Which indicator changes through a full colour range across the pH scale?
A
Universal indicator
B
Litmus
C
Phenolphthalein
D
Methyl orange
Correct Answer: Option A — Universal indicator
Explanation:
Universal indicator is a mixture of several indicators that changes colour across the full pH range from red in strong acids through green a...
Universal indicator is a mixture of several indicators that changes colour across the full pH range from red in strong acids through green at neutral to purple in strong alkalis.