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प्रश्न
Which of the following method is used to prevent the accumulation of greenish layer on brass due to corrosion?
पर्याय
electroplating
anodization
tinning
alloying
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उत्तर
tinning
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संबंधित प्रश्न
What is an alloy?
Write two methods of preventing the rusting of iron.
What is anodising? Give its applications.
The corrosion of iron is called ______.
______ and ______ are necessary for the rusting of iron.
Explain why, though aluminium is more reactive than iron, yet there is less corrosion of aluminium when both are exposed to air.
What is corrosion?
With the help of labelled diagrams, describe an activity to find out the conditions under which iron rusts.
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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?
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Name the metal which is a constituent of plant pigment?
Explain how the activity series accounts for each of the following:
tendency to corrosion
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State whether the statement given below is true or false. If false write the correct statement.
Graphite is a lustrous non-metal which conducts electricity.
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Rusting of iron : Fe2O3 : : corrosion of copper : ______
Find the odd one out and give its explanation.
Write scientific reason.
On exposure to air, silver articles turn blackish after some time.
Write scientific reason.
Coins are made from metals and alloys.
Complete flow chart given below.

Write a molecular formula for rust.
Observe the following diagram and give answers.

- Name this method of prevention of corrosion.
- For prevention of which metal this method is used?
- What is used as anode in this method?
Observe the following diagram and write answers.

- Name the method.
- Explain the method.
- Give two examples of this method.
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.
State two conditions necessary for rusting of iron.
Galvanisation is a method of protecting iron from rusting by coating it with a thin layer of ____________.
Amalgam is an alloy of ____________.
Which among the following alloys contain mercury as one of its constituents?
Identify the correct statement from the following:
Generally, when metals are treated with mineral acids, hydrogen gas is liberated but when metals (except Mn and Mg), treated with HNO3, hydrogen is not liberated, why?
Give an example of a chemical reaction for the following situation:
Sound is produced
Gold plated ornaments is the example of ______.
In ______ process a layer of molten tin is deposited on metals.
