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Question: Starch paper is used to test for the presence of....

Starch paper is used to test for the presence of.

A

Iodine

B

Oxidising agent

C

Iodide ion

D

Reducing agent

Answer

Iodine

Explanation

Solution

Starch paper are used for iodine test

as: I−+oxidant →I2I^{-} + \text{oxidant }\overset{\quad\quad}{\rightarrow}I_{2}

I2+starch→blue colourI_{2} + \text{starch}\overset{\quad\quad}{\rightarrow}\text{blue colour}