घातांक के नियम | Surds and Indices | Power and Exponent | Indices basics | #shorts

A universal indicator is used to determine the acidic or basic stength of a solution .

Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions , respectively are

The acid from of an acid base indicator is yellow in acid and red in basic from. What is the change in pH in order to change the indicator form 80% yellow to 80% red.

State whether the following statements are true or false : Indicator is a substance which shows different colours in acidic and basic solutions.

Mark 'T' if the statement is true and 'F' if it is false: Indicator is a substance which shows different colours in acidic and basic solutions. (T/F)