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Question

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The label on the bottle of chemical is spoiled. How will you find whether the chemical is acidic or not ?  

Solution

The chemical is acidic or not checked by two ways :
1. By use of litmus paper :

If the given solution is acidic, it turns blue litmus  to red litmus.
If the given solution is basic, it turns red litmus  to blue litmus.
If the given solution is neutral, there is no effect on litmus paper.

2. By use of indicators :

If the given solution is acidic, it turns methyl orange to red.
If the given solution is basic, it turns methyl orange to yellow
If the given solution is neutral, there is no effect on methyl orange indicator.

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APPEARS IN

 Balbharati Solution for Balbharati Class 8 Science - General Science (2018 to Current)
Chapter 12: Introduction to Acid and Base
Exercise | Q: 4.3 | Page no. 88
Solution Give Answers Concept: Concept of Acid.
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