Question

All of the following dyes are blue except

Select one:
a. methylene blue.
b. indigo carmine.
c. Lymphazurin.
d. Lugol solution.

Answer 1

Lugol's solution is the dye that is not blue among the options given; it is typically a brownish-yellow color.

Step-by-step explanation:

The student's question is asking which of the listed dyes is not blue in color. The dyes mentioned are methylene blue, indigo carmine, Lymphazurin, and Lugol's solution. Out of these, the dye that is not blue is Lugol's solution. Lugol's solution, also known as Lugol's iodine, is typically a brownish-yellow color, not blue. The other dyes listed are indeed blue, as methylene blue and indigo carmine are well-known blue dyes, and Lymphazurin, also known as isosulfan blue, is used in medical procedures for mapping lymphatic vessels and is also blue.