Which of the following is not considered as an indicator?

Phenolphthalein

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Methyl chloride

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Methyl orange

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Turmeric

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Solution

The correct option is B
Methyl chloride

Methyl chloride cannot act as an indicator because it does not show any colour change in acidic or basic medium whereas methyl orange, phenolphthalein and turmeric are well-known indicators.

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Similar questions

The indicators which turn red in acid solution are :

(a) turmeric and litmus

(b) phenolphthalein and methyl orange

(d) phenolphthalein and litmus

	Indicator	Colour change in basic medium
(1)	Litmus paper	Red to blue
(2)	Methyl orange	Orange to red
(3)	Phenolphthalein	Colourless to pink
(4)	Turmeric	Yellow to reddish brown

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