Chemistry in Everyday Life Book Back Questions

6th Standard

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Science

Time : 00:45:00 Hrs
Total Marks : 30
    5 x 1 = 5
  1. Soaps were originally made from________.

    (a)

    proteins

    (b)

    animal fats and vegetable oils

    (c)

    chemicals extracted from the soil

    (d)

    foam booster

  2. The saponification of a fat or oil is done using _______________ solution for hot process.

    (a)

    Potassium hydroxide

    (b)

    Sodium hydroxide

    (c)

    Hydrochloric acid

    (d)

    Sodium chloride

  3. Gypsum is added to the cement for _______.

    (a)

    fast setting

    (b)

    delayed setting

    (c)

    hardening

    (d)

    making paste

  4. Phenol is _______.

    (a)

    carbolic acid

    (b)

    acetic acid

    (c)

    benzoic acid

    (d)

    hydrochloric acid

  5. Natural adhesives are made from ________.

    (a)

    Protein

    (b)

    fat

    (c)

    starch

    (d)

    vitamins

  6. 5 x 1 = 5
  7. _________ gas causes tears in our eyes while cutting onions.

    ()

    Propanethial s-oxide

  8. Water, coconut oil and __________ are necessary for soap preparation.

    ()

    animal fat

  9. ____________ is called as farmer’s best friend.

    ()

    Earthworm

  10. ___________ fertilizer is ecofriendly

    ()

    Organic

  11. _________ is an example for natural adhesive.

    ()

    Strach

  12. 3 x 2 = 6
  13. Give an example for inorganic fertilizer.

  14. Mention any three physical properties of phenol.

  15. Explain the uses of plaster of paris.

  16. 3 x 3 = 9
  17. Why earthworm is called as farmer’s friend?

  18. Explain the process of manufacturing cement.

  19. What are uses of Gypsum?

  20. 1 x 5 = 5
  21. How are detergents manufactured?

*****************************************

Reviews & Comments about 6th Science - Chemistry in Everyday Life Book Back Questions

Write your Comment