When you add universal indicator to sulfuric acid, the solution will turn bright red. This is because sulfuric acid is a strong acid, meaning it readily releases hydrogen ions (H+) in solution.

Here's why:

* Universal indicator: This is a mixture of several dyes that change color depending on the pH of the solution.

* pH scale: The pH scale measures the acidity or alkalinity of a solution. A pH of 7 is neutral, less than 7 is acidic, and greater than 7 is alkaline.

* Sulfuric acid (H₂SO₄): This is a strong acid that dissociates completely in solution, releasing two hydrogen ions (H+) per molecule.

The high concentration of hydrogen ions in sulfuric acid solution lowers the pH significantly, causing the universal indicator to turn bright red, indicating a highly acidic solution.