Use a 100 kg wet basis: water=72 kg and dry solids=28 kg. Dry-basis moisture is water divided by dry solids, $72/28\times100=257.1429\%$, giving **257.1%**. Dry-basis percentages may exceed100%.
More Evaporation and Drying questions
GATE 2022 AG Q62– Parboiled paddy dries from free moisture .40 to .02 kg water/kg dry solid. Dry solids99.8…
GATE 2022 AG Q65– A dryer recycles10 m³/s exhaust at 70°C,30% RH, humidity ratio .06335 kg/kg dry air. It…
GATE 2021 AG Q32– Fresh potatoes1000 kg are dried from 14% to 93% total solids. Peeling loses7% of original…
GATE 2021 AG Q62– Air at 40°C, total pressure101.3 kPa, contains water vapour at 4.0 kPa. Saturation vapour…
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…