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What colour do the following indicators turn when added to a base? Turmeric indicator

Name two substances which can be used as olfactory indicators ?

The substance that is neutral to litmus

Solution A turns universal indicator blue to purple whereas solution B turns universal indicator orange to red. (a). What will be the action of solution A on litmus? (b). What will be action of solution B on litmus? (c) Name any two substances which can give solutions like A. (d). Name any two substances which can give solutions like B. (e). What sort of reaction takes place when solution A reacts with solution B?

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