Question

Write the name of one common indicator used in chemistry lab. *

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Answer 1

Answer:

litmus paper

phenolphthalein

Answer 2

Answer:

Methyl yellow is a common indicator used in Chemistry lab.

Or Litmus Paper can also be used.

Explanation:

Methyl yellow, which imparts a yellow colour to an alkaline solution. If acid is slowly added, the solution remains yellow until all the alkali has been neutralized, whereupon the colour suddenly changes to red.

There are mainly two types of Litmus Paper -:

Litmus paper that has changed from red to blue can be reused as blue litmus paper. Paper that has changed from blue to red can be reused as red litmus paper.

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