Q. Which of the following chemicals are commonly used as preservatives in the food industry?

1. Sodium benzoate
2. Benzoic acid
3. Potassium sorbate
4. Sorbic acid

Select the correct option from the codes given below:
Answer: 1, 2, 3 & 4
Notes: Sodium benzoate preserves acidic foods like jams and soft drinks. Benzoic acid occurs naturally in cranberries and is used in juices and sauces. Potassium sorbate is used in cheese, yogurt, wine and baked goods. Sorbic acid, similar to potassium sorbate, prevents mold and yeast growth. All four are widely employed as food preservatives.