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प्रश्न
Give reason.
An iron article should be given a coat of paint
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उत्तर
Iron articles often undergo rusting, resulting in the formation of a reddish-brown layer on their surface. Rusting is caused by the exposure of iron to the air and water in the surroundings. An iron article that is coated with paint prevents the interaction of iron with the surrounding air and water and thus protects it from rusting.
संबंधित प्रश्न
Give two examples of alloys with their chemical composition.
What is anodising? Give its applications.
Fill in the following blanks with suitable words:
Tiffin boxes are electroplated with .............. but car bumpers are electroplated with ............... to protect them from rusting.
Brass is an alloy of:
(a) Cu and Sn
(b) Cu and Pb
(c) Pb and Sn
(d) Zn and Cu
Choose the correct alternative and rewrite the following:
Iron is _____________________.
To prevent corrosion of iron and steel _______ method is used.
The process of coating the surface of the metal with a thin layer of zinc is called ______
Give an example of a chemical reaction for the following situation:
Sound is produced
Give scientific reasons.
Silver amalgam is used for filling dental cavities.
In ______ process a layer of molten tin is deposited on metals.
