Question

What is old factory? Give example of old factory. And about ATP and Xylena.​

Answer 1

An olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution. These type of indicators are used in laboratories to check whether a given solution is a basic or an acidic solution by a process known as olfactory titration. eg=Onion, clove oil and vanilla extract are some of the examples.