Lyophobic colloids are liquid hating colloids (Lyo means solvent and phobic means hating). When these colloids are mixed with the suitable liquid, very weak force of attraction exists between colloidal particles and liquid and system does not pass into colloidal state readily . Hence correct answer is option 'A'.

Lyophobic colloids:
Lyophobic colloids, also known as solvent-hating colloids, are colloids in which the dispersed phase has no affinity or attraction towards the dispersion medium (solvent). These colloids tend to separate and form a distinct phase in the presence of the dispersion medium.

Examples of lyophobic colloids:
Lyophobic colloids can be categorized into two types based on the nature of the dispersed phase:
1. Hydrophobic colloids: These colloids have a water-repelling dispersed phase. They do not readily mix with water and tend to form separate phases.

Example: Oil in water is a hydrophobic colloid. When oil is added to water, it forms separate droplets that do not dissolve or mix with water.

2. Organophobic colloids: These colloids have a solvent-repelling dispersed phase other than water. The dispersed phase has no affinity for the solvent and forms separate phases.

Example: Gold sol is an example of an organophobic colloid. Gold particles do not dissolve in any solvent and form a colloidal dispersion.

Why option 'A' is the correct answer:
Option 'A' in the question states 'lyophobic' colloids, which includes both hydrophobic and organophobic colloids. Since hydrophobic colloids are a type of lyophobic colloids, option 'A' is the correct answer.

Summary:
Lyophobic colloids are solvent-hating colloids where the dispersed phase has no affinity for the dispersion medium. This category includes both hydrophobic and organophobic colloids. Therefore, option 'A' is the correct answer.