Dairy Technology MCQs 50 Score: 0 Attempted: 0/50 Subscribe 1. : The major component of milk is (A) Protein (B) Fat (C) Water (D) Minerals Show All Answers 2. : The average fat content in cow’s milk is about (A) 3.5% (B) 2% (C) 5% (D) 7% 3. : The process of heating milk to destroy pathogenic bacteria is called (A) Sterilization (B) Pasteurization (C) Homogenization (D) Dehydration 4. : The process used to prevent cream separation in milk is (A) Evaporation (B) Homogenization (C) Centrifugation (D) Cooling 5. : The protein mainly present in milk is (A) Casein (B) Collagen (C) Albumin (D) Gluten 6. : Skimmed milk is obtained by removing (A) Fat (B) Water (C) Proteins (D) Minerals 7. : The main carbohydrate in milk is (A) Lactose (B) Glucose (C) Sucrose (D) Fructose 8. : The enzyme responsible for curdling milk is (A) Rennin (B) Amylase (C) Pepsin (D) Lipase 9. : Ultra-High Temperature (UHT) processing of milk is carried out at (A) 135–150°C for 2–5 seconds (B) 72°C for 15 seconds (C) 100°C for 30 minutes (D) 60°C for 10 minutes 10. : Pasteurized milk should be stored at (A) 4°C (B) 10°C (C) 20°C (D) Room temperature 11. : The process of separating cream from milk is based on (A) Density difference (B) Temperature (C) Solubility (D) pH 12. : The major mineral present in milk is (A) Calcium (B) Sodium (C) Iron (D) Zinc 13. : The bacterium Lactobacillus bulgaricus is used in the production of (A) Yogurt (B) Cheese (C) Butter (D) Ice cream 14. : The normal pH of fresh milk is around (A) 6.6 (B) 5.0 (C) 7.5 (D) 8.0 15. : The flavor defect in milk due to oxidation is called (A) Rancidity (B) Sourness (C) Bitterness (D) Metallic flavor 16. : The process of removing water from milk to make milk powder is (A) Spray drying (B) Pasteurization (C) Freezing (D) Filtration 17. : Cream with more than 80% fat is called (A) Butter (B) Skimmed cream (C) Whipping cream (D) Double cream 18. : Chilling of milk immediately after milking is done to (A) Slow bacterial growth (B) Increase fat content (C) Change flavor (D) Increase acidity 19. : The average specific gravity of milk is (A) 1.028–1.034 (B) 1.000 (C) 1.050 (D) 1.010 20. : The first step in cheese manufacturing is (A) Milk standardization (B) Cutting the curd (C) Aging (D) Whey separation 21. : The enzyme lipase acts on (A) Fat (B) Protein (C) Carbohydrates (D) Vitamins 22. : The acid used for casein precipitation is (A) Lactic acid (B) Acetic acid (C) Citric acid (D) Hydrochloric acid 23. : Milk stone in dairy equipment is mainly composed of (A) Calcium and protein deposits (B) Sugar (C) Fat only (D) Iron oxide 24. : Which test is used to detect added water in milk? (A) Freezing point test (B) Gerber test (C) Resazurin test (D) Alcohol test 25. : The fat content of standardized milk in Pakistan is generally (A) 3.5% (B) 2% (C) 4.5% (D) 5% 26. : The flavor of butter is mainly due to (A) Diacetyl compound (B) Acetic acid (C) Butyric acid (D) Lactic acid 27. : The heat stability of milk is influenced by (A) pH and mineral content (B) Color (C) Density (D) Odor 28. : Condensed milk is prepared by (A) Removing part of water under vacuum (B) Adding sugar only (C) Boiling milk (D) Freezing 29. : Rennet is used in cheese making for (A) Coagulation of milk proteins (B) Fermentation (C) Pasteurization (D) Aging 30. : The shelf life of UHT milk is about (A) 3–6 months (B) 1 week (C) 10 days (D) 1 month 31. : The presence of coliform bacteria in milk indicates (A) Poor hygiene (B) High quality (C) Good fermentation (D) Pasteurization 32. : Ghee is mainly composed of (A) Milk fat (B) Proteins (C) Lactose (D) Water 33. : The standard test for milk fat determination is (A) Gerber test (B) Alcohol test (C) Sedimentation test (D) Clot-on-boiling test 34. : The equipment used for continuous milk pasteurization is (A) Plate heat exchanger (B) Double boiler (C) Vacuum evaporator (D) Spray dryer 35. : The microbial standard plate count is used to (A) Estimate bacterial load in milk (B) Measure fat content (C) Test for acidity (D) Detect added water 36. : The fat globule size in homogenized milk is approximately (A) 1 micron (B) 5 microns (C) 10 microns (D) 0.1 micron 37. : The whey obtained from cheese manufacture contains (A) Lactose and whey proteins (B) Casein (C) Fat only (D) Minerals only 38. : The process of converting milk into curd is (A) Fermentation (B) Coagulation (C) Precipitation (D) Blanching 39. : Ice cream overrun refers to (A) Amount of air incorporated during freezing (B) Melting rate (C) Fat separation (D) Protein content 40. : Lactose intolerance is due to deficiency of (A) Lactase enzyme (B) Amylase (C) Protease (D) Lipase 41. : The fat content of buffalo milk is generally (A) Higher than cow’s milk (B) Lower than cow’s milk (C) Same as cow’s milk (D) Fat-free 42. : The main cause of milk souring is (A) Lactic acid bacteria (B) Yeasts (C) Molds (D) Spores 43. : Sterilized milk differs from pasteurized milk in that it (A) Is heated at a higher temperature (B) Is cooled more slowly (C) Contains more fat (D) Has lower shelf life 44. : The shelf life of pasteurized milk is generally (A) 5–7 days (B) 1 day (C) 10 days (D) 2 weeks 45. : The by-product obtained during butter making is (A) Buttermilk (B) Whey (C) Skim milk (D) Cream 46. : Casein constitutes about what percentage of total milk protein? (A) 80% (B) 50% (C) 90% (D) 60% 47. : Reconstituted milk is prepared by (A) Adding water to milk powder (B) Removing cream (C) Mixing cream and skim milk (D) Adding preservatives 48. : Milk adulteration with water can be detected by (A) Lower freezing point (B) Color change (C) Increased viscosity (D) Fat increase 49. : The optimum storage temperature for butter is (A) Below 5°C (B) 15°C (C) 25°C (D) Room temperature 50. : The main objective of dairy processing is to (A) Improve shelf life and safety (B) Increase spoilage (C) Decrease nutrients (D) Reduce market value