Home › Previous year questions › GATE 2020 AG › Question 33GATE 2020 AG – Question 33 Agricultural Process Engineering · Evaporation and Drying · 1 mark · Numerical answer
Tomato juice with 6 wt% solids enters a single-effect evaporator at 500 kg/h and is concentrated to 36 wt% solids. Find water-removal rate in kg/h (one decimal).
Practise this question in The GATE Grind →
Show answer and explanation Correct answer: 416.0 to 418.0
Explanation Solids are conserved: 500×0.06=0.36P, so concentrate P=83.333 kg/h. The evaporated water is feed minus concentrate=500−83.333=416.667 kg/h, or 416.7.
More Evaporation and Drying questions GATE 2020 AG Q61 – Air at30°C DBT and40% RH is heated to65°C DBT,30°C WBT and used for constant-rate drying.… GATE 2026 AG Q45 – A single-effect evaporator concentrates orange juice so product solids concentration/feed… GATE 2026 AG Q46 – At 60°C dry-bulb temperature, saturated water-vapor pressure is 20 kPa and relative… GATE 2025 AG Q32 – Apple slices dry in the falling-rate period from 65% to 10% dry-basis moisture.… GATE 2024 AG Q24 – Which mechanisms explain the falling-rate drying period? Select all that apply. GATE 2024 AG Q35 – A single-effect evaporator concentrates9090 kg/hour herbal extract from 12% to 20% solids.… All Evaporation and Drying questions →