A visually challenged student has to perform a lab test to detect the presence of acid in a given solution. The acid-base indicator preferred by him will be:
A. Blue litmus
B. Clove oil
C. Red cabbage extract
D. Hibiscus extract
Answer:B
A visually challenged student has to perform a lab test to detect the presence of acid in a given solution. The acid-base indicator preferred by him will be:
A. Blue litmus B. Clove oil C. Red cabbage extract D. Hibiscus extract
Explanation: Clove oil is an olfactory indicator. These are the substances that give one type of odour in an acidic medium so a visually challenged student prefers to use clove oil as an acid-base indicator.