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Test your basic knowledge |
Advanced Food Processing
Start Test
Study First
Subjects
:
industries
,
engineering
Instructions:
Answer 33 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 100 RAD
Radiation Absorbed Dose (RAD)
Gamma rays
Penetration Depth
1 GY
2. Determines the amount of heat generated from the absorbed energy
Microwaves
gamma rays
0.12 KGY
Dielectric Loss
3. Determines how far the MWs penetrate into the food and it is affected by the above two parameters plus others
Second mechanisms by which IR achieves biological stability in food
irradiated
gamma rays
Penetration Depth
4. Food treated with ionizing radiation (IR) is said to be
true
Second mechanisms by which IR achieves biological stability in food
Cesium 137
irradiated
5. Indirect Effect- ionization of molecules that produces ion pairs (by knocking off an electron) and free radicals (by breaking bonds) result in chemical reactions that interrupt biological functions
0.1-1 KGY)
Gamma rays
Second mechanisms by which IR achieves biological stability in food
Radio waves
6. 1000 GY
0.1-1 KGY)
Radiation Absorbed Dose (RAD)
Cesium 137
1 KGY
7. What changes take place when energy is applied?
true
0.005 KGY
Chemical and physical
Radiation Absorbed Dose (RAD)
8. Dose required to kill insects?
Dielectric Constant
Cobalt 59
Microwaves
0.12 KGY
9. Traditional unit of measuring the amount of energy absorbed by food
Radiation Absorbed Dose (RAD)
UV in the range of 200-280 nm
Cobalt 60
The Electromagnetic Spectrum (EMS)
10. High frequency & short wave length
0.005 KGY
0.12 KGY
True
Gamma rays
11. What kind of rays does Cobalt 60 emit?
gamma rays
0.005 KGY
1 KGY
irradiated
12. Killing insects and eggs
Penetration Depth
Gamma rays
Dielectric Constant
0.2-5 KGY
13. The quantity of radiation that results in the absorption of 100 ergs per gram of food
Gamma rays
The Electromagnetic Spectrum (EMS)
Radiation Absorbed Dose (RAD)
Radio waves
14. Dose required to kill bacterial spores?
0.005 KGY
Gamma rays
When issued - approval includes
50 KGY
15. Is also used in limited extent in food irradiation.
Cesium 137
The Electromagnetic Spectrum (EMS)
When issued - approval includes
UV in the range of 200-280 nm
16. Describes a continuous range of radiation energy having an electric and a magnetic component
Cobalt 59
When issued - approval includes
The Electromagnetic Spectrum (EMS)
0.005 KGY
17. The common source of energy in food irradiation
Radio waves
Cobalt 60
0.12 KGY
5 KGY
18. Which waves vary in frequency and are closer to Radio waves frequencies
Microwaves
50 KGY
2-5 KGY
Penetration Depth
19. Direct Effect- a bullet-like effect with high energy particles impacting the vital parts of the cell
0.2-5 KGY
The Electromagnetic Spectrum (EMS)
Second mechanisms by which IR achieves biological stability in food
First mechanisms by which IR achieves biological stability in food
20. Made into an unstable isotope by neutron bombardment
The Electromagnetic Spectrum (EMS)
UV in the range of 200-280 nm
Dielectric Loss
Cobalt 59
21. The food category - the purpose of irradiation - and the dose permitted in KGY
0.2-5 KGY
True
When issued - approval includes
gamma rays
22. What is the half life of Cobalt 60?
5 Years
irradiated
50 KGY
0.2-5 KGY
23. Dose required to kill yeast and mold?
Radiation Absorbed Dose (RAD)
irradiated
true
5 KGY
24. Sprouting inhibition and
0.1-1 KGY)
100 KGY dose
Gamma rays
5 KGY
25. Dose required to kill virus?
100 KGY dose
true
Food Irradiation
Radiation Absorbed Dose (RAD)
26. Gamma rays have high penetration capability
true
Dielectric Loss
5 KGY
Cesium 137
27. Pasteurization of herbs and spices
2-5 KGY
First mechanisms by which IR achieves biological stability in food
0.1-1 KGY)
Radio waves
28. Determines the affinity of a food system to absorb microwaves
Radiation Absorbed Dose (RAD)
Dielectric Constant
5 KGY
2-5 KGY
29. Dose required to kill a man
Cesium 137
0.005 KGY
Radiation Absorbed Dose (RAD)
0.2-5 KGY
30. These rays have no penetration depth hence it will only achieve surface inactivation of microorganisms
1 GY
UV in the range of 200-280 nm
50 KGY
5 Years
31. Utilizing (IR) to achieve biological stability of food by inhibiting or minimizing spoilage reactions
Cesium 137
5 KGY
Food Irradiation
Microwaves
32. Low frequency & long wave length
Microwaves
Radiation Absorbed Dose (RAD)
Food Irradiation
Radio waves
33. -the more complex the biological system is the less amount of IR required to induce changes
True
Penetration Depth
Radio waves
Cesium 137