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Explain 4R Principle for creating eco-fr...

Explain `4R` Principle for creating eco-friendly environment.

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  • METALS AND NON-METALS

    VGS PUBLICATION-BRILLIANT|Exercise EXERCISE|222 Videos

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VGS PUBLICATION-BRILLIANT-SYNTHETIC FIBERES AND PLASTICS-EXERCISE
  1. How do you prepare polyester?

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  2. What material is used to make handles of utensils ?

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  3. Explain 4R Principle for creating eco-friendly environment.

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  4. Is rayon natural fibre or artificial ?

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  5. Write two slogans to popularize the awareness on "Organ Donation".

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  6. What is the most common material used in making the household articles...

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  7. Conduct a flame test to identify Thermoplastics and Thermosetting plas...

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  8. Why is polyester quite suitable for making dress materials ?

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  9. Name any two types of polyesters and their uses.

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  10. How do we obtain synthetic fibres?

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  11. Give resons why plastic containers are used as storage devices?

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  12. Explain why the following are made of thermosetting plastics : saucepa...

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  13. Suggest some approaches towards the conservation of forests.

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  14. Give examples to show that plastics are non-corrosive in nature.

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  15. (A) Teflon is used in nonstick cookwere (R) Teflon is resistant to a...

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  16. Write the uses of Bakelite

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  17. Write the uses of Melamine.

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  18. What are biodegradable and non-bio degrable detergents?Give one exampl...

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  19. Which are made up of acrylic.

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  20. Nylon is a synthetic fibre. Write the advantages and disadvantages of ...

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