(a) Give any two differences between lyophilic and lyophobic colloids.
(b) Write the two steps involved in the mechanism of enzyme catalysed reaction.
(c) What is the entropy change `(Delta s)` for adsorption ?

Explanation

(a)
(b) Step 1 : Binding of enzyme to substrate to form an activated complex
`E + S to ES^(**)`
Step 2 : Decomposition of the activated complex to form product
`Es^(**) to E + P`
(c) Decreases OR `Delta S = -ve OR DeltaS < O OR Delta S` is negative.