Related InterviewSolutions

• How does it become possible to cause artificial rain by spraying silver iodide on the clouds?
• Artificial rain is caused by spraying salt over clouds.
• Define the following terms: (i) Desorption (ii) Critical micelle concentration (iii) Shape selective catalysis
• What are Associated Colloids ? Give an example.
• What do you understand by the terms : (i) CMC, (ii) Kraft's temperature, (iii) McBain micelle.
• Explain the following :(i) Same substance can act both as colloids and crystalloids. (ii) Artificial rain is caused by spraying salt over clouds.
• Define the following terms with an example in each: (i) Lyophobic colloids (ii) Homogeneous catalysis (iii) O/W emulsion
• Some substances can act both as colloids and crystalloids. Explain.
• Explain what is observed when : (i) A beam of light is passed through a colloidal solution. (ii) NaCl solution is added to hydrated ferric oxide sol. (iii) Electric current is passed through a colloidal solution.
• How are the following colloidal solutions prepared ? (i) Sulphur in water, (ii) Gold in water.