What is the colour of turmeric when acid is applied to it?
What is the colour of the turmeric in acid and base ?
What is the change in colour observed when turmeric is added to a base?
(a) What is an indicator ? Name the three common indicators.
(b) Name an acid-base indicator extracted from lichen.
(c) What colour does the turmeric paper turn to when put in an alkaline solution ?