Question

Protection is the property of lyophilic colloid.

• A. True
• B. False

Answer 1

The correct option is A True

When certain hydrophilic colloids such as gum, gelatin, agar-agar etc. are added to a hydrophobic colloid, the stability of the latter is markedly increased. Now the addition of the small amounts of electrolytes does not cause the precipitation of the hydrophobic colloid. This action of the hydrophilic colloids to prevent precipitation of the hydrophobic colloid by the electrolytes is called protection and the hydrophilic colloid is called protective colloid.