Chemistry · Food Adulteration Chemistry
Metanil yellow, a non-permitted synthetic dye, is frequently used to adulterate turmeric powder. Which of the following chemical tests can confirm its presence?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Mixing with saturated saltwater and checking for immiscible layers
- 2Boiling the sample in pure water and observing dense sediment formation
- 3An alcohol and hydrochloric acid test yielding a distinct pink color✓
- 4Adding vinegar and checking for rapid effervescence
Correct answer
An alcohol and hydrochloric acid test yielding a distinct pink color
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