Which of the following salt solutions would coagulate the colloid solution formed when $$\mathrm{FeCl_3}$$ is added to $$\mathrm{NaOH}$$ solution, at the fastest rate?

The variation of the rate of an enzyme catalyzed reaction with substrate concentration is correctly represented by graph :

Statement I : For colloidal particles, the values of colligative properties are of small order as compared to values shown by true solutions at same concentration.

Statement II : For colloidal particles, the potential difference between the fixed layer and the diffused layer of same charges is called the electrokinetic potential or zeta potential.

In the light of the above statements, choose the correct answer from the options given below

Given below are the critical temperatures of some of the gases:

The gas showing least adsorption on a definite amount of charcoal is