List of top Dairy Science Questions on Dairy Analysis

Given below are two statements:
Statement (I): Catalase test is used to test the purity of dairy starters.
Statement (II): Catalase is an enzyme found in anaerobic bacteria only.
In light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements:
Statement (I): The time-temperature combination of pasteurization that kills Coxiella burnetii typically involves heating milk to at least 63°C (145°F) for at least 30 minutes, or heating it to 72°C (161.6°F) for at least 15 seconds.
Statement (II): The time-temperature combination of pasteurization that can make the alkaline phosphatase test positive in pasteurized milk.
In light of the above statements, choose the most appropriate answer from the options given below.

Which of the following processes that are used in the production of safe and commercially sterile milk and milk products?
(A). Pasteurization,
(B). UHT sterilization
(C). Aseptic processing
(D). Thermization
Choose the correct answer from the options given below:

The water activity value for Skim Milk Powder is approximately:

Average fat globule size in cow milk

Nessler's reagent is prepared by mixing?

Which property of milk can be determined with Stalagmometer ?

Given below are two statements:
Statement (I): The Delvotest- SP is used for detection of Streptomycin and penicillin residues in milk.
Statement (II): The Delvotest\textregistered is used for the detection of penicillin residues in milk.

Given below are two statements:
Statement (I): Formalin is used for preservation of milk samples meant for chemical analysis.
Statement (II): Mercuric chloride is used as preservative for milk samples meant for cryoscopic analysis (test for freezing point depression).
In light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements:
Statement (I): Scarlet fever is caused by Streptococcus pyogenes
Statement (II): Dick test is used for screening susceptible individuals to scarlet fever.
In light of the above statements, choose the most appropriate answer from the options given below.

Silver nitrate and Potassium chromate solutions are reagents used in the test meant for .............................

Which of the following milk constituents scatter/reflect light for milk to appear whitish?
(A) Fat
(B) Lactose
(C) Casein
(D) Whey proteins
Choose the correct answer from the options given below:

Match the enzymes in milk from List-I with their association in List-II and select correct series from the options.
\begin{tabular{ll} List-I (Enzyme) & List-II (Association)
A. Lipoprotein lipase & 1. Mastitis indicator
B. Lactoperoxidase & 2. Age gelation in UHT milk
C. Catalase & 3. Homologous with alpha lactalbumin
D. Plasmin & 4. Indicator of HTST pasteurisation
E. Lysozyme & 5. Rancid flavour
F. Alkaline phosphatase & 6. Bactericidal activity

Choose the correct answer from the options given below:

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : In titratable acidity determination of milk by titration method, the pink colour (phenolphthalein end point) disappears soon, whereas in normal acid-base titration, it persists for long time.
Reason (R) : Due to alkalinity of the medium after the titration, there is a shift in the equilibrium of milk salts releasing more of hydrogen ions.
In light of the above statements, choose the correct answer from the options given below.

In Mohr's method of salt estimation of table butter, the type of titration employed is

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Care should be taken to test only fresh samples of milk for freezing point depression, as aged samples can actually depress the freezing point such that the presence of extraneous water could be masked.
Reason (R) : The production of four molecules of lactic acid from one molecule of lactose during storage of milk increases freezing point depression.
In light of the above statements, choose the correct answer from the options given below.

Mixed indicator used in the titration of the distillate in MicroKjeldahl method is made up of

The specific gravity of amyl alcohol (Grade I) at 27$^\circ$ C to be used for fat estimation of milk by Gerber method as per BIS Method is:

Which test can be used to check the purity of lactic starter cultures?

In a plating experiment of milk, 1 ml of each \(10^{-2}\) and \(10^{-3}\) dilutions were plated out in duplicate. The volume of the actual milk sample used in the experiments is

In Eijkmans test, inoculum from positive PCT tubes is transferred to MacConkey's broth tubes and incubated at ________.

Which of the following is a non-leucoform dye used in the rapid test utilizing starter cultures for the detection of antibiotic residues in milk?

Barritts reagent is used in ________.