Ch 7 Chemistry Class 9
Important easy to understand Notes of Ch 7 Chemistry Class 9 English Medium written by Professor Sulman Arif Suib. These notes are very helpful in the preparation of Chemistry for students of the 9th class Chemistry English Medium and these are according to the paper patterns of all Sindh Book Boards.
Summary and Contents:
Topics which are discussed in the notes are given below:
- Define electrochemical reactions.
- What is the Oxidation reaction. Give to a chemical equations for oxidation.
- What is the Reduction reaction. Give to a chemical equations for oxidation.
- Differentiate between oxidation and reduction reaction.
- What are oxidising and reducing agents. Give some examples of it.
- What is the electrochemical cells? name its types.
- Define electrolytes and non-electrolytes. Give their examples.
- What are strong electrolytes and weak electrolytes.
- Define electrolytic cells and electrolysis. Give an example of electrolysis in electrolytic cell.
- Give the applications of electrolytic cells.
- State Friday's law of electrolysis. Also explain it.
- State Faraday's second law of electrolysis.
- Write a short note on dry cell and Lead Storage battery.
- Define Alloy. Also Give examples.
- Giving application of some alloys.
- What is the Corrosion. Give methods for prevention from Corrosion.
- Write short note on rusting of iron.
- What is anelectroplating. Described in plating, zinc plating, silver plating, and chromium plating.
- Unsolved Questions and Numerical of the exercise Ch 7 Chemistry Class 9.