Which of the following pair of natural sources and acid is correctly matched?
The correct answer is Tomato - Oxalic acid.
Key Points
- Oxalic acid is a chemical compound that occurs naturally in almost every plant to some degree, including fruit, vegetable and grain plants.
- Tomato contains more than 10 types of acids such as citric acid, malic acid, ascorbic acid, and oxalic acid etc.
- The oxalic acid content of tomatoes is about 50 mg per 100 g serving.
- Very ripe tomatoes generally contain higher oxalate amounts than less mature fruit.
Additional Information
- Some natural sources of acid:
| Natural Source | Acid |
| Vinegar | Acetic acid |
| Orange | Citric acid |
| Tamarind | Tartaric acid |
| Tomato | Oxalic acid |
| Sour milk (Curd) | Lactic acid |
| Lemon | Citric acid |
| Ant sting | Methanoic acid |
| Nettle sting | Methanoic acid |
