Food Analysis MCQs 50 Score: 0 Attempted: 0/50 1. Food analysis is mainly carried out to determine: (A) Nutritional value (B) Chemical composition and quality (C) Storage conditions (D) Temperature of foodShow All Answers 2. The main objective of food analysis is to: (A) Develop new recipes (B) Promote advertising (C) Ensure food safety and standards (D) Increase food prices 3. The moisture content of food is determined by: (A) Oven drying method (B) Kjeldahl method (C) Soxhlet method (D) Refractometer 4. The principle of the Soxhlet apparatus is based on: (A) Distillation (B) Filtration (C) Evaporation (D) Solvent extraction 5. Protein content in food is determined by: (A) Kjeldahl method (B) Soxhlet method (C) Refractometer (D) Polarimeter 6. The ash content in food indicates: (A) Fat content (B) Mineral content (C) Vitamin loss (D) Sugar content 7. The instrument used to measure pH of a solution is: (A) pH meter (B) Spectrophotometer (C) Chromatograph (D) Thermometer 8. The method used for fat determination is: (A) Kjeldahl method (B) Gravimetric method (C) Soxhlet extraction (D) Titration method 9. The total soluble solids in fruit juice are measured using: (A) Polarimeter (B) Hydrometer (C) Calorimeter (D) Refractometer 10. The color of food samples is usually measured by: (A) Spectrophotometer (B) Chromatography (C) Titration (D) Drying oven 11. The principle of chromatography is based on: (A) Evaporation (B) Diffusion (C) Adsorption and partition (D) Crystallization 12. The Brix value of a fruit juice indicates: (A) Acidity (B) Moisture (C) Sugar content (D) Protein content 13. Acidity in food is commonly measured by: (A) Titration with NaOH (B) Filtration (C) Evaporation (D) Chromatography 14. The calorific value of food can be determined using: (A) Kjeldahl apparatus (B) Spectrophotometer (C) Polarimeter (D) Bomb calorimeter 15. Which method is used for determination of crude fiber? (A) Soxhlet extraction (B) Distillation method (C) Acid and alkali digestion method (D) Titration method 16. The carbohydrate content of food can be determined by: (A) Soxhlet method (B) Anthrone method (C) Kjeldahl method (D) Refractometer 17. The refractive index increases with: (A) Decrease in sugar content (B) Increase in sugar concentration (C) Increase in acidity (D) Increase in temperature 18. The method used to separate volatile compounds from food is: (A) Distillation (B) Centrifugation (C) Filtration (D) Evaporation 19. The determination of nitrogen in food by the Kjeldahl method involves: (A) Digestion, distillation, and titration (B) Extraction, evaporation, and filtration (C) Cooling, drying, and mixing (D) Heating, freezing, and blending 20. The moisture analyzer works on the principle of: (A) Cooling (B) UV radiation (C) Infrared drying (D) Blending 21. Food adulteration can be detected through: (A) Nutritional survey (B) Sensory evaluation only (C) Packaging study (D) Analytical testing 22. Chromatography is mainly used for: (A) Separation of mixtures (B) Measuring weight (C) Calculating density (D) Measuring heat 23. The equipment used to determine food color intensity is: (A) Thermometer (B) Refractometer (C) Polarimeter (D) Colorimeter 24. Titration is used for: (A) Measuring weight (B) Separating solids (C) Measuring concentration of a solution (D) Estimating moisture 25. The fat extraction solvent commonly used in Soxhlet method is: (A) Acetone (B) Ether (C) Water (D) Alcohol 26. Which of the following is used for vitamin analysis? (A) HPLC (B) pH meter (C) Bomb calorimeter (D) Oven dryer 27. The abbreviation HPLC stands for: (A) Heavy Phase Liquid Chromatography (B) High Precision Light Chromatography (C) High Pressure Liquid Chromatography (D) High Potential Level Chromatography 28. The presence of reducing sugars can be tested by: (A) Fehling’s test (B) Iodine test (C) Benedict’s test (D) Both (A) and (C) 29. Total ash in food is determined by heating the sample at: (A) 37°C (B) 100°C (C) 550°C (D) 200°C 30. The equipment used to measure density of liquids is: (A) Thermometer (B) Hydrometer (C) Polarimeter (D) Viscometer 31. The optical rotation of sugar solution is measured by: (A) Polarimeter (B) Colorimeter (C) Spectrophotometer (D) Refractometer 32. The acid value of fats determines: (A) Moisture content (B) Degree of rancidity (C) Ash value (D) Protein level 33. The iodine value of fats gives an idea about: (A) Water activity (B) Free fatty acids (C) Ash content (D) Degree of unsaturation 34. The peroxide value of oil measures: (A) Moisture content (B) Heat stability (C) Oxidative rancidity (D) Color 35. The saponification value indicates: (A) Sugar concentration (B) Moisture content (C) Average molecular weight of fat (D) Protein amount 36. The sample homogenization in food analysis is done to: (A) Remove moisture (B) Ensure uniform composition (C) Increase shelf life (D) Change pH 37. The term “proximate analysis” includes determination of: (A) Moisture, ash, fat, protein, fiber, and carbohydrate (B) Only protein and fat (C) Vitamins and minerals only (D) Flavor compounds 38. The main principle of spectrophotometry is: (A) Refraction of light (B) Reflection of light (C) Emission of heat (D) Absorption of light by a substance 39. The term “LOD” in analytical chemistry means: (A) Limit of Decomposition (B) Level of Dilution (C) Loss of Data (D) Limit of Detection 40. The analytical balance is used for: (A) Measuring volume (B) Accurate weighing of samples (C) Determining density (D) Checking moisture 41. The presence of starch in food can be detected by: (A) Benedict’s test (B) Fehling’s test (C) Iodine test (D) Ninhydrin test 42. The chemical used for protein digestion in Kjeldahl method is: (A) Nitric acid (B) Hydrochloric acid (C) Concentrated sulfuric acid (D) Acetic acid 43. The unit of absorbance in spectrophotometry is: (A) Mole (B) Joule (C) Watt (D) No unit 44. The calibration of instruments ensures: (A) Faster testing (B) Accuracy and reliability of results (C) More color intensity (D) Increase in moisture 45. The method used to separate amino acids is: (A) Sedimentation (B) Distillation (C) Paper chromatography (D) Drying 46. The titratable acidity of fruit juice is expressed as: (A) Glucose percentage (B) Citric acid percentage (C) Protein content (D) Fat percentage 47. The refractometer reading decreases with: (A) Increase in viscosity (B) Increase in sugar (C) Decrease in pH (D) Increase in temperature 48. The sample size used for moisture determination should be: (A) Only top layer (B) Very small random portion (C) Representative of total sample (D) Only bottom part 49. Sensory analysis differs from instrumental analysis because it: (A) Uses chemical reagents (B) Uses human senses for evaluation (C) Measures physical parameters (D) Is computer-based 50. The accuracy of food analysis results depends mainly on: (A) Temperature of room (B) Sample color (C) Proper sampling and calibration (D) Brand of instrument