Milk and Milk Products problems
- 1. An alkaline reaction in milk is caused by the alkali formers bacteria as
Options- A. Pseudomonas fluorescens
- B. A. viscolactis
- C. both (a) and (b)
- D. none of these Discuss
Correct Answer: both (a) and (b)
- 2. Pseudomonas nigrifaciens in mildly salted butter may cause
Options- A. black smudge
- B. greenish areas
- C. pink color
- D. none of these Discuss
Correct Answer: black smudge
- 3. A yellow color in the creamy layer of milk may be caused by
Options- A. Pseudomonas synxantha
- B. Pseudomonas syncyanea
- C. both (a) and (b)
- D. S. marcescens Discuss
Correct Answer: Pseudomonas synxantha
- 4. The chief type of spoilage in sweetened condensed milk may be
Options- A. gas formation by sucrose fermenting yeasts
- B. thickening caused by micrococci
- C. mold colonies growing on the surface
- D. all of the above Discuss
Correct Answer: all of the above
- 5. Fishiness in butter is caused by
Options- A. Aeromonas hydrophila
- B. Pseudomonas synxantha
- C. Pseudomonas syncyanea
- D. none of these Discuss
Correct Answer: Aeromonas hydrophila
- 6. A brown color in milk may result from
Options- A. Pseudomonas putrefaciens
- B. the enzymatic oxidation of tyrosine by P. fluorescens
- C. both (a) and (b)
- D. S. marcescens Discuss
Correct Answer: both (a) and (b)
- 7. Acidophilus milk which is used for its therapeutic properties in intestinal disorders requires for its manufacture a pure culture of
Options- A. Lactobacillus bulgaricus
- B. Streptococcus thermophilics
- C. Lactobacillus acidophilus
- D. None of the above Discuss
Correct Answer: Lactobacillus acidophilus
- 8. Esters like flavors in butter are resulted from the action of
Options- A. P. mephitica
- B. Aeromonas hydrophila
- C. P. fragi
- D. Pseudomonas synxantha Discuss
Correct Answer: P. fragi
- 9. Certain strains of Streptococcus lactis var. maltigenes may produce
Options- A. bitter flavor
- B. acid flavor
- C. burnt or caramel flavor
- D. none of these Discuss
Correct Answer: burnt or caramel flavor
- 10. Swelling of the can is caused primarily by
Options- A. gas forming, anaerobic spore formers
- B. gas forming, aerobic spore formers
- C. both (a) and (b)
- D. none of these Discuss
Correct Answer: gas forming, anaerobic spore formers
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