Food processing and Preservation Quiz – 16


Q. Which method/s of food preservation are used in making jam

  • Removal of oxygen
  • Modifying moisture levels
  • Temperature
  • All of the above

Answer: d)

Q. Which of the following methods remove oxygen

  • Bottling
  • Removing the air from sausages before freezing them
  • Vacuum packaging
  • All of the above

Answer: d)

All the above mentioned method is process with removing oxygen. Bottling is mainly used for fruits and vegetables.

Q. ___________ is the quantity of heat required to  change the state or condition under which  a substance exists, without changing its temperature

  • Latent heat
  • Sensible heat
  • Specific heat
  • Internal heat

Answer: a)

Latent heat: The heat required to change the state of a substance at constant temperature is called latent heat.

Q. Commercial and household refrigerators are operated at __________ temperatures

  • 0-5C
  • 1-2 C
  • 2.2- 5 C
  • 4.5- 7 C

Answer: d)

The refrigerator should be kept at or below 40 °F (4 °C) and the freezer should be regulated at 0 °F (−18 °C). Refrigeration is an essential food storage technique around the world. The lower temperature lowers the reproduction rate of bacteria, so the refrigerator reduces the rate of spoilage.

Q. In this type of freezing method the food is dipped in the refrigerant

  • Blast freezer
  • Fluidized bed drier
  • Slush freezer
  • None of the options

Answer: d)

In immersion freezing, food products are immersed in brine or another fluid with a low-freezing point.


  • Shruthi
    July 29, 2022


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