correct set of natural indicator among them is
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Answer:
d ii iv is the correct answers
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Explanation:
Indicators are the substances that change their colour when added to acidic or basic solutions. They indicate that the given solution is acidic or basic.
Natural indicators are obtained from natural sources.
In the picture attached , turmeric and litmus solutions are the natural indicators where as methyl orange and phenolpthalein can be synthesized artificially hence they are synthetic indicators.
The correct answer should be none of these or (i),(iii)
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