Question

Give two examples for each of the following :

(a) Chemical preservation/preservatives

(b) Food preservation by adding common salt

(c) Food preserved by adding sugar

(d) Food preserved by adding oil or vinegar​

Answer 1

Answer:

1(a)like hydrofluoric acids in plastic bottles

1(b)hydrochloric acids in glass bottles

2(a)in pickles and all salt is added to preserve idont know the second one

3(a)cakes are stored and preserved using vinegar and breads

Explanation:

Answer 2

Answer:

(a) Chemical preservation/preservatives.

Modern and industrial levels of preserving food, like canning and meat curing, typically involve three types of chemical preservatives: Benzoates (such as sodium benzoate) Nitrites (such as sodium nitrite) Sulphites (such as sulphur dioxide

(b) Food preservation by adding common salt.

Common salt has been used to preserve meat and fish for ages. Meat and fish are covered with dry salt to check the growth of bacteria. Salting is also used to preserve amla, raw mangoes, tamarind, etc.

(c) Food preserved by adding sugar.

Jams, jellies and squashes are preserved by sugar. Sugar reduces the moisture content which inhibits the growth of bacteria which spoil food.

(d) Food preserved by adding oil or vinegar.Oil and vinegar are used in food preservation because food spoilage microorganisms cannot survive in such an environment. Complete Answer: Oil and vinegar are used for the preservation of vegetables, fish, and meat. Immersion of food in vinegar to preserve it is known as pickling.