BSC Surface Chemistry and Colloids Guess Paper 2021
Surface Chemistry and Colloids Guess Paper
Important Questions for Surface Chemistry and Colloids
Important Questions of Surface Chemistry and Colloids
- Explain the difference between absorption and adsorption. Discuss the types of adsorption isotherms.
- Write notes on the following:
(a) Freundlich adsorption isotherms.
(b) Longmuir adsorption isotherms.
- What do you understand by the colloidal state of matter? Bring out the difference between a colloidal solution and a true solution.
- Describe the general methods for the preparation of colloids. Give one example for each method.
- Explain the use of (a) dialysis (b) electro-dialysis (c) ultrafiltration.
- Distinguish between lyophobic and lyophilic colloids. Describe Bredig’s arc method for the preparation of lyophobic colloids.
- Give an account of the applications of colloids.
- Write notes on the following:
(a) Artificial rain.
(b) Cottrell smoke precipitator.
(c) Tyndall effect.
- How would you determine;
(a) Colloidal solution is brought under influence of an electric field.
(b) A beam of light is passed through a colloidal solution.
(c) Colloidal solution has very low osmotic pressure than the true solution, why?
