How does a universal indicator differ from simple litmus paper when testing pH?
AIt changes color based on temperature rather than pH
BIt shows a gradual range of colors corresponding to different pH values across the scale
CIt only ever shows a single fixed color regardless of pH
DIt can only detect acids, never bases
Explanation
A universal indicator is a mixture of several different pH indicators combined to produce a gradual range of colors corresponding to specific values across the full pH scale, allowing for a more precise pH reading than simple litmus paper. Litmus paper, by contrast, only shows a basic red or blue color change, indicating broadly whether a substance is acidic or basic without specifying how strongly. Universal indicator is often used alongside a reference color chart to estimate a solution’s approximate pH value. Explore more Everyday Science MCQs on mcqstutor to keep practicing.
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