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Biotechnology and Biomedical Engineering
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Biochemistry Virtual Lab I
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Detection of Adulteration in Milk
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Detection of Adulteration in Milk
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Theory
Procedure
Self Evaluation
Animation
Simulator
Assignment
Reference
Feedback
1)
The reaction between methylene blue and microorganism present in milk is:
Oxidation
Reduction
Dehydrogenation
None of the above
2)
The presence of salicylic acid is indicated by the formation of
Blue color
Violet ring at the junction
Violet color
Pink color
3)
Why does the color change to pink when phenolphthalein indicator is added to milk?
Milk is adulterated with table sugar
Milk is adulterated with Soap
Milk is adulterated with benzoic acid
Milk is adulterated with starch
4)
What does it indicate when color of the milk is changed from blue to white immediately after incubation?
Presence of large counts of bacteria in milk
Absence of bacteria in milk
Presence of bacteria in milk
Presence of starch in milk
5)
Milk is adulterated with acid for:
To preserve the milk for longer period of time
To increase the solid content of milk
To increase the foaming of milk
None of the above
6)
Lactometer reading of milk can be increased by adding:
Table sugar
Ammonium Sulphate
Starch
Both a and
7)
Presence of microorganism in milk indicates:
High acidity of milk
Improper pasteurization
High sugar content of milk
All the above
8)
The sugar present in milk is:
Sucrose
Lactose
Glucose
Fructose
9)
Presence of salicylic acid in the milk:
Prevent contamination of milk
Conserve the acidity of milk
All the above
Increases the shelf life of milk
10)
While doing the test for ammonium sulphate, a student observed the development of pink color in the milk. What can you infer from this result?
Presence of Ammonium Sulphate
Absence of Ammonium Sulphate
Cite this Simulator:
vlab.amrita.edu,. (2011). Detection of Adulteration in Milk. Retrieved 22 March 2025, from vlab.amrita.edu/?sub=3&brch=63&sim=1091&cnt=3
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