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Residue and contaminant analysis MCQs Food science

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1. . What is the primary purpose of residue analysis in food science?





2. . Which analytical technique is commonly used to detect pesticide residues in food?





3. . What is the role of Liquid Chromatography (LC) in residue analysis?





4. . Which method is used to confirm the presence of heavy metals in food?





5. . What does the term ‘limit of detection’ (LOD) refer to in residue analysis?





6. . Which of the following is a common pesticide residue found in fruits?





7. . Which regulatory body sets limits for pesticide residues in food in the United States?





8. . What is the significance of using a matrix-matched calibration in residue analysis?





9. . Which technique is used for the analysis of mycotoxins in food products?





10. . What is the purpose of sample homogenization in residue analysis?





11. . Which type of contamination is most likely to be identified using Atomic Absorption Spectroscopy (AAS)?





12. . What is a common sample preparation technique for residue analysis?





13. . Which method is used for the detection of residual antibiotics in food?





14. . Which of the following is a common contaminant in dairy products?





15. . In residue analysis, what does the term ‘recovery’ refer to?





16. . Which technique is used for the analysis of volatile organic compounds in food?





17. . Which type of contamination is analyzed using High-Performance Liquid Chromatography (HPLC)?





18. . What does ‘quantitative analysis’ in residue analysis mean?





19. . Which of the following is used to assess the risk of pesticide residues in food?





20. . What is the purpose of ‘clean-up’ procedures in residue analysis?





21. . What type of analysis is used to detect aflatoxins in food products?





22. . Which analytical technique is known for its high sensitivity in detecting trace levels of contaminants?





23. . What is the main challenge in detecting low-level pesticide residues in food?





24. . What does ‘precision’ refer to in residue analysis?





25. . Which of the following methods is used for the detection of PCB residues?





26. . What is the purpose of a ‘blank’ sample in residue analysis?





27. . Which substance is commonly used to validate the performance of residue analysis methods?





28. . What is a common method for extracting pesticide residues from food samples?





29. . Which technique is used to determine the presence of chlorinated hydrocarbons in food?





30. . What is the function of a ‘spike’ in residue analysis?





31. . Which method is used to measure the levels of heavy metals in food?





32. . What is the primary goal of using ‘blank’ and ‘spiked’ samples in residue analysis?





33. . Which contaminant is most commonly associated with agricultural products?





34. . What does ‘matrix effect’ refer to in residue analysis?





35. . Which technique is used to analyze the presence of dioxins in food?





36. . What is the purpose of using a ‘standard reference material’ in residue analysis?





37. . Which method is most effective for the analysis of multiple pesticide residues simultaneously?





38. . What type of contamination is usually detected using Mass Spectrometry (MS)?





39. . What is the main advantage of using Gas Chromatography-Mass Spectrometry (GC-MS) for residue analysis?





40. . Which of the following is a common contaminant found in seafood?





41. . What does ‘accuracy’ refer to in residue analysis?





42. . Which method is commonly used for detecting trace levels of mycotoxins in food?





43. . What is the function of a ‘standard addition’ method in residue analysis?





44. . Which contaminant is associated with the use of certain food packaging materials?





45. . What does ‘selectivity’ refer to in the context of residue analysis?





46. . What is the purpose of a ‘calibration curve’ in residue analysis?





47. . Which technique is used for the detection of radioactivity in food samples?





48. . What does ‘sensitivity’ refer to in residue analysis?





49. . Which of the following is an example of a non-targeted analysis technique?





50. . Which of the following contaminants is commonly associated with the use of agricultural chemicals?





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