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Effect on Indicators by Acids and Bases

The pH of the...

Question

The pH of the solution changes from 13 to 11. The colour of litmus paper changes from :

A

blue to pink

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B

pink to blue

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C

red to blue

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D

No change

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Solution

The correct option is D No change
pH changes from 13 to 11. It means the basicity remains and there is no change in colour.

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