What are indicators? Name some.
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A. Those substances which give different colour indifferent medium and thus indicate the presence of acid or base in a solution are called indicators.
B. Natural indicators : Turmeric, beetroot.
Synthetic indicators : Phenolphthalein and Methyl orange
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Indicator s are the substance s used to define whether the object is acid or base . such as litmus paper & trymos blue
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