)$ can be easily cut with a knife.

$(iii)$ is the best conductor of heat.

$(iv)$ is a poor conduct of heat.