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How to preserve food - Test
Contributed by: Sadler
  • 1. Which of these is NOT a common method of food preservation?
A) Freezing
B) Drying
C) Digestion
D) Canning
  • 2. What is the primary goal of food preservation?
A) Make food more colorful
B) Prevent spoilage
C) Change the flavor
D) Increase cost
  • 3. What does canning do to preserve food?
A) Increases acidity
B) Creates an airtight seal
C) Adds vitamins
D) Changes the texture
  • 4. What is the main principle behind drying food?
A) Adding salt
B) Adding sugar
C) Increasing temperature
D) Removing moisture
  • 5. Which of these foods is commonly preserved through pickling?
A) Steak
B) Cucumbers
C) Apples
D) Bananas
  • 6. What does freezing food primarily prevent?
A) Enzyme activity
B) Color fading
C) Microbial growth
D) Oxidation
  • 7. What substance is typically used in smoking food for preservation?
A) Wood smoke
B) Sugar
C) Oil
D) Vinegar
  • 8. What is irradiation used for in food preservation?
A) Killing microorganisms
B) Increasing nutrients
C) Adding flavor
D) Changing texture
  • 9. Which gas is sometimes used in modified atmosphere packaging (MAP)?
A) Oxygen
B) Methane
C) Nitrogen
D) Hydrogen
  • 10. What is the role of salt in curing meat?
A) Adds sweetness
B) Increases moisture
C) Tenderizes meat
D) Inhibits bacterial growth
  • 11. Which type of acid is commonly used in pickling?
A) Citric acid
B) Acetic acid
C) Ascorbic acid
D) Lactic acid
  • 12. What temperature range is generally considered the 'danger zone' for food safety?
A) 0°F - 32°F
B) 212°F - 250°F
C) 40°F - 140°F
D) 150°F - 212°F
  • 13. Which preservation method relies on removing air to prevent oxidation and spoilage?
A) Vacuum packing
B) Brining
C) Fermentation
D) Pasteurization
  • 14. What effect does sugar have on the water activity of food?
A) Changes its pH
B) Increases it
C) Decreases it
D) Has no effect
  • 15. What process involves heating liquids to kill bacteria and then cooling them?
A) Blanching
B) Pasteurization
C) Sterilization
D) Dehydration
  • 16. Which preservation method often uses a combination of salt, sugar, and spices?
A) Freezing
B) Drying
C) Curing
D) Canning
  • 17. What is the purpose of blanching vegetables before freezing them?
A) To change the texture
B) To add flavor
C) To inactivate enzymes
D) To remove vitamins
  • 18. Which type of food is most often preserved by fermentation?
A) Beef
B) Apples
C) Bread
D) Cabbage
  • 19. What is the role of microbes in food fermentation?
A) Add sugar
B) Increase moisture
C) Produce acids
D) Eliminate nutrients
  • 20. Which fruit is commonly preserved using the jam-making process?
A) Potatoes
B) Strawberries
C) Lettuce
D) Carrots
  • 21. What is the purpose of adding pectin to jam?
A) To prevent spoilage
B) To add flavor
C) To increase acidity
D) To help it gel
  • 22. Which of the following methods best preserves the nutritional value of food?
A) Freezing
B) Drying
C) Canning
D) Pickling
  • 23. What is the benefit of using a pressure canner for low-acid foods?
A) Is faster
B) Uses less water
C) Reaches higher temperatures
D) Preserves color better
  • 24. What type of container is generally NOT recommended for freezing liquids?
A) Silicone container
B) Rigid plastic container
C) Plastic freezer bag
D) Glass jar filled to the top
  • 25. What is 'water activity' in relation to food preservation?
A) Water temperature
B) Water pH
C) Available water for microbial growth
D) Total water content
  • 26. What is the main ingredient in brining?
A) Oil
B) Vinegar
C) Sugar
D) Salt
  • 27. Which of these is NOT a sign of spoilage in canned goods?
A) Foul odor
B) Slight cloudiness
C) Bulging lid
D) Rusting can
  • 28. What does 'aseptic packaging' mean?
A) Food packaged without preservatives
B) Packaging made from recycled materials
C) Packaging that is easy to open
D) Sterilized food in a sterilized container
  • 29. Why is it important to properly label and date preserved food?
A) To improve appearance
B) To track storage time
C) To increase sales
D) To add nutritional information
  • 30. What is a common ingredient used in preserving citrus fruits?
A) Salt
B) Sugar
C) Oil
D) Vinegar
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