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प्रश्न
Name any three objects (or structures) which are gradually damaged by the corrosion of iron and steel.
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उत्तर
Following are the three objects that are damaged by corrosion:
(i) Iron railings
(ii) Ships
(iii) Bridges
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संबंधित प्रश्न
What is an alloy?
What type of chemical reaction is involved in the corrosion of iron?
The chemical reaction involved in the corrosion of iron metal is that of:
(a) oxidation as well as displacement
(b) reduction as well as combination
(c) oxidation as well as combination
(d) reduction as well as displacement
State two conditions for the rusting of iron.
Fill in the following blank with suitable word:
The process of depositing a thin layer of zinc on iron articles is called .............
Give the constituents and one use of brass.
Four metals P, Q, R and S are all obtained by the reduction of their oxides with carbon. Metal P is used to form a thin layer over the sheets of metal S to prevent its corrosion. Metal Q is used for electroplating tiffin boxes made of metal S whereas metal R is used in making car batteries. Metals Q and R form an alloy called solder. What are metals P, Q, R and S? How have you arrived at this conclusion?
Corrosion of silver causes a black layer of _______.
_______ forms a green colour in the water.
Rusting of iron : Fe2O3 : : corrosion of copper : ______
Write the name.
An alloy of copper and tin-
Explain concept with example/explain with the help of a balanced equation.
Corrosion
Observe the following figure and write the answer of the question.
- Which process is shown in the figure?
- Explain the chemical reaction shown in the figure.
- Write the reactions on anode and cathode.
The process of coating the surface of the metal with a thin layer of zinc is called ______
Give the equation for the formation of rust.
The diagram shows the reaction between metal and dil. acid.
What is the reason for different behaviour of Mg in test tube B?
State whether the following statement is true or false:
Ships suffer a lot of damage though they are painted.
Describe two changes that are harmful. Explain why you consider them harmful. How can you prevent them?
