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.