GATE XE year:2022 PYQs & Answers — Page 14

Questions 131–140 of 175. Imported answers require independent review unless marked reviewed.

Topic practice 175 questionsPage 14 of 18

The enthalpy of fusion for a polymer is found to decrease from 135.6 J g

to 120 J g

after five years of use. If the enthalpy of fusion of the same polymer with 100% crystallinity is 290 J g

, then the loss in crystallinity after five years is ______ % (rounded off to one decimal place).

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Which among the given options truly depict the lines 1 and 2 in the figure below with respect to the effect of heat processing on food?

Diagram for Engineering Sciences question 132

Your answerChoose one option.

1-Safety, 2-Quality

1-Yield, 2-Safety

1-Yield, 2-Quality

1-Quality, 2-Safety

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Homogenization of milk leads to disintegration of fat globules by

Your answerChoose one option.

Turbulence and pasteurization

Pasteurization and cavitation

Pasteurization and pressurization

Turbulence and cavitation

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The lowest water activity (a

) supporting the growth of Staphylococcus aureus in food under aerobic condition is

Your answerChoose one option.

0.98

0.91

0.89

0.86

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Cultures used in industrial production of yogurt are

Your answerSelect all correct options. You can choose more than one.

Lactococcus lactis subsp. lactis

Streptococcus thermophilus

Leuconostoc mesenteroides subsp. cremoris

Lactobacillus delbrueckii subsp. bulgaricus

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In a dairy plant, spray drying technology is used to produce whey powder. The rate of spray drying depends on

Your answerSelect all correct options. You can choose more than one.

Temperature of the incoming air

Shape of the cyclone separator

Diameter of the whey droplet

Heat transfer coefficient of hot air

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The parboiling of paddy results into

Your answerSelect all correct options. You can choose more than one.

Increase in the milling losses

Increase in the nutritional value of rice

Increase in the head rice recovery

Increase in the broken rice percentage

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One hundred kg paddy is dried from 18% wet basis to 13% wet basis moisture content. The amount of water removed (in kg) from the paddy is ________ (round off to one decimal place).

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The radius of a centrifuge bowl is 0.1 m and is rotating at 850 revolutions per minute. The centrifugal force developed in terms of gravity force (g-force) is ________ (round off to two decimal places).

Given: Acceleration of gravity (g) = 9.81 m s

and π = 3.14

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In a canning industry, the total process time (F

) was calculated as 3 min. If each can contains 20 spores having decimal reduction time of 1.6 min, the probability of spoilage would be ______ in 100 cans (round off to the nearest integer).

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GATE XE year:2022 PYQs

Question 131

Question 132

Question 133

Question 134

Question 135

Question 136

Question 137

Question 138

Question 139

Question 140