Question Text
Question 1 :
The substances which give different colours with acid and base are called __________ .
Question 2 :
Phenolphthalein gives a pink colour in alkalinate medium due to the fact that:
Question 3 :
Indicator is a substance which shows different colors in acidic and basic solutions.
Question 4 :
Which of the following shows differential coloring in acidic and basic solutions?
Question 8 :
The indicator used in the titration of a strong acid and a strong base is/are :
Question 9 :
When phenolphthalein is added to $NaOH$ solution, the colour changes to:
