Life Sciences
2022 · Paper 1
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Complete GATE XL 2022 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 121–122 of 122. Imported answers require review unless explicitly marked reviewed.
Question 121
Open questionXL-UNAT2 marksNeeds review
In a dairy processing plant, milk enters a 30 m long and 2 cm diameter tube at 60 °C and leaves at 57 °C. The total heat loss over the tube length is 381.15 W. The specific heat capacity, density, and viscosity of milk are 3.85 kJ kg⁻¹ K⁻¹, 1020 kg m⁻³, and 1.20 cP, respectively. The Reynolds number for the flow is _____ (round off to the nearest integer).
Given:
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Open questionXL-UNAT2 marksNeeds review
The dry bulb temperature and relative humidity of air inside a storage chamber are 37 °C and 50%, respectively. The saturation pressure of water vapor at 37 °C and barometric pressure are 6.28 kPa and 101.32 kPa, respectively. The humidity ratio of air inside the chamber is _____ kg water (kg dry air)⁻¹ (round off to three decimal places).
Given: Molecular weight of water vapor and dry air are 18.02 g mol⁻¹ and 28.97 g mol⁻¹, respectively.
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