Science General · Chemistry

Food Processing and Storage

2,379 Questions

Food processing and storage principles focus on preservation techniques, packaging methods, and preventing microbial contamination. These topics are essential for general science sections in various competitive examinations. Questions explore pasteurization, canning, chemical preservation, and safe food handling practices.

Food preservation methodsPasteurization techniquesFood packaging materialsMicrobial contamination preventionCryopreservation concepts

Food Processing and Storage Questions

Multiple choice

Meat and fish are covered with dry salt to

  1. make them tasty

  2. check the growth of bacteria

  3. make them spongy

  4. change the colour
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Meat and fish are covered with dry salt to check the growth of bacteria.

Multiple choice

Which of the following statements are correct? (a) Sugar reduces the moisture content that inhibits the growth of bacteria which spoil food. (b) Boiling kills many microorganisms. (c) Dry fruits and even vegetables are packed in air tight packets to prevent the attack of microbes. (d) Growth of microorganisms does not inhibit in very cold conditions.

  1. (a), (b) and (d)

  2. (a) and (b)

  3. (b) and (c)

  4. (a), (b) and (c)

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Growth of microorganisms is inhibited in very cold conditions.

Multiple choice

Which of the following is used as preservative for food?

  1. Ferric chloride

  2. Alum

  3. Sodium benzoate

  4. Salicylic acid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sodium benzoate is a widely used food preservative, especially in acidic foods like fruit juices, pickles, and soft drinks, as it inhibits the growth of mold and bacteria.

Multiple choice

Which of the following is used as food preservative?

  1. Sodium benzoate

  2. Salt of propanoic acid

  3. salt of sorbic acid

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 This is correct option because sodium benzoate , salts of propanoic acid and sorbic acid all are used as food preservatives.

Multiple choice

Increased flavorful shelf life of tomato has been achieved by

  1. developing better storage technique

  2. reducing activity of enzyme polygalacturonase

  3. increasing the activity of enzyme polygalacturonase

  4. enhancing epidermal growth factor
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Polygalacturonase helps in the ripening of tomatoes.

Multiple choice

Pasteurization of milk means

  1. heating of milk upto 100°C

  2. heating of milk at 65°C

  3. cooling of milk at 100°C

  4. cooling of milk upto 0°C

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pasteurization is a heat treatment process used to kill pathogens in milk. While specific temperatures vary, heating to approximately 63 to 65 degrees Celsius for 30 minutes is a standard method known as Low Temperature Long Time (LTLT) pasteurization.