Question

‘Litmus’, a natural dye is an extract of which of the following?

• A. China rose (Gudhal)
• B. Beetroot
• C. Lichen
• D. Blueberries (Jamun)

Answer 1

The correct option is C

Lichen

Explanation for the correct option:

Option(C):Lichen

• Litmus is known as the most commonly used natural indicator.
• It is a purple dye, which is extracted from Lichen, a plant belonging to the division Thallophyta.
• Litmus is commonly used as an acid-base indicator.
• When added to an acidic solution, it turns red whereas when added to a basic solution, it turns blue.

Explanation for the incorrect option:

Option(C): China rose (Gudhal)

• China rose turns acidic solutions dark pink, basic solutions green, and neutral solutions remain colorless.
• Litmus is not an extract of China rose.
• Hence, the given Option is an incorrect one.

Option(C): Beetroot

• In animals, beetroot extract has been shown to minimize tumor cell division and development.
• Beetroot is not a substance from which we can extract litmus.
• Hence, the given option does not coincide with the correct concept.

Option(C): Blueberries (Jamun)

• Blueberry extract is a natural health supplement derived from blueberry juice which has been concentrated.
• We can not extract litmus, from Blueberries (Jamun).
• Hence, the given option does not represent the correct answer.

Hence, ‘Litmus’, a natural dye is an extract of: Lichen.