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State what is observed when : an emul...

State what is observed when :
an emulsion is subjected to high speed centrifugation.

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Emulsion gets demulsified. We get separate layers of the emulsion.
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Explain what is observed (a) When an electrolyte NaCl is added to ferric hydroxide sol. (b) When an emulsion is subjected to centrifugation. (c) When direct currect is passed through a colloidal sol. (d) When a beam of light is passes through a colloidal solution.

Explain what is observed when (i) an electrolyte is added to ferric hydroxide sol. (ii) an emulsion is subjected to centrifugation. (iii) direct currect is passes through a colloidal sol.

U-LIKE SERIES-SURFACE CHEMISTRY-LONG ANSWER QUESTIONS-I
  1. Explain the following observations : Ferric hydroxide sol gets coag...

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  2. Cottrell's smoke precipitator is fitted at the mouth of the chimneys u...

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  3. Explain the following observations : Physical adsorption is multila...

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  4. How does a solid catalyst enhance the rate of combination of gaseous m...

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  5. Explain what happens, when KCI, an electrolyte, is added to hydrated f...

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  6. Explain what happens, when an electric current is passed through a col...

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  7. Explain what happens, when a beam of light is passed through a colloid...

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  8. What is enzyme catalysis ?

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  9. Give three examples of enzyme-catalysed reactions.

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  10. Give the sources of the enzymes, pepsin, urease and maltase.

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  11. State what is observed when : the electrodes connected to a battery...

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  12. State what is observed when : an electrolyte solution is added to a...

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  13. State what is observed when : an emulsion is subjected to high spee...

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  14. Derive the mathematical expression or show the relationship between th...

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  15. In which of the following does adsorption take place and why? (i) Si...

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  16. How does BF3 act as a catalyst in industrial process ?

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  17. Give an example of shape-selective catalysis.

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  18. Why does leather get hardened after tanning ?

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  19. On the basis of Hardy-Schulze rule explain why the coagulating power o...

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  20. Do the vital functions of the body such as digestion get affected duri...

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