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Chemistry In Everyday Life - Two Marks Study Materials

12th Standard EM

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Chemistry

Time : 00:45:00 Hrs
Total Marks : 30
    15 x 2 = 30
  1. Which chemical is responsible for the antiseptic properties of dettol.

  2. What are antibiotics?

  3. Name one substance which can act as both analgesic and antiphyretic

  4. Write a note on synthetic detergents

  5. How do antiseptics differ from disinfectants?

  6. What are food preservatives?

  7. What are food additives?

  8. What are sugar substituents? Give two examples.

  9. Detergents are superior to soaps - Justify.

  10. Define polymerisation.

  11. Write the preparation of Teflon and Give its use.

  12. What is Condensation polymerisation?

  13. A water sample contains (CaHCO3)2 What will you choose soap or detergents for cleaning clothes.

  14. Explain why chloroform is not used as an anaesthetic.

  15. Name the antioxidant commonly used to increase the storage life of fats and oils.

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