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Question

In the given titration, starch acts as a/an:

A
oxidising agent
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B
indicator
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C
reducing agent
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D
catalyst
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Solution

The correct option is D indicator

Starch as an indicator:

Starch is often used in chemistry as an indicator for redox titrations where triiodide is present. Starch forms a very dark blue-black complex with triiodide which can be made by mixing iodine with iodide (often from potassium iodide).


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