CBSE Class 12 Chemistry 2020 Outside Delhi Set 1 Solved Paper

Show Para  Hide Para 
SECTION -A

Read the given passage and answer the questions 1 to 5 that follow:
Colloidal particles always carry an electric charge which may be either positive or negative. For example, when AgNO3 solution is added to KI solution, a negatively charged colloidal sol is obtained. The presence of equal and similar charges on colloidal particles provide stability to the colloidal sol and if, somehow, charge is removed, coagulation of sol occurs. Lyophobic sols are readily coagulated as compared to lyophilic sols.
© examsnet.com
Question : 5
Total: 37
Out of KI or K2SO4, which electrolyte is better in the coagulation of positive sol ?
Solution:  
© examsnet.com
Go to Question: