Which of the following can be used in the laboratory to test whether a solution is a base or an acid?

Olfactory indicator

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Acid indicator

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Basic indicator

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Regular indicator

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Solution

The correct option is B Olfactory indicator
An Olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution.

Olfactory indicators can be used in the laboratory to test whether a solution is a base or an acid, a process called olfactory titration.

For eg, onion loses its characteristic smell in basic solution and retains its smell in acidic solution.

Hence, option A is correct.

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Similar questions

Q. Olfactory indicators can be used in the laboratory to test whether a solution is basic or acidic. This process is called:

Which of the following can be used as an acid-base indicator in the laboratory?

(a) What is an acid-base indicator? Name the three common indicators used in chemistry laboratory.

(b) Name an acid-base indicator extracted from lichen.

What can a universal indicator indicate?
(i) Whether a solution is acidic.
(ii) Whether a solution is basic.
(iii) The pH of the solution.
(iv) Whether a base is strong or weak.
(v) Whether an acid is strong or weak.

What is the name of the indicator which can be used for testing the pH of a solution ?

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