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Which of the following forms cationic mi...

Which of the following forms cationic micelles above certain concentration?

A

Urea

B

cetyltrimethylammonium bromide

C

sodium dodecyl sulphate

D

sodium acetate

Text Solution

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The correct Answer is:
D
Sodium acetate forms cationic micelles in the molecule of soap and detergen the negative ions aggregate to from a micelle of colloidal size . The negative ion has a long hydrocarbon chain and a polar group `(-COO)` at one end.
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There are certain substances which behave as normal, strong electrolyte at low concentration but at higher concentration they behave as colloidal solutions due to the formation of aggeregated particles. Such colloidals called associated colloids and the aggeregated particles are called micelles. The formation of micelles take place above certain concentration called critical micelization concentration called critical micellization concentration (CMC) and a characteristic temperature. Micelles are formed only

There are certain substances which behave as normal, strong electrolyte at low concentration but at higher concentration they behave as colloidal solutions due to the formation of aggeregated particles. Such colloidals called associated colloids and the aggeregated particles are called micelles. The formation of micelles take place above certain concentration called critical micelization concentration called critical micellization concentration (CMC) and a characteristic temperature. What type of molecules form micelles?

A2Z-SURFACE CHEMISTRY-Section D - Chapter End Test
  1. Which of the following is not represented by sols?

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  2. Example of an intrinsic colloid is

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  3. colloidal solution of arsenious sulphide is coagulated by

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  4. Gold number gives

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  5. Point out the false statement

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  6. which of the following does not contain a hydrophobic structures.

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  7. The function of gum arabic in the preparation of Indian ink is

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  8. Which of the following gases is adsorbed most by activated charcoal?

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  9. Spherical gold paricles of radius 10nm, then the number of gold partic...

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  10. Which of the following forms cationic micelles above certain concentra...

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  11. In Frenudlich adsorption isotherm si proportional to pressure P as

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  12. Noble gases are adsorbed by

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  13. Adam's catalyst is

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  14. Which of the following types of metal form the most efficient catalyst...

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  15. As(2)S(3) has a negative charge. Capacity to precipate it is highest i...

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  16. Which of the following ielectrolytes is least effective in causing flo...

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  17. Ferric hydroxide sol is positively charged colloid. The coagulating po...

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  18. Assertion: According to Freundlich: x/m k.P^(1//n) Reason: The isot...

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  19. Assertion: For the coagulation of sols carrying positive charge, PO(4)...

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  20. Assertion: Physical absorption of molecular takes place on surface onl...

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