List of top Dairy Science Questions

Which of the following characteristics of a plasmid is not true?
(A). Loss of plasmids can lead to the death of bacterial cells.
(B). Plasmids can code for important characteristics such as antimicrobial resistance.
(C). Plasmids are extrachromosomal DNA.
(D). Plasmids cannot move from one bacterial cell to another.
Choose the correct answer from the options given below:

Given below are two statements:
Statement (I): The presence of antibiotics in milk can deactivate the starter culture activity.
Statement (II): However, there is no effect of detergents in milk on starter culture activity.
In light of the above statements, choose the most appropriate answer from the options given below.

Match the characteristics (List-I) with its source microorganisms (List-II).
List-I:
(A). Rancidity
(B). Faecal source
(C). Enterotoxin
(D). Mycotoxin
List-II:
(I). Staphylococcus aureus
(II). Aspergillus flavus
(III). Coliforms
(IV). Pseudomonas fragi
Choose the correct answer from the options given below:

Given below are two statements:
Statement (I): Paneer is a lactic acid-fermented, coagulated milk product.
Statement (II): Paneer do not require storage at refrigeration temperature.
In light of the above statements, choose the most appropriate answer from the options given below.

Which among the following statements are true?
(A). Probiotics should be acid tolerant.
(B). Probiotics should be safe and non-pathogenic.
(C). All probiotic strains are Gram-positive.
(D). Probiotic strains should have strong adhesion capacity in the gastro-intestinal tract.
Choose the correct answer from the options given below:

The alcohol in Kefir is produced by _______________________

Which starter culture types among the following are usually resistant to bacteriophage attack?
(A). Single strain starters
(B). Multipile strain starters
(C). Mixed strain starters
(D). Artisanal Starters
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) : The micro-environment of butter is relatively unfavourable for the growth of microorganisms.
Reason (R) : Butter contains high fat and low moisture content.
In light of the above statements, choose the correct answer from the options given below.

Yakult is a probiotic drink originally from ________________ country.

Match List-I with List-II. Select the name of bacteria with the dairy product in which it is commonly found.
List-I (Bacteria name):
(A). Staphylococcus aureus
(B). Cronobacter sakazakii
(C). Yeast and Mold
(D). Lactococcus lactis
List-II (Products):
(I). Dahi
(II). Butter
(III). Infant milk food
(IV). Khoa based product
Choose the correct answer from the options given below:

Which among the following are homofermentative lactic acid bacteria?
(A). Lactobacillus acidophilus
(B). Lactococcus lactis
(C). Leuconostoc mesenteroides
(D). Enterococcus faecalis
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): Probiotics are beneficial microorganisms.
Reason (R): All Lactobacillus strains are probiotics.
In light of the above statements, choose the correct answer from the options given below.

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.

The Natural Process by which genes can be exchanged between bacterial population is
(A). Conjugation
(B). Transduction
(C). Transformation
(D). Protoplast fusion
Choose the correct answer from the options given below:

Which of the following bacterial pathogens are associated with the consumption of ice cream?
(A). Bacillus cereus
(B). Salmonella
(C). Listeria monocytogenes
(D). Lactobacillus planterum
Choose the correct answer from the options given below:

What is the reason behind the faster spoilage of underworked butter?

Which of the following charecteristics colonies of Salmonella species will be appeared on Xylose Lysine Deoxycholate agar?

Given below are two statements:
Statement (I): Boiling of Milk kills the vegetative forms of all organisms including spores
Statement (II): Heat stable enterotoxins of Staphylococcus aureus can not survive under boiling conditions
In light of the above statements, choose the most appropriate 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): ISO 22000: 2018 is a Food Safety management System applicable to all food industry
Reason (R): ISO 22000: 2018 is combination of ISO 9001 and HACCP system
In light of the above statements, choose the correct answer from the options given below.

What is the common source of bacteriophages in dairy industry?

Which of the following bacteria is known to be an indicator of Personnel hygiene?