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Explain concept with example/explain with the help of a balanced equation.
Corrosion
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Draw a neat labelled diagram.
Electroplating
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Draw a neat labelled diagram.
Anodizing
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Complete flow chart given below.
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Identify and explain concepts given in this diagram.
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Write a molecular formula for rust.
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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?
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Observe the following diagram and write answers.
- Name the method.
- Explain the method.
- Give two examples of this method.
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Observe the following figure and write the answer of the question.
- Which process is shown in the figure?
- Explain the chemical reaction shown in the figure.
- Write the reactions on anode and cathode.
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Give preventive methods by giving examples of corrosion?
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Gold plated ornaments is the example of ______.
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Give scientific reasons.
Silver amalgam is used for filling dental cavities.
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Explain the chemical reactions in rusting of iron.
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Complete the correlation:
Farsightedness : Convex lens : : Presbyopia : ______
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| A process of forming a thick oxide of aluminium when aluminium is exposed to air. This coat makes it resistant to corrosion. Resistance can be improved by making a layer of oxide thinker. In this technique, the aluminium article is the anode, and the electrolyte is sulphuric acid. The anode reaction results in the formation of a black-coloured film of aluminium oxide on the anode. By putting appropriate dyes in the electrolytic solution, both coloured surface with the decorative finish is achieved. Kitchen articles like anodised such as pressure cookers, pans and frames of sliding windows are applications of this technique. |
- Name the anode and electrolyte used in this technique.
- How can we make aluminium articles made resistant to corrosion?
- Name the technique used to coat the aluminium articles.
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In simple microscope ______ lens is used.
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What are the factors affecting the rate of chemical reaction?
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Explain any one factor affecting the rate of chemical reaction.
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