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(A)Milk is a naturally occuring stable e...

(A)Milk is a naturally occuring stable emulsion . (R ) Milk is an example of oil in water type emulsion

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

(A) is false but (R) is true

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The correct Answer is:
B
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Emulsions are normally prepared by shaking the two components together vigorously although some kind of emulsifying agent usually has to added to stabilize the product. This emulsifying agent may be a soap or other surfactant (surface active) species or a lyophilic sol. Emulsions are broadly classified into two types : (i) Oil in water emulsions (O/W): Oil acts as dispersed phase and water acts as dispersion medium (ii) Water in oil emulsions (W/O) : Water acts as dispersed phase and oil acts as dispersion medium. Dye test, dilution test may be employed for identification of emulsions. Read the two statements : A) Milk is an example of oil in water (O/W) type emulsion B) Cold cream is an example of water in oil (W/O) type emulsion

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AAKASH SERIES-SURFACE CHEMISTRY-LEVEL - I (EXERCISE - I)(COLLOIDS)
  1. The emulsifier for olive oil in water emulsion is

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  2. Soap emulsifies

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  3. During the cleaning action of soap - part of soap dissolves in the dir...

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  4. Water in benzene is emulsified by

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  5. The kind of colloid that does not exist

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  6. Dispersed phase and the dispersion media in blood respectively are

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  7. The hydrophobic end of lauryl sulphate is

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  8. Which of the following is not correct

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  9. Which of the following may form associate colloids?

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  10. Which of the following is a lyophobic solution?

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  11. Most common emulsifier for vegetable oil, water emulsion is ---

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  12. {:("List - I ","List - II "),("[Colloidal solution]"," [Example]"),("A...

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  13. {:("LIST - 1","LIST-2"),("A) Colloidal","1) Liquid or solid or gas"),(...

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  14. The simplest way to check whether a system is colloidal

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  15. Some statements are given below about lyophillic sol I) These are so...

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  16. The following are some statements about micelles I) These are formed...

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  17. Colloidal solution of gold prepared by different methods have differen...

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  18. (A)Milk is a naturally occuring stable emulsion . (R ) Milk is an exam...

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  19. (A) Substances whose solutions cannot pass through filter paper are ca...

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  20. Gold numbers of protective colloids A,B, C and D are 0.50, 0.01, 0.10,...

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