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Chemistry

Grade-10

Easy

Question

Universal indicator solutions are usually green to begin with. What does this mean?

It is acidic
It is alkaline
It is neutral
It is weak

hint Hint:

Neutral is green.

The correct answer is: It is neutral

A universal indicator is a pH indicator made of a solution of several compounds that exhibits several smooth colour changes over a wide range pH values to indicate the acidity or alkalinity of solutions.
pH range description colour:

< 3 Strong acid Red

3–6. Weak acid Orange

7 Neutral Green

8–11 Weak base Blue

> 11 Strong base Violet

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