SURFACE CHEMISTRY PAPER CBSE XII
TEST CLASS - XII CHEMISTRY (Surface chemistry) MM-35 TIME-60 MIN Q1 what is observed when light is passed through a colloidal solution? [1] Q2.State Hardy- Schulze rule. ? [1] Q3. What is a protective colloid? [1] Q4. What is flocculation? [1] Q5. Alum is used for purification of water. Why? [1] Q6. Define the term peptization?