Question

Olfactory indicator help to identify whether the given solution is acidic or basic by changing:

• A. colour
• B. smell
• C. texture
• D. all of the above

Answer 1

The correct option is B smell

An olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution.

Olfactory indicators are based on the sensation of smell to identify the nature of the substance.

Some examples of olfactory indicators are onion, clove oil, vanilla extract, etc.

Thus, the correct option is B.