A student is performing a Benedict’s test on an unknown substance. The student adds the reagent (the chemical required to make a color change), and nothing happens. Which conclusion can the student make?(1 point)ResponsesThe substance is not glucose based.The substance is not glucose based.The substance is glucose based.The substance is glucose based.The test was inconclusive because the student forgot to add heat.The test was inconclusive because the student forgot to add heat.The test was inconclusive because the student needed to also test with iodine or vinegar.

Question

GPT-4o mini · Answer

The correct conclusion the student can make is:

The substance is not glucose based.

In a Benedict's test, a positive result (color change) indicates the presence of reducing sugars such as glucose. If no color change occurs, it suggests that the substance does not contain glucose or other reducing sugars. However, it's also important to note that the test could be inconclusive if proper procedures were not followed (e.g., forgetting to heat the mixture), but based on the options provided, the safest conclusion is that the substance is not glucose-based.