The role of adding crystal violet (0.5 g),Brilliant green(0.5g).alcohol(90%) in 100millilitre of water.
What is the use of crystal violet and brilliant green in preparation of brilliant green paint.
State the importance of adding water to the solution.

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One thing I don't understand in that problem... is paint manufactured pharmaceutical science? :confused:

Also, I have no idea of what you are talking about. Is any more information given? That violet crystal could be many chemicals, and so does that brilliant green (brilliant green what?)