Chemical Engineering
2018 · Paper 1
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Complete GATE CH 2018 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 49–51 of 65. Imported answers require review unless explicitly marked reviewed.
Question 39
Open questionCHNAT2 marksNeeds review
A CSTR and a PFR of equal volume are connected in series as shown below to carry out a first-order, isothermal, liquid phase reaction
The rate constant is 0.2 s⁻¹. The space-time is 5 s for both the reactors. The overall fractional conversion of A is ____________ (rounded off to third decimal place).
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Open questionCHNAT2 marksNeeds review
The elementary second-order liquid phase reaction A + B → C + D is carried out in an isothermal plug flow reactor of 2 m³ volume. The inlet volumetric flow rate is 10 m³/h. The initial concentrations of both A and B are 2 kmol/m³. The rate constant is given as 2.5 m³ kmol⁻¹ h⁻¹. The percentage conversion of A is __________.
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Open questionCHNAT2 marksNeeds review
It is decided to extract A from a feed containing 20 mol% A and 80 mol% B in two ideal cross-current stages as shown below, using equal amount of pure solvent C in each stage.
Components B and C are immiscible. 60% of A in the feed is extracted in Stage 1. The equilibrium relation is given by
where,
= moles of B per mole of A in raffinate
= moles of A per mole of C in extract in equilibrium with raffinateThe mