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प्रश्न
In stainless steel alloy, iron metal is mixed with ______.
विकल्प
Cu and Cr
Cr and Ni
Cr and Sn
Cu and Ni
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उत्तर
In stainless steel alloy, iron metal is mixed with Cr and Ni.
Explanation:
Stainless steel is an alloy created by mixing iron with chromium (Cr) and nickel (Ni) to drastically alter its properties. Chromium forms a microscopic protective oxide layer on the surface, making the alloy highly resistant to corrosion and rust. Nickel is added to enhance this corrosion resistance while simultaneously increasing the alloy's overall strength, durability, and formability.
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संबंधित प्रश्न
Why do we apply paint on iron articles?
Choose the correct answer from the options given below:
Heating an ore in a limited supply of air or in the absence of air at a temperature just below its melting point is known as
A. Smelting
B. Ore-dressing
C. Calcination
D. Bessemerisation
Explain the term “corrosion” with an example. Write a chemical equation to show the process of corrosion of iron.
What is meant by galvanisation? Why is it done?
The corrosion of copper produces a ______ coating of basic copper carbonate on its surface.
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With the help of labelled diagrams, describe an activity to find out the conditions under which iron rusts.
If copper is kept exposed to damp air for a considerable time, it gets a green coating on its surface. This is due to the formation of ______.
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Bronze is an alloy of ______.
Explain with reason:
Roasting is carried out on sulphide ores and not on carbonate ores.
Find the odd man out:
Give reason.
A wooden article should be polished.
Give a reason why rust turns moist red litmus blue.
_______ is an alloy made from iron, carbon and chromium.
To prevent corrosion of iron and steel _______ method is used.
Stainless steel is an alloy of _______.
Find the odd one out and give its explanation.
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?
State two conditions necessary for rusting of iron.
