Principles of Food Preservation MCQs | Page - 7

Dear candidates you will find MCQ questions of Principles of Food Preservation here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

πŸ“Š Principles of Food Preservation
Q. The process 2-3’ is known as the
  • (A) evaporation
  • (B) de-superheating process
  • (C) condensation
  • (D) superheating process
πŸ’¬ Discuss
βœ… Correct Answer: (B) de-superheating process

Explanation: the process 2-3’-3-4 is the cumulative heat rejection process of a condenser with

πŸ“Š Principles of Food Preservation
Q. Which one of the following pathway represents the condensation process of the refrigerant in a refrigeration cycle?
  • (A) 2-3’
  • (B) 3-4
  • (C) 3′-3
  • (D) 1-2
πŸ’¬ Discuss
βœ… Correct Answer: (C) 3′-3

Explanation: the process 2-3’-3-4 is the cumulative heat rejection process of a condenser with

πŸ“Š Principles of Food Preservation
Q. Which of the following is valid when it comes to the future of antibiotics in food?
  • (A) should have no harmful effect on man when taken by mouth and preferably should be metabolizable
  • (B) the economy of use, ease of use and reliability of control and detection must exist
  • (C) preferably compatible with other methods of permanent preservation
  • (D) all of the mentioned
πŸ’¬ Discuss
βœ… Correct Answer: (D) all of the mentioned

Explanation: all of the mentioned are valid when it comes to the future of antibiotics in food.

πŸ“Š Principles of Food Preservation
Q. Which of the following is a naturally occurring antioxidant?
  • (A) hydroquinone
  • (B) ascorbic acid
  • (C) vitamin e
  • (D) all of the mentioned
πŸ’¬ Discuss
βœ… Correct Answer: (D) all of the mentioned

Explanation: all of the mentioned are naturally occurring antioxidants.

πŸ“Š Principles of Food Preservation
Q. Which of the following is true about synergism?
  • (A) the mechanism of synergism depends on the nature of synergist, the antioxidant and the fat
  • (B) synergists do not have antioxidant properties alone
  • (C) when two or more antioxidants combine, a greater effect than a single antioxidant is produced. this is referred to as synergism
  • (D) all of the mentioned
πŸ’¬ Discuss
βœ… Correct Answer: (D) all of the mentioned

Explanation: all of the mentioned is true about synergism.

πŸ“Š Principles of Food Preservation
Q. 1%.
  • (A) calcium
  • (B) magnesium
  • (C) sodium
  • (D) all of the mentioned
πŸ’¬ Discuss
βœ… Correct Answer: (A) calcium

Explanation: calcium salts are used in many fruit processing operations in concentrations below 0.1%.

πŸ“Š Principles of Food Preservation
Q. Which of the following is the use of waxing in plant tissues?
  • (A) reduces shrinkage losses
  • (B) reducing water losses due to evaporation
  • (C) thick leads to anaerobic respiration conditions and thin coat offers little control over moisture losses
  • (D) all of the mentioned
πŸ’¬ Discuss
βœ… Correct Answer: (D) all of the mentioned

Explanation: all of the mentioned are uses of waxing in plant tissues.

πŸ“Š Principles of Food Preservation
Q. When the coloring is truly artificial, the food statement “food color added” needs to be added.
  • (A) true
  • (B) false
  • (C) ---
  • (D) ---
πŸ’¬ Discuss
βœ… Correct Answer: (B) false

Explanation: when the coloring is truly artificial, the food statement “food color added” is insufficient as the consumer may assume that the color has been derived from the food itself. the statement required is “artificial coloring”.

πŸ“Š Principles of Food Preservation
Q. What cannot be a size of membrane?
  • (A) nano porous
  • (B) macroporous
  • (C) microporous
  • (D) non-porous
πŸ’¬ Discuss
βœ… Correct Answer: (A) nano porous

Explanation: a membrane cannot be nano porus.

πŸ“Š Principles of Food Preservation
Q. If the pressure drop(ΔP) is 1000 units, the flux(J) is 50 units,what is the hydraulic membrane permeability?
  • (A) 0.02
  • (B) 0.04
  • (C) 0.05
  • (D) 0.06
πŸ’¬ Discuss
βœ… Correct Answer: (C) 0.05

Explanation: since l= j/Δp, l= 0.05 .

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