Multiple choice

An indicator prepared from artificial substances is known as synthetic indicator. Which of the following is/are synthetic indicators?

  1. Methyl orange

  2. Methyl orange and litmus

  3. Litmus

  4. Methyl orange and phenolphthalein

  5. Litmus and phenolphthalein

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. Methyl orange and phenolphthalein are both synthetic indicators.