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Answer the following question: What typ...

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What type of colours will you use to celebrate eco friendly Rang Panchami? Why?

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  • SUBSTANCES IN COMMON USE

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NAVNEET PUBLICATION-SUBSTANCES IN COMMON USE-EXERCISE
  1. Answer the following question: Name the main source of a natural dye.

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  2. Answer the following question: Write the uses of natural dye.

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  3. Answer the following question: What type of colours will you use to c...

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  4. Answer the following question: What is meant by deodorant?

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  5. Answer the following question: Write the harmful effects of deodorant...

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  6. Answer the following question: What is meant by teflon? Give its chem...

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  7. Write down properties of teflon.

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  8. Writes uses of Teflon?

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  9. Why has the use of methods like Teflon coating become more common?

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  10. What is the property of Teflon because of which it is used in non-stic...

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  11. Answer the following question: What is meant by ceramic?

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  12. Give scientific reasons: Bleaching powder has the odour of chlorine.

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  13. Give scientific reasons: The hard water of a well becomes soft on ad...

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  14. Give scientific reasons: Soap forms a precipitate in hard water.

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  15. Give scientific explanation: The particles of powder are given an ele...

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  16. Give scientific reasons: The aluminium article is used as an anode i...

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  17. Give scientific reasons: A certain type of ceramic tiles are fixed o...

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  18. Write the uses of : Anodizing.

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  19. Write the uses of : Powder coating.

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  20. Write the uses of ceramic.

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