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.

Which one of the following metals does not react with cold as well as hot water?

Which metal does not react with oxygen even at high temperatures?

Study the reactions given below. State which of the following chemical reactions will take place or not,giving suitable reason for each:
$(a)$ $Zn(s) + CuSO_4(aq) \rightarrow ZnSO_4(aq) + Cu(s)$
$(b)$ $Fe(s) + ZnSO_4(aq) \rightarrow FeSO_4(aq) + Zn(s)$
$(c)$ $Zn(s) + FeSO_4(aq) \rightarrow ZnSO_4(aq) + Fe(s)$

Which one of the following four metals would be displaced from the solution of its salts by the other three metals?

Stainless steel is a very useful material in our daily life. In stainless steel,iron is mixed with: