Question 17 - MCQs from NCERT Exemplar - Chapter 2 Class 10 - Acids, Bases and Salts

Last updated at Dec. 16, 2024 by

Which one of the following can be used as an acid–base indicator by a visually impared student?

(A) Litmus

(B) Turmeric

(C) Vanilla essence

(D) Petunia leaves

 

Answer

 

For visually impaired students, we need an Olfactory indicator . Which smells different in acids and bases.

Indicators of acids and bases-Teachoo.jpg

Vanilla essence can be used as an acid-base indicator by visually impaired students as it is an olfactory indicator whose odour changes in acidic or basic media.

 

So, the correct answer is (c) vanilla essence

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