1
Question
What is an olfactory indicator? Name two olfactory indicators. What is the effect of adding sodium hydroxide solution to these olfactory indicators?
Open in App
Solution
Those substances whose smell (or odour) changes in acidic or basic solutions are called olfactory indicators. Onion and vanilla extracts are olfactory indicators.
When a basic solution like sodium hydroxide is added to a cloth strip treated with onions (or onion extract), then the smell of onion vanishes.
And when sodium hydroxide is added to vanilla extract, it destroys the characteristic smell of vanilla.
When a basic solution like sodium hydroxide is added to a cloth strip treated with onions (or onion extract), then the smell of onion vanishes.
And when sodium hydroxide is added to vanilla extract, it destroys the characteristic smell of vanilla.
And when sodium hydroxide is added to vanilla extract, it destroys the characteristic smell of vanilla.
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
