Consider the following exhaustive list of highly common natural and commercial colloidal systems: (1) Milk, (2) Butter, (3) Cold cream, (4) Vanishing cream, (5) Cod liver oil, (6) Stiff greases. Exact

Question

Consider the following exhaustive list of highly common natural and commercial colloidal systems: (1) Milk, (2) Butter, (3) Cold cream, (4) Vanishing cream, (5) Cod liver oil, (6) Stiff greases. Exactly how many of these specific systems are strictly classified scientifically as Water-in-Oil (W/O) type emulsions?

Prashant Kotian · Accepted Answer

Correct answer: 4. Emulsions are classified by dispersed phase and continuous medium. Milk (O/W), Butter (W/O), Cold cream (W/O), Vanishing cream (O/W), Cod liver oil (W/O), and Stiff greases (W/O). The strictly W/O emulsions are Butter, Cold cream, Cod liver oil, and Stiff greases. The total count is exactly 4.

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