NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

In the English method of preparing emulsions, the initial step involves?

1. Mixing oil with water

2. Triturating gum with water

3. Adding oil slowly while mixing

4. Triturating until a creamy white mixture is formed

The correct answer is: Triturating gum with water

In the English method of preparing emulsions, the initial step involves triturating gum with water. This is because in the English method, the gum is first triturated (mixed) with water to form a mucilage before adding the oil phase. This step helps in hydrating the gum and forming a stable base for the emulsion formation. The other options are incorrect because they do not capture the specific initial step in the English method of emulsion preparation. Mixing oil with water would not be the initial step, adding oil slowly while mixing comes later in the process, and triturating until a creamy white mixture is formed is not necessarily the initial step in the English method.