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Frying - Quiz
Contributed by: Robbins
  • 1. What percentage of calories can come from fat in fried foods due to oil absorption?
A) Up to 90%
B) Up to 75%
C) Up to 25%
D) Up to 50%
  • 2. What percentage of a battered chicken or fish's final weight is absorbed frying oil?
A) 15%
B) 20%
C) 40%
D) 35%
  • 3. What percentage of a breaded chicken or fish's final weight is absorbed frying oil?
A) 15%
B) 25%
C) 30%
D) 20%
  • 4. What is the final weight percentage of frying oil in doughnuts?
A) 15-20%
B) 5-10%
C) 25-30%
D) 35-40%
  • 5. What is the final weight percentage of frying oil in potato chips?
A) 35-40%
B) 10-15%
C) 15-20%
D) 50-60%
  • 6. Which vitamins are unstable at high temperatures according to the text?
A) Vitamin B12 and vitamin K
B) Vitamin E and biotin
C) Vitamin C and vitamin D
D) Thiamin, riboflavin, and vitamin A
  • 7. Why is vitamin C lost from fried foods during frying?
A) It reacts directly with frying oil
B) It is destroyed by oxidation
C) It transforms into protein
D) It is water soluble and lost during water evaporation
  • 8. What percentage of vitamin A is destroyed during frying?
A) 24%
B) 50%
C) 14%
D) 10%
  • 9. What percentage of vitamin A is destroyed when food is boiled?
A) 5%
B) 30%
C) 24%
D) 14%
  • 10. What causes fiber to increase in fried foods?
A) The absorption of plant-based frying oils
B) The breakdown of carbohydrates
C) The formation of brown melanoidins in the crust
D) The concentration of minerals
  • 11. Why does the proportion of protein increase in fried foods?
A) Due to the Maillard reaction absorbing nitrogen
B) Due to the addition of protein-rich oils
C) Due to the formation of melanoidins
D) Due to the concentrating effects of dehydration
  • 12. Which amino acid decreases in proportion due to its role in the Maillard reaction?
A) Valine
B) Lysine
C) Glycine
D) Leucine
  • 13. What unwanted substances found in some fish are concentrated during frying due to dehydration?
A) Heavy metals
B) Microscopic parasites
C) Synthetic plastics
D) Pesticides
  • 14. What toxic compounds are produced during frying and evaporate with steam?
A) Ketones
B) Alcohols
C) Aldehydes
D) Esters
  • 15. Give an example of an aldehyde produced during frying mentioned in the text.
A) Formaldehyde
B) Butyraldehyde
C) Acetaldehyde
D) Benzaldehyde
  • 16. What part of the human body can be irritated if frying fumes are inhaled?
A) Lung tissue
B) Skin cells
C) Liver cells
D) Stomach lining
  • 17. How have fumes from frying been classified by the International Agency for Research on Cancer?
A) Non-carcinogenic
B) Highly beneficial to health
C) Probably carcinogenic to humans
D) Definitely carcinogenic to humans
  • 18. What three elements cause degradation of oil during frying?
A) Sugar, cold temperatures, and nitrogen
B) Water, high temperatures, and oxygen
C) Acids, metals, and carbon dioxide
D) Salt, light, and pressure
  • 19. What effect does hydrolysis have on an oil's smoke point?
A) It eliminates it completely
B) It stabilizes it
C) It causes it to decrease
D) It causes it to increase
  • 20. What causes the formation of volatile compounds that change flavor, quality, and texture?
A) Dehydration
B) Oxidation
C) Hydrogenation
D) Hydrolysis
  • 21. What is another name for rapeseed oil?
A) Groundnut oil
B) Linseed oil
C) Sunflower oil
D) Canola oil
  • 22. What ranking does rapeseed oil hold among used frying oils?
A) Second most used
B) Third most used
C) Most used
D) Least used
  • 23. In which regions is rapeseed oil especially used?
