Washington Pesticide Laws and Safety Practice Test

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Prepare for the Washington Pesticide Laws and Safety Test. Utilize flashcards and multiple choice questions with hints and explanations. Get ready to ace the exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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Why is agitation typically required for an emulsion?

To change the color of the mix.
To reduce the effectiveness of the AI.
To keep the AI/oil mixture suspended in water.
To increase the viscosity of the pesticide.

The correct answer is: To keep the AI/oil mixture suspended in water.

When creating an emulsion, two immiscible substances, such as oil and water, are mixed together to form a stable mixture. However, over time, these two substances tend to separate and form layers. Agitation, or the act of continuously stirring or shaking the mixture, is required to keep the oil and water evenly distributed and suspended throughout the emulsion. This is important for the effectiveness of the emulsion, as it ensures that the active ingredient (AI) is evenly dispersed and can be evenly applied to the target area. Option A is incorrect because agitation does not change the color of the mix. Option B is incorrect because agitation does not reduce the effectiveness of the AI, rather it helps to evenly distribute it. Option D is incorrect because agitation does not increase the viscosity of the pesticide, it simply helps to keep the substances suspended.