Q

Litmus solution is derived from ________.

RRB NTPC (G) CBT-1, 8-Jan-21 S-2 2021
✓ Answer: D Lichen
Litmus is a dye extracted from lichens, which are symbiotic organisms consisting of fungi and algae or cyanobacteria. Litmus is commonly used as a pH indicator, turning red in acidic conditions and blue in alkaline conditions.
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