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प्रश्न
Which metals do not corrode easily?
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उत्तर
Metals which have low reactivity such as silver, platinum, gold does not corrode easily.
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संबंधित प्रश्न
Write a chemical equation to show the process of corrosion of iron.
Fill in the following blanks with suitable words:
............ and .............. are necessary for the rusting of iron.
What is meant by 'rusting of iron'? With the help of labelled diagrams, describe an activity to find out the conditions under which iron rusts.
Name the metal which is a constituent of plant pigment?
Give reason.
A wooden article should be polished.
_______ is an alloy made from iron, carbon and chromium.
Corrosion of silver causes a black layer of _______.
To prevent corrosion of iron and steel _______ method is used.
Pressure cooker : Anodizing : : Silver plated spoons : _______
Bronze : _______ : : Stainless steel : Fe + Cr + C
Match the columns.
| Group A | Group B |
| 1) Electroplating | a) Pressure cooker |
| 2) Anodising | b) Silver plated spoons |
| c) Coating of tin on copper | |
| d) Coating of Zinc on iron |
Write the name.
Method used to prevent corrosion of copper.
Write scientific reason.
Anodization method is useful for prevention of the corrosion of the aluminium.
Complete flow chart given below.
What is rust?
State two conditions necessary for rusting of iron.
Which among the following alloys contain mercury as one of its constituents?
Explain the following:
Bubbles are produced when acetic acid is added to a solution of sodium hydrogencarbonate.
Describe two changes that are harmful. Explain why you consider them harmful. How can you prevent them?
