Write the defination of binary solution?

Explanation

Food preservatives: Food preservatives are added to the food to prevent spoilage due to microbial growth. The most commonly used preservatives include table salt, sugar, vegetable oils and sodium benzoate. Salts of sorbic acid and propanoic acid are also used as food preservatives. Sodium benzoate is the most important food preservative. It is metabolised by conversion into hippuric acid which in finally excreted in the urine.