What is the smell of vanilla extract when treated with an acid and a base ?

What is the smell of onion when treated with an acid and a base?

What is the use of smell.

What is the pH of a salt which was produced by a strong acid and a strong base ?

Which of the following compounds gives blood red colouration when its Lassaigne's extract is treated with alkali and ferric chloride ?

Acetic acid gives acetic anhydride when treated with

What happens when BF_3 is treated with ammonia ?

What is the measure of strength of an acid and base?