An emulsifiable concentrate (EC) is a _____ formulation of a pesticide which can be mixed with another _____ to form an emulsion.

• A. Dry, dry formulation
• B. Liquid, dry formulation
• C. Liquid, liquid
• D. Dry, liquid

Answer: (C)

An emulsifiable concentrate (EC) is a formulation where the pesticide is contained in a liquid form but is designed to be mixed with another liquid, often water, to create an emulsion. This is significant because emulsions help to balance the solubility of the pesticide and the solvent, providing more effective delivery and application.

When an emulsifiable concentrate is mixed with a suitable liquid, the emulsifying agents help prevent the components from separating, allowing for a stable mix. This stability is crucial for ensuring even application and effectiveness of the pesticide in pest management. The liquid to liquid combination is essential for achieving the desired consistency and efficacy of the formulation.

In contrast, the other options refer to dry formulations, which do not apply to emulsifiable concentrates since these products are specifically designed for use in liquid applications, further reinforcing the appropriateness of the correct answer.