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Define coagulation value....

Define coagulation value.

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The correct Answer is:
The minimum concentration of an electrolyte in millimoles per litre required to cause coagulation of a sol
in two hours is called coagulation value.
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AAKASH INSTITUTE-SURFACE CHEMISTRY -TRY YOURSELF
  1. Write the name of four methods to coagulate lyphobic colloids

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  2. What is most accepted reason for the presence of charge on colloids?

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  3. Define coagulation value.

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  4. Why adsorption is exothermic ?

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  5. What is the effect on entropy change (Delta S) in adsorption ?

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  6. Which adsorption has low enthalpy of adsorption ?

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  7. Low temperature is favourable for which type of adsorption ?

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  8. Which type of gases are readily adsorbed by solids ?

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  9. Write any two characteristics of Chemisorption.

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  10. Why dows physisoption decrease with increase of temperature ?

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  11. What is the change in mass and composition of catalyst after the compl...

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  12. Write the name of scientist who suggested the term catalyst first?

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  13. Metals of how many groups of periodic table show macimum catalytic act...

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  14. Which catalyst is used to convert alcohol directly to petrol?

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  15. What are optimum temperature and pH for the enzymes to act best ?

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  16. Which enzyme converts milk into curd?

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  17. By which method preciptate is converted into colloids ?

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  18. Give two examples of multimolecular colloides .

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  19. On which principle oleansing action of soap is based ?

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  20. What is the dispersed phase and dispersion medium in gel?

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