A) Northern Europe, Japan, Oceania, and Canada
B) West Africa and South America
C) Central Africa and the Middle East
D) Central America and the Caribbean
  • 24. Why is rapeseed oil prone to oxidation despite mostly comprising monounsaturated fat?
A) Its low saturated fat content
B) Its low antioxidant content
C) Its high water content
D) Its high linolenic acid content
  • 25. What is another name for peanut oil?
A) Canola oil
B) Groundnut oil
C) Rapeseed oil
D) Olive oil
  • 26. Where is peanut oil commonly used?
A) Canada
B) West Africa
C) Japan
D) Northern Europe
  • 27. How does peanut oil differ from rapeseed oil regarding linolenic acid?
A) It has double the amount
B) It contains no fat at all
C) It is high in linolenic acid
D) It is low in linolenic acid
  • 28. Why is olive oil stable at high temperatures?
A) Because of its high monounsaturated fat and antioxidant content
B) Because of its high linolenic acid content
C) Because it contains no water
D) Because it is chemically hydrogenated
  • 29. How much more slowly does olive oil degrade compared to sunflower oil?
A) Five times as slowly
B) Ten times as slowly
C) Twenty times as slowly
D) Two times as slowly
  • 30. How much more slowly does olive oil degrade compared to linseed oil?
A) Fifty times as slowly
B) Five times as slowly
C) Ten times as slowly
D) Two times as slowly
  • 31. What might be the cause of fried food consumption not being linked to increased mortality in Mediterranean countries?
A) The consumption of green tea
B) The avoidance of fish
C) The high intake of vitamin C
D) The widespread use of olive oil
  • 32. What is used with a small amount of oil in air frying?
A) A chip pan
B) A deep fryer
C) An air fryer
D) A wok
  • 33. Which equipment can be used in an industrial frying operation for deep frying?
A) An air fryer
B) A sauté pan
C) A pressure fryer or vacuum fryer
D) A shallow pan
  • 34. What is one method for preparing food for deep frying that adds color and crunch?
A) Tossing in a wok
B) Battering or breading
C) Partial submerging
D) Boiling or steaming
  • 35. Which of the following is a common deep-fried food?
A) Doughnuts
B) Steamed rice
C) Scrambled eggs
D) Boiled potatoes
  • 36. What is tempura an example of?
A) A stir-fried food
B) A sautéed food
C) A deep-fried food
D) An air-fried food
  • 37. What feature do sauté pans usually have to prevent food from exiting while tossing?
A) Higher sides
B) A flat bottom
C) A concave shape
D) A built-in thermometer
  • 38. What is another name for shallow frying?
A) Air frying
B) Pan frying
C) Pressure frying
D) Deep frying
  • 39. What is stir frying?
A) A Chinese, high-heat technique using a wok
B) An industrial frying operation
C) An Italian technique using a deep fryer
D) A French technique using a shallow pan
  • 40. What temperature can the base of the wok reach during stir frying?
A) 200 °C (392 °F)
B) 100 °C (212 °F)
C) 500 °C (932 °F)
D) 400 °C (752 °F)
  • 41. According to a 2021 meta-analysis, the highest category of fried food consumption is associated with what increase in all-cause mortality?
A) 28%
B) 3%
C) 37%
D) 52%
  • 42. What percentage increase in heart failure was linked to the highest intake of fried food in the 2021 study?
A) 2%
B) 28%
C) 37%
D) 3%
  • 43. What was the increased risk of major cardiovascular events for those who ate the most fried food in the 2021 study?
A) 28%
B) 52%
C) 3%
D) 2%
  • 44. What increased risk of coronary heart disease was associated with a high intake of fried food in 2021?
A) 2%
B) 3%
C) 37%
D) 22%
  • 45. What relation did the 2021 study conclude fried food consumption has with cardiovascular disease?
