Q.

When china rose indicator is added in neutral solution, it shows

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a

No change 

b

Colourless to pink

c

Blue to red

d

Red to blue

answer is D.

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Detailed Solution

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Indicators are those substances which show a colour change when they are in the presence of acids and bases.

 Indicators are of two types: natural indicators and synthetic indicators. China rose is a natural acid-base indicator. 

When a solution of China rose is added to a neutral solution, it does not give any color change.
 

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