Check sibling questions

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

CA Maninder Singh's photo - Expert in Practical Accounts, Taxation and Efiling

Made by

CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo