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प्रश्न
Fill in the following blank with suitable word:
The corrosion of iron is called ................
उत्तर
The corrosion of iron is called rusting.
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संबंधित प्रश्न
What is an alloy?
Explain how painting of an iron gate prevents it from rusting.
Fill in the following blank with suitable word:
The corrosion of copper produces a .............. coating of basic copper carbonate on its 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?
State under what conditions corrosion is faster ?
Compare roasting and calcination.
Answer the following question.
a) What is meant by corrosion?
b) Write names of any two methods of prevention of corrosion.
c) In which method, metal like copper, aluminium are coated with a thin layer of their oxides by means of electrolysis.
d) Explain this method with diagram.
What are the adverse effects of corrosion?
When one of the metals in an alloy is mercury the alloy is called _______.
Pressure cooker : Anodizing : : Silver plated spoons : _______
Bronze : _______ : : Stainless steel : Fe + Cr + C
Find the odd one out and give its explanation.
Write the name.
Method used to prevent corrosion of copper.
Write scientific reason.
Coins are made from metals and alloys.
Amalgam is an alloy of ____________.
Marble’s popularity began in ancient Rome and Greece, where white and off-white marble were used to construct a variety of structures, from hand-held sculptures to massive pillars and buildings.
The substance not likely to contain CaCO3 is:
State whether the following statements are true or false:
Ships suffer a lot of damage though they are painted.
Gold plated ornaments is the example of ______.
In ______ process a layer of molten tin is deposited on metals.
