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Q#1 GATE CH 2016 MCQ +2 marks -0.66 marks

A jacketed stirred tank with a provision for heat removal is used to mix sulphuric acid and water in a steady state flow process. H2SO4 (l) enters at a rate of 4 kg/h at 25oC and H2O (l) enters at a rate of 6 kg/h at 10oC. The following data are available:

Specific heat capacity of water = 4.2 kJ kg‒1K‒1.

Specific heat capacity of aqueous solution of 40 mass% H2SO4 = 2.8 kJ (kg solution)‒1 K‒1.

Assume the specific heat capacities to be independent of temperature.

Based on reference states of H2SO4 (l) and H2O (l) at 25oC, the heat of mixing for aqueous solution of 40 mass% H2SO4 = ‒ 650 kJ (kg H2SO4)‒1 . If the mixed stream leaves at 40oC, what is the rate of heat removal (in kJ/h)?

1802

2558

5702

6458

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Heat Transfer 26 0 0
Chemical Technology 17 0 0
Mechanical Operations 12 0 0
Mass Transfer 42 0 0
Instrumentation and Process Control 26 0 0
Fluid Mechanics 24 0 0
Engineering Mathematics 41 0 0
General Aptitude 60 0 0
Chemical Reaction Engineering 26 0 0
Process Calculation 9 0 0
Plant Design Economics 10 0 0
Thermodynamics 24 0 0
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