Q. 35. How can a lyophillic sol be coagulated ? Q. 36. Give one example each of lyophobic sol and lyophilic sol. Q. 37. Based on the type of dispersed phase, what type of colloid is micelle ? Q. 38. Name the temperature above which the formation of micelle takes place. Q. 39. Describe some features of zeolites. Q. 40. (i) How does BF3 acts as a catalyst in industrial process ? (ii) Give an example of shape-selective catalyst.
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