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Surface Chemistry
Short Answer Type
81.
What is colloidion?
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82.
Which of the following is adsorbed preferably: O
2
, NH
3,
CO?
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83.
Why is a substance more effective in colloidal state?
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84.
Why is catalyst, in general, taken in the form of finely divided powder?
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85.
Suggest a physical method for the preparation of phosphorus sol.
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86.
What name is given to sol in which benzene is dispersion medium?
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87.
What is occulusion?
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88.
Give an example of a shape-selective catalyst.
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89.
How can dialysis be made fast?
Answer:
Dialysis can be made faster in electric field.
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90.
Give an example of peptizing agent?
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