A) A protective relation
B) No relation
C) A linear dose-response relation
D) An inverse relation
  • 46. According to a 2023 meta-analysis, fried food consumption is linked to what increase in the risk of stomach cancer?
A) 52%
B) 37%
C) 3%
D) 28%
  • 47. Around what year is frying believed to have first appeared?
A) 1000 BC
B) 500 AD
C) 1500 BC
D) 2500 BC
  • 48. In which ancient civilization did frying first appear?
A) Zhou dynasty
B) Ancient Greece
C) Ancient Rome
D) Ancient Egypt
  • 49. What was one of the first foods deep fried in oil according to history?
A) Tiger nut cakes
B) Corn tortillas
C) Wheat bread
D) Potato chips
  • 50. Which chemical change takes place during the frying process?
A) Protein synthesis
B) Cellulose breakdown
C) Enzymatic browning
D) Protein denaturation
  • 51. Which of the following is another chemical change that occurs during frying?
A) Protein oxidation
B) Alcohol evaporation
C) Starch gelatinization
D) Lactic acid fermentation
  • 52. In whose tomb are depictions of workers putting small cakes in pots of oil found?
A) King Tutankhamun
B) Vizier Ptahhotep
C) Pharaoh Ramses II
D) Egyptian Vizier Rekhmire
  • 53. During which Chinese period were the Rites of Zhou and the Book of Rites written?
A) Warring States period
B) Ming dynasty
C) Han dynasty
D) Tang dynasty
  • 54. Who described pancake-like griddle cakes made with sesame seeds and fried in olive oil?
A) Aristotle
B) Rekhmire
C) Apicius
D) Galen
  • 55. In what century did the Greek cook Galen describe griddle cakes fried in olive oil?
A) Late 2nd century AD
B) 15th century BC
C) 5th century AD
D) 2500 BC
  • 56. Which Roman cookbook describes a Delian sweet?
A) Rekhmire's Tombs
B) Book of Rites
C) Apicius
D) Rites of Zhou
  • 57. What is a Delian sweet made from?
A) Hardened wheat paste
B) Tiger nut flour
C) Sesame seed dough
D) Pickled meat paste
  • 58. What is created in the food's cell walls when water vaporizes during frying?
A) Pores
B) Crystals
C) Blisters
D) Cracks
  • 59. What causes the food's starch content to soften?
A) Dehydration
B) Carbonation
C) Denaturation
D) Gelatinization
  • 60. Which type of fats are most prone to oxidation and polymerization?
A) Polyunsaturated fats
B) Monounsaturated fats
C) Palmitic acid
D) Saturated fats
  • 61. What do oxidation and polymerization of fats form that are absorbed by food?
A) Toxic compounds
B) Monounsaturated fats
C) Vitamins
D) Oleic acid
  • 62. According to the 2022 WHO review of 170 studies, what did polyunsaturated fat consumption reduce?
A) Cancer risks
B) Vitamin E content
C) Palmitic acid levels
D) Overall mortality
  • 63. Which oxidizes more quickly: unsaturated fats or saturated fats?
A) Unsaturated fats
B) Saturated fats
C) They oxidize at the same rate
D) Neither oxidizes
  • 64. What can oils with a high linolenic acid content result in when reused?
A) Sweet fragrance
B) Fish-like smell
C) Foaming
D) Explosion
  • 65. How does reusing oil affect the saturated and trans fat content in foods?
A) Increases them
B) Has no effect
C) Removes them completely
D) Decreases them
  • 66. How does reusing oil affect monounsaturated and polyunsaturated fats in foods?
A) Has no effect
B) Reduces them
C) Doubles them
D) Increases them
  • 67. How do foods fried in reused oil behave regarding oil absorption?
A) They repel oil
B) They absorb more
C) They absorb no oil
D) They absorb less
  • 68. Which type of oils are more prone to foaming?
A) Saturated fats
B) Blended oils
C) Sunflower oil
D) Palm oil
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