List of top Food Technology Questions on Mass and Energy Balances Including Multiphase asked in GATE XL

Which of the following statements is/are true?
Match the plant products in Group 1 with the plant species in Group 2 that produce them and the respective plant parts in Group 3 where they accumulate the most.
Group 1Group 2
(P) Net primary productivity (i) Total amount of produced by autotrophs energy
(Q) Gross primary productivity(ii) A type of mutualism where one species is  benefitted more than the other
(R) Net productivity(iii)Amount of energy stored by autotrophs after respiration 
(S) Secondary productivity(iv) Unused amount of energy after consumption by heterotrophs
Which among the following expression(s) is/are correct?
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).
The dry bulb temperature and relative humidity of air inside a storage chamber are 37 °C and 50%, respectively. The saturation pressure of water vapour 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 vapour and dry air are 18.02 g mol⁻¹ and 28.97 g mol⁻¹, respectively.
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).