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Building Blocks of Dairy Processing Online Exam Quiz

Important questions about Building Blocks of Dairy Processing. Building Blocks of Dairy Processing MCQ questions with answers. Building Blocks of Dairy Processing exam questions and answers for students and interviews.

“R” in the below equation refers to what?

Options

A : a. Recycle

B : b. Regeneration efficiency

C : c. Regression

D : d. Reuse

Pasteurization aid in which of the following?

Options

A : a. killing tubercle bacillus

B : b. killing spores

C : c. increasing fat content

D : d. lowering temperature

Which of the following is the time-temperature combination for HTST pasteurization?

Options

A : a. 72°C to 74°C for 15 to 20 seconds

B : b. 135°C to 140°C for 2 to 4 seconds

C : c. 63°C for 30 minutes

D : d. 57°C to 68°C for 15 min

Which of the following is the time-temperature combination for LTST pasteurization?

Options

A : a. 72°C to 74°C for 15 to 20 seconds

B : b. 135°C to 140°C for 2 to 4 seconds

C : c. 63°C for 30 minutes

D : d. 57°C to 68°C for 15 min

Which of the following is the time-temperature combination for UHT pasteurization?

Options

A : a. 72°C to 74°C for 15 to 20 seconds

B : b. 135°C to 140°C for 2 to 4 seconds

C : c. 63°C for 30 minutes

D : d. 57°C to 68°C for 15 min

Which of the following is the time-temperature combination for Thermization?

Options

A : a. 72°C to 74°C for 15 to 20 seconds

B : b. 135°C to 140°C for 2 to 4 seconds

C : c. 63°C for 30 minutes

D : d. 57°C to 68°C for 15 min

Which of the following is the time-temperature combination for Sterilization?

Options

A : a. 72°C to 74°C for 15 to 20 seconds

B : b. 135°C to 140°C for 2 to 4 seconds

C : c. 63°C for 30 minutes

D : d. 115 – 120°C for some 20 – 30 minutes

“Heat transferred from the bowl of the spoon to the handle” is an example of which of the following way of heat transfer?

Options

A : a. Conduction

B : b. Convection

C : c. Radiation

D : d. Filtration

“The spoon is rinsed in running cold water. Heat gets absorbed by the water and the spoon gets cooler, until the spoon and the water are at the same temperature” is an example of which of the following way of heat transfer?

Options

A : a. Conduction

B : b. Convection

C : c. Radiation

D : d. Filtration

“A roof accumulates solar heat during the day and radiates the heat at night” is an example of which of the following way of heat transfer?

Options

A : a. Conduction

B : b. Convection

C : c. Radiation

D : d. Filtration

Which of the following is the application of direct heating in the dairy industry?

Options

A : a. Heating curd in the manufacture of cheese

B : b. Solar heating

C : c. Heating with gamma rays

D : d. Oxidation

Heat exchanger works on which of the following principle?

Options

A : a. Direct heating

B : b. Indirect heating

C : c. Slow heating

D : d. Fast heating

If the product flow rate in a plant is to be increased from 10,000 l/h to 20,000 l/h, the heat exchanger must be extended to_______ the original size, provided the flow rates of the service media are also doubled, other factors being constant.

Options

A : a. Double

B : b. Triple

C : c. Same

D : d. Quadruple

Calculate temperature change: 20,000 l/h cheese milk (V1) is to be heated from 4°C to 34°C by 30,000 l/h hot water (V2) at 50°C. Density (r) and specific heat (cp) for milk are about 1020 kg/m³ and 3.95 kJ/kg, K and for water 990 (at 50°C) and 4.18.

Options

A : a. 20.5?

B : b. 21.5?

C : c. 18.8?

D : d. 19.5?

The temperature difference between the two liquids is best utilized if they flow in opposite directions through the heat exchanger. This type of flow is called ________

Options

A : a. Countercurrent

B : b. Concurrent

C : c. Rapid flow

D : d. Slow flow

______________ tells how much heat passes through 1 m² of the partition per 1°C of differential temperature.

Options

A : a. Friction coefficient

B : b. Temperature coefficient

C : c. Overall heat transfer coefficient

D : d. Time coefficient

Which among the following surface promote heat transfer?

Options

A : a. Plain

B : b. Shiny

C : c. Corrugated

D : d. Wet

_______ Heat exchanger is needed for cream than for milk, if capacities and temperature programs are identical.

Options

A : a. Larger

B : b. Smaller

C : c. Similar

D : d. Stagnant

Which of the following material is used for heat transfer in the dairy industry?

Options

A : a. Iron

B : b. Platinum

C : c. Copper

D : d. Stainless steel

The rate of buildup of fouling does not depend on which of the following?

Options

A : a. Milk quality and Air content of the product

B : b. Temperature difference between product and heating medium

C : c. Pressure conditions in the heating section

D : d. Thickness of stainless steel

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