HAZMAT Technician Practice Exam 2025 - Free HAZMAT Technician Practice Questions and Study Resource.

Question: 1 / 400

What color change does an acid produce on blue litmus paper?

Green

Yellow

Red

When an acid is introduced to blue litmus paper, it causes a color change that results in the paper turning red. This reaction occurs because litmus paper is a pH indicator, and acids, which are substances with a pH less than 7, specifically react with the dye used in the litmus paper. The blue dye changes to red in the presence of acidic conditions, effectively signaling the acidity of the solution.

This property of litmus paper is widely utilized in various chemical applications to quickly assess the pH of a solution without the need for complex equipment. Therefore, when dealing with an acidic substance, the expected and observed change on blue litmus paper is a shift to red, confirming the presence of an acid.

Get further explanation with Examzify DeepDiveBeta

No change

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy