HARD
12th Tamil Nadu Board
IMPORTANT
Earn 100

What is the difference between a sol and a gel?

Important Questions on Surface Chemistry

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?
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 11
What are the factors which influence the adsorption of a gas on a solid?
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 12
What are enzymes? Write a brief note on the mechanism of enzyme catalysis.
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 13
What do you mean by activity and selectivity of catalyst?
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 14
Describe some feature of catalysis by Zeolites.
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 15
Give three uses of emulsions.
HARD
12th Tamil Nadu Board
IMPORTANT
Chemistry Standard 12 Vol II>Chapter 3 - Surface Chemistry>EVALUATION>Q 16
Why does bleeding stop by rubbing moist alum