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प्रश्न
Give reason.
A wooden article should be polished.
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उत्तर
A wooden article should be polished because it protects the wooden article from sunlight and all other external conditions and also reduces the probability of wooden mites damaging the furniture.
संबंधित प्रश्न
Why do we apply paint on iron articles?
State two conditions for the rusting of iron.
Tiffin boxes are electroplated with ______ but car bumpers are electroplated with ______ to protect them from rusting.
______ and ______ are necessary for the rusting of iron.
What is corrosion?
Name two metals which resist corrosion due to the formation of a thin, hard and impervious layer of oxide on their surface.
Explain why, when a copper object remains in damp air for a considerable time, a green coating is formed on its surface. What is this process known as?
Stainless steel is an alloy of _______.
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.
Give preventive methods by giving examples of corrosion?
