Food Preservation and Methods

Q.

What is food preservation? Name three common chemical food preservatives. [3 MARKS]

Q.

State the differences between

(a) Decay and putrefaction.

(b) Pasteurization and sterilization.

Q.

Which of the following is not a method of food preservation?

1. Salting

2. Refrigeration

3. Dehydration

4. Fermentation

Q. Boiling food helps in killing the microorganisms present in it.

1. True
2. False

Q.

Which of the following methods can be used to sterilize milk and milk products?

1. Pasteurization

2. Salting

3. Chemical preservatives

4. Dehydration

Q. Name any two special chemicals which are used as food preservatives.​

Q.

What is added to pickle for a long time preservation?

__

Q. ___ is almost always added to pickles to preserve it for a long time.

Q.

Why vegetables kept in the refregerator gets dry?

Q.

What is added to pickle for a long time preservation?

__

Q. is a process of preserving food using salt and vinegar.

1. Refrigeration
2. Acidification
3. Pickling

Q.

Which method is used to eliminate pathogens and preserve milk?

1. Pasteurization

2. Adding sugar

3. Irradiation

4. Refrigeration

Q.

Which of the following method helps in food preservation?

1. Addition of salts or acid

2. Addition of sugar

3. Pasteurization

4. All of these

Q. Identify the food preservatives.

1. Dry salt
2. Sugar
3. Ketchup
4. Vinegar
5. Oil
6. Water
7. Brine
8. Yeast

Q. In vinegar pickling method, due to the presence of the acidity of the solution increases.

1. lactic acid
2. acetic acid
3. oxalic acid

Q.

Which of the following is not a method of food preservation?

1. Fermentation

2. Refrigeration

3. Dehydration

4. Salting