HARD
12th Tamil Nadu Board
IMPORTANT
Earn 100

Differentiate physisorption and chemisorption 

Important Questions on Surface Chemistry

HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 3
In case of chemisorption, why adsorption first increases and then decreases with temperature? 
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 4
Which will be adsorbed more readily on the surface of charcoal and why? NH3 or CO2? 
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 5
Heat of adsorption is greater for chemisorptions than physisorption. Why?
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 6
Peptizing agent is added to convert precipitate into colloidal solution. Explain with an example.
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 7
What happens when a colloidal sol of Fe(OH)3 & As2O3 are mixed?
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 8
What is the difference between a sol and a gel?
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 9
Why are lyophilic colloidal sols are more stable than lyophobic colloidal sol.
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 10
Addition of Alum purifies water. Why?