Multiple choice

Which of the following is an organic acid?

  1. Hydrochloric acid

  2. Sulphuric acid

  3. Phosphoric acid

  4. Oxalic acid

  5. Boric acid

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

This is the correct option. Oxalic acid is an organic acid. It is used in various ways such as a rust remover, a cleaning agent on wood working, as stain lifter and as bleaching agent.