In which state does the element phosphorus exist at room temperature?

Which metal is stored in kerosene?

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

Compound $X$ and aluminium are used to join railway tracks.
$(a)$ Identify the compound $X$.
$(b)$ Name the reaction.
$(c)$ Write down its chemical reaction.

Give one most suitable word for the following statements.
$(a)$ Metal oxides which show basic as well as acidic behaviour.
$(b)$ Iodine,a non-metal is shining.

In the $Bayer$ process,what is obtained when concentrated $NaOH$ is added to bauxite?