Q1. …… Stains Are Used In Negative Staining?

A} Acid Stain
B} Basic Stain
C} Neutral
D} None Of The Above

ANSWER – A} Acid

• The Negative Staining Method Is Useful For Determining Cell Size And Arrangement And The Morphology Of Bacteria. Eg: Nigrosin(Acidic Stain). This Means That The Stain Readily Gives Up A Hydrogen Ion And Becomes Negatively Charged. Because The Surface Of Most Bacterial Cells Is Negatively Charged.

READ MORE – Food Science & Technology (11-12-2021)

Q2. Holding Time In HTST Pasteurization Can Be Determined By?

A} Dye Injection Method
B} Direction Test
C} Colorimetric Method
D} Daniel-Listner Method

ANSWER – A} Dye Injection Method

• Working With Water In Turbulent Flow, Injected Tracers Of Salt, Dye, And Bacteria In Holding Tubes. Measurements By The Three Methods. This Indicates That The Saline Tracer Is An Adequate Method For Measuring Residence Times Of Bacteria In Turbulent Flow Through The Holding Tubes Of HTST Pasteurization.

READ MORE – Food Science & Technology Quiz (03-01-2021)

Q3. Maximum Residual Limited Recommended By FDA For Aflatoxin M1 In Milk Is?

A} 0.5 Microgram/Kg
B} 1.2 Microgram/Kg
C} 2.25 Microgram/Kg
D} 5 Microgram/Kg

ANSWER – A} 0.5 Microgram/Kg

• Aflatoxin Are Generally Produced By Aspergillus Species, And The Particular Limit Prescribed By Food And Drug Administration (FDA) For Different Products Which Include Milk, Generally Milk Container Aflatoxin M1 And M2 And The Maximum Permissible Amount Is 0.5 Microgram/Litre And In Infant Formula It Is 0.25 Microgram/Litre.

READ MORE – Food Science & Technology Quiz (29-12-2021)

Q4. The Term Three Quarterful Or Full Three Quarter Is Used To Denote Fruit Maturity Of?

A} Apple
B} Fig
C} Banana
D} Coconut

ANSWER – C} Banana

• Normally Banana Takes 99-107 Days To Reach Three-Quarters Full Maturity.

READ MORE – Food Science & Technology Quiz (25-12-2021)

Q5. Cordial Have A TSS Of….°Brix?

A} 30
B} 20
C} 45
D} 68

ANSWER – A} 30

• Cordial also known as squash, is a non-alcoholic concentrated syrup made from fruit, elderflower, or ginger. Cordial Have A TSS Of 30°Brix And Fruit Content Of 25 %.

READ MORE – Food Science & Technology Quiz (10-01-2022)