Lab - Milk Analysis Flashcards
0
Q
Proportion of fat in a liquid sample of milk may be measured using this method A. Soxhlet B. Babcock C. Roese Gootlieb D. B and C
A
A
1
Q
Proportion of fat in a dried sample of milk may be measured using this method A. Soxhlet B. Babcock C. Roese Gootlieb D. B and C
A
A
2
Q
False about Babcock Method
A. milk and HCl are mixed in flask with narrow graduated neck
B. fats kept liquid by heat generated and addition of hot water
C. fat content based on volume of fat column
D. All are true
A
A
H2SO4 dapat
3
Q
Residue remainibg after a foodstuff is ignited until it is carbon free
A
Ash
4
Q
What does the ash content represent? A. Total amount of moisture in the food B. Total amount of vitamins in the food C. Total amount of minerals in the food D. None of the above
A
C
5
Q
Which is used for titration method of determining calcium in ashed sample?
A. EDTA
B. KMnO4
C. A and B
A
C
6
Q
Which is used for colorimetric method of determining calcium in ashed sample? A. EDTA B. Glyoxal-bis C. 2-hydroxyanil D. C and B
A
D
7
Q
In which methods is the ash treated as oxalate?
A. Precipitation
B. Turbidimetric
C. Both A and B
A
C
8
Q
What method was done in quanti det of milk fat experiment?
A
Babcock’s Centrifugal Method
9
Q
In the experiment for determination of calcium in milk, the sample was titrated with \_\_\_ A. H2SO4 B. KMnO4 C. EDTA D. B and C
A
D
10
Q
What indicator was used in Exercise 10?
A
Murexide
11
Q
Murexide has \_\_\_ color in alkaline solution, but will turn \_\_ when Ca is removed A. Pink, red B. Red, pink C. Pink, purple D. Purple, pink
A
C
12
Q
Which is false? A. Human's milk has less ash. B. Human's milk has less fat and lactose. C. Cow's milk has more protein. D. Cow's milk have less water.
A
B
