Question

What are indicators ? Name any three indicators and the state the colour change which takes place in (1) acids (2) bases
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Answer 1

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Answer 2

Answer:

Indicators are chemical substances which help to differentiate between acids, neutral solutions and bases or alkali

There are two types of indicators- natural and synthetic.

Example for indicators- turmeric- yellow in acid solution and red in basic solution.

China rose gives magenta in acid solution and green in basic solution. Blue litmus paper turns into red when dipped in acidic solution.

Red litmus paper turns into blue when dipped in basic solution.