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Which one of the following can be used as an acid-base indicator by a visually impaired (blind) student ?
- (a)Turmeric
- (b)Vanilla essence
- (c)Methyl orange
- (d)Litmus
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(B) / Vanilla essence (1 Mark)
Which one of the following can be used as an acid-base indicator by a visually impaired (blind) student ?
CBSE Class 10 Science PYQ · Acids, Bases and Salts · Indicators · 1 Mark · March 2026 · Standard
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