Northern Virginia Criminal Justice Academy (NVCJA) Practice Exam

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Enhance your knowledge for the Northern Virginia Criminal Justice Academy Test. Use multiple-choice questions with hints and explanations to prepare effectively for your exam!

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What color does cocaine turn during a field test?

Yellow
Blue
Green
Pink

The correct answer is: Blue

During a field test for cocaine, the expected color change is blue. This result arises from a chemical reaction between cocaine and the testing reagents used in standard field tests. When cocaine is present, it reacts and produces a blue hue, which indicates its presence to law enforcement officers during preliminary testing. Understanding the significance of field tests is crucial for law enforcement, as these tests provide an initial indication of a substance's identity and help guide subsequent actions, such as arrest or further laboratory analysis. The specific reactions and colors produced in these tests assist officers in making informed decisions on-site.