Which of the following examples includes a chemical technique of improving food quality melting of chocolate. removing excess mercury from a canned tuna product using beaters to whip air into egg whites to form meringue all of the choices are correct.

Option (b) is the correct answer.

Explanation:

Chemical techniques help in maintaining the food quality in various ways like they preserve the food, help in removing impurities etc.

For example, pickles are kept safer for longer period of time by the addition of preservatives like sodium benzoate.

Thus, we can conclude that the example of removing excess mercury from a canned tuna product includes a chemical technique of improving food quality.

b) the inside picture would look at a very high temperature in a very low ph