In reaction, a more reactive element displaces a less reactive element from a compound.

${\mathrm{Fe}}_2{\mathrm{O}}_3+2\mathrm{Al}\to {\mathrm{Al}}_2{\mathrm{O}}_3+2\mathrm{Fe}$

The above reaction is an example of

Give balanced chemical equation for following reaction-

${\mathrm{Fe}}_2{\mathrm{O}}_3 + 2\mathrm{Al} \stackrel{ }{\to } {\mathrm{Al}}_2{\mathrm{O}}_3 + \mathrm{Fe}$

The reaction of iron nail with copper sulphate solution is _____ reaction. 

${\mathrm{Fe}}_2{\mathrm{O}}_3+2\mathrm{Al}\to {\mathrm{Al}}_2{\mathrm{O}}_3+2\mathrm{Fe}$

The type of the above reaction is:

Which of the following reaction does not takes place? State the reason.

(i) ${\mathrm{FeSO}}_4 + \mathrm{Mg} \stackrel{}{\to }{\mathrm{MgSO}}_4 + \mathrm{Fe}$  

(ii) ${\mathrm{ZnSO}}_4 + \mathrm{Cu} \stackrel{}{\to }{\mathrm{CuSO}}_4 + \mathrm{Zn}$ 

The reaction of the iron nail with copper sulphate solution is a _____ reaction. 

${\mathrm{Fe}}_2{\mathrm{O}}_3 +2\mathrm{Al} \to {\mathrm{Al}}_2{\mathrm{O}}_3 +2\mathrm{Fe}$

The above reaction is an example of a

Taking into consideration the relationship in the first pair, complete the second pair: 

$2{\mathrm{H}}_2+{\mathrm{O}}_2\to 2{\mathrm{H}}_2\mathrm{O}$: Combination reaction: $2\mathrm{HgO}\to 2\mathrm{Hg}+{\mathrm{O}}_2$: _____.

Complete the given chemical reaction: 

${\mathrm{CuSO}}_4\left(\mathrm{aq}\right)+\mathrm{Fe}\left(\mathrm{s}\right)\to \mathrm{\_\_\_\_\_} +\mathrm{\_\_\_\_\_}$.

Name the type of reaction. 

${\mathrm{Fe}}_2{\mathrm{O}}_3+2\mathrm{Al}\to {\mathrm{Al}}_2{\mathrm{O}}_3+2\mathrm{Fe}$

The above reaction is an example of a