The Blue Color in a Well-Known Test for the Presence

question 19

Multiple Choice

The blue color in a well-known test for the presence of starches is due to

• A) the formation of crosslinks between molecules of starch, caused by the addition of Cu²⁺
• B) the reaction of the silver-ammonia complex ion with the hydroxyl groups of the starch
• C) the formation of a complex between iodine and amylose
• D) none of these

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A hopeful outlook towards future events, believing in positive outcomes.

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