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…….. Is the gold number of hydrophil...

…….. Is the gold number of hydrophilic colloid, greater is its protective power.

A

higher

B

lower

C

constant

D

non of these.

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The correct Answer is:
B
it is the correct answer.
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the protective power of the lyophilic colloids es expressed in terms of gold number, a term introduced by Zsigmondy. Gold number is the number of milli - gram of the protective colloid which prevent the coagulation of 10 mLof red gold sol , when 1 mL of a 10 per cent solution of sodium chloride is added to it . thus smaller the gold number of lyophillic colloid, the greater is the protective power. gold number given an indication of

the protective power of the lyophilic colloids es expressed in terms of gold number, a term introduced by Zsigmondy. Gold number is the number of milli - gram of the protective colloid which prevent the coagulation of 10 mLof red gold sol , when 1 mL of a 10 per cent solution of sodium chloride is added to it . thus smaller the gold number of lyophillic colloid, the greater is the protective power. which of the following statement (S) is / are correct?

the protective power of the lyophilic colloids es expressed in terms of gold number, a term introduced by Zsigmondy. Gold number is the number of milli - gram of the protective colloid which prevent the coagulation of 10 mLof red gold sol , when 1 mL of a 10 per cent solution of sodium chloride is added to it . thus smaller the gold number of lyophillic colloid, the greater is the protective power. On addition of one mL of sloution of 10 % NaCl to 10 mL. of red gold sol in presence of 0l.025 g of starch the coagultion is just prevented . the gold number of starch is

Assertion: Gold number is the measure of protective powers of differents colloids. Reason: The smaller the gold number of lyophilic colloid, the smaller is its protective power.

Statement-1:Gold number is the measure of protective powers of different colloids. Statement-2: The smaller the gold number of lyophilic colloid, the smaller is its protective power.

DINESH PUBLICATION-SURFACE CHEMISTRY -JEE (MAIN) & OTHER ENGINEERING ENTRANCE EXAMINATIONS
  1. which one is an example of multimolecular coloid system?

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  2. The stabilization of a lyophobic colloid is due to :

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  3. …….. Is the gold number of hydrophilic colloid, greater is its pro...

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  4. For Freundlich isotherm, a groph of log x/m is plotted against log p.

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  5. Which of the following colloieds cannot be easily coagulated ?

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  6. Which of the following curves is in accordance with Freundlich adsorpt...

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  7. 3 g of activated charcoal was added to 50 mL of acetic acid solution (...

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  8. Dispersed phase and sispersion medium for fog are :

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  9. Which of the following statements is not correct ?

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  10. Aqueous solution of raw sugar (generally brown) when passed over beds ...

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  11. At a given temperature nd pressure, adsorption of which gas out of the...

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  12. Which of the following is the most effective in c ausing coagulation o...

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  13. For a linear plot of log (x/m) versus log p in a Freundlich adsorption...

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  14. Point out the false statement.

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  15. Which is not correct statement in respect to chemisorption?

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  16. The charge on As(2)S(3) sol is due to:

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  17. Which of the following is not favourable condition for physical adsorp...

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  18. The Tyandall effect is observed only when following conditions are sat...

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  19. Gold sol is not s

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  20. Which of the following statement is true regarding chemosorption of ga...

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