Multiple choice

When a few drops of HCl are added to test the presence of metanil yellow, the colour which indicates its presence is

  1. pink

  2. yellow

  3. orange

  4. red

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A Correct answer
Explanation

The adulterant added to dal is metanil yellow. Its presence can be tested in dal by adding a few drops of HCl to a test sample. If the solution turns pink in colour, it indicates the presence of metanil yellow.