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JEE Main20207 Jan 2020Morning ShiftChemistryAminesActual

Consider the following reaction: The product ' X ' is used:

Options

  1. Ain protein estimation as an alternative to ninhydrin
  2. Bin acid base titration as an indicator
  3. Cas food grade colourant
  4. Din laboratory test for phenols

Correct answer

B. in acid base titration as an indicator

Step-by-step solution

Methyl orange is used as indicator in acid base titration. Azo coupling is the most widely used industrial reaction in the production of dyes, lakes and pigments. Aromatic diazonium ions acts as electrophiles in coupling reactions with activated aromatics such as anilines or phenols.

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