State two ways to prevent the rusting of iron.
State two ways to prevent the rusting of iron.
Two ways to prevent the rusting of iron are :
$(i)$ Oiling, greasing, or painting : By applying oil, grease, or paint, the surface becomes water proof and the moisture and oxygen present in the air cannot come into direct contact with iron. Hence, rusting is prevented.
$(ii)$ Galvanisation : An iron article is coated with a layer of zinc metal, which prevents the iron to come in contact with oxygen and moisture. Hence, rusting is prevented.
Similar Questions
Which gas is produced when dilute hydrochloric acid is added to a reactive metal? Write the chemical reaction when iron reacts with dilute $H_2SO_4$.
Which gas is produced when dilute hydrochloric acid is added to a reactive metal? Write the chemical reaction when iron reacts with dilute $H_2SO_4$.
Name two metals which are found in nature in the free state.
Name two metals which are found in nature in the free state.
What chemical process is used for obtaining a metal from its oxide ?
What chemical process is used for obtaining a metal from its oxide ?
Which metals do not corrode easily ?
Which metals do not corrode easily ?
Samples of four metals $A$, $B$, $C$ and $D$ were taken and added to the following solution one by one. The results obtained have been tabulated as follows.
Metal
Iron $(II)$ sulphate
Cooper $(II)$ sulphate
zinc sulphate
Silver nitrate
$A.$
No reaction
Displacement
$B.$
Displacement
No reaction
$C.$
No reaction
No reaction
No reaction
Displacement
$D.$
No reaction
No reaction
No reaction
No reaction
Use the Table above to answer the following questions about metals $A$, $B$, $C$ and $D$.
$(i)$ Which is the most reactive metal ?
$(ii)$ What would you observe if $B$ is added to a solution of Copper $(II)$ sulphate ?
$(iii)$ Arrange the metals $A$, $B$, $C$ and $D$ in the order of decreasing reactivity.
Samples of four metals $A$, $B$, $C$ and $D$ were taken and added to the following solution one by one. The results obtained have been tabulated as follows.
| Metal | Iron $(II)$ sulphate | Cooper $(II)$ sulphate | zinc sulphate | Silver nitrate |
| $A.$ | No reaction | Displacement | ||
| $B.$ | Displacement | No reaction | ||
| $C.$ | No reaction | No reaction | No reaction | Displacement |
| $D.$ | No reaction | No reaction | No reaction | No reaction |
Use the Table above to answer the following questions about metals $A$, $B$, $C$ and $D$.
$(i)$ Which is the most reactive metal ?
$(ii)$ What would you observe if $B$ is added to a solution of Copper $(II)$ sulphate ?
$(iii)$ Arrange the metals $A$, $B$, $C$ and $D$ in the order of decreasing reactivity.