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Acids, Bases and Salts — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceAcids, Bases and Salts1 Mark
MCQ
The natural indicator litmus is extracted from:
  • A
    beetroot
  • B
    china rose
  • ✓
    lichens
  • D
    turmeric
✓

Answer

Correct option: C.
lichens
The natural indicator litmus is extracted from lichens. Acids turn blue litmus red and bases turn red litmus to blue.
China rose contains anthocyanin which also acts as the natural indicator. Other natural indicators are beetroot and turmeric.

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