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Indian Navy Pilot Chemistry — practice questions

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Substances whose odour changes in acidic or basic media are called:Read the answer and worked solution →

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Substances whose odour changes in acidic or basic media are called:

  1. Natural indicators
  2. Synthetic indicators
  3. Olfactory indicators
  4. Acid-base indicators
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Correct answer: C. Olfactory indicators

1. Indicators whose smell changes in acidic or basic solutions are a special class. 2. Substances like onion and vanilla extract change their odour in acids and bases. 3. These are called olfactory indicators. _Source: RRB Group D CEN-02/2018 PYQ, Q.27._

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