CBSE Class 7 Science Physical and Chemical Changes
- Why does the Qutub minar not rusted stil
- what is the chemical equation of quick lime?
- Why do ship get damaged in spite of being painted?
- Write a word equation to represent the process of rusting of iron.Also write the chemical symbols and formulae of all the substances involved
- What is Redox reaction ?
- What is reduction ?
- What is oxydation ?
- (i) What kind of a change is rusting? (ii) Can damp air cause rusting?
- Name the process of depositing a layer of zinc on iron. Give two examples of objects on which zinc coating is done.
- Explain how galvanization of an iron object prevents it from rusting.
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