Which of the following colours is not seen in a rainbow?

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Which of the following colours is not seen in a rainbow? Answer: Brown

A rainbow is formed due to the dispersion of light and shows seven colours — red, orange, yellow, green, blue, indigo, and violet (ROYGBIV). Brown is not part of this visible spectrum in a natural rainbow.

Question context

This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.