GATE XE topic:engineering PYQs & Answers — Page 105

Questions 1041–1050 of 1772. Imported answers require independent review unless marked reviewed.

Which of the followings are correct pair of GRAS chemical food preservative, affected organism and given food matrix?

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

Sodium lactate-Bacteria-Pre-cooked meats

Capylic acid-Insects-Cheese wraps

Dehydroacetic acid-Molds-Squash

Sodium nitrite-Clostridia-Meat curing preparations

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Choose the correct pair of pigment and their corresponding color in given plant product.

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Carotene - Yellow-orange-Pepers

Betanin – Purple/red-Catus pear

Lycopene – Red-Red beets

Flavolans – Orange-Cauliflower

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Which of the following compounds act as anti-nutritional factors?

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Phytate

Isoflavones

Typsin Inhibitor

Resveratrol

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Which of the followings is/are commonly used medium/media in the supercritical fluid extraction of spices and tea?

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Water

Carbon dioxide

Dichloromethane

Carbon dioxide with Ethanol

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Which of the following expressions represent the Reynolds number of a fluid flowing through a uniform circular cross section pipe?

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(density of the fluid) × (average velocity of the fluid) × (internal diameter of the pipe) / (dynamic viscosity of the fluid)

(average velocity of the fluid) × (internal diameter of the pipe) / (kinematic viscosity of the fluid)

(dynamic viscosity of the fluid) / [(average velocity of the fluid) × (density of the fluid) × (internal diameter of the pipe)]

(kinematic viscosity of the fluid) / [(average velocity of the fluid) × (internal diameter of the pipe)]

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Which of the following combinations of analytical equipment, property measured and food property are correct?

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Particle size analyzer - particle size distribution - span value

Texture profile analyzer - morphology - chewiness

Differential scanning calorimeter - glass transition temperature - degree of cakeing

Capillary viscometer - viscosity - sensory

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Choose the correct pair(s) of Governing Law and corresponding application(s)

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Hagen Poiseuille law - Pressure drop

Rittinger’s law - Vapor pressure

Stefan Boltzmann law - Radiation heat transfer

Raoult’s law - Size reduction

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An orange juice sample is concentrated from 10% to 40% (by weight) total soluble solids in a single effect evaporator with a feed rate of 3600 kg hr−1 at 25°C. The evaporator operates at sufficient vacuum to allow the product moisture to evaporate at 55°C. The specific heat of both feed and concentrated juice is 4.0 kJ kg−1 °C−1. If enthalpy of water vapour at 55°C is 2600 kJ kg−1, heat transfer rate through the heating surface area of the evaporator in kilowatt (in integer) will be _____.

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Dry air is fed into a tray dryer. The percentage relative humidity of the air leaving the dryer is 60% at 70°C and 101.35 kPa. If, saturated vapour pressure of water at 70°C is 31.2 kPa, humidity of the air leaving the dryer in kg water per kg dry air (round off to 3 decimal places) will be _____. (Given: Molecular weight of water and air are 18.02 g mol−1 and 28.97 g mol−1 respectively)

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In a cold storage plant, 5000 kg potato having a constant specific heat capacity of 3.65 kJ kg−1 °C−1 are cooled from 28 °C to 2 °C in 24 hours. The heat of respiration of potato per 24 hours is 3.12 kJ kg−1 during the storage. Assuming the efficiency of the storage plant to be 70%, the capacity of the plant in ton of refrigeration (round off to 2 decimal places) is _____. (Given: 1 ton of refrigeration = 3.517 kilowatt)

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GATE XE topic:engineering PYQs

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

Question 22