. What is an olfactory indicator? Name two such indicators.
Answer:
Those substances whose smell (or odour) changes in acidic or basic solutions are called olfactory indicators. Onion and vanilla extract are olfactory indicators.
. What is an olfactory indicator? Name two such indicators.
Answer:
Those substances whose smell (or odour) changes in acidic or basic solutions are called olfactory indicators. Onion and vanilla extract are olfactory indicators.