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What problem do you have on painting the...

What problem do you have on painting the house and furniture?

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NAVNEET PUBLICATION-SUBSTANCES IN COMMON USE-EXERCISE
  1. Answer the following question: Write the harmful effects of radioacti...

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  2. What problems do you get after playing colours on Rang Panchami?

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  3. What problem do you have on painting the house and furniture?

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  4. Answer the following question: Write the harmful effects of artifical...

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  5. Answer the following question: What is meant by dye?

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  6. Answer the following question: State the uses of Artificial dye.

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  7. Answer the following question: Write the harmful effects of artificia...

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  8. Answer the following question: Name the main source of a natural dye.

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

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

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

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

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

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  14. Write down properties of teflon.

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  15. Writes uses of Teflon?

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

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

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

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

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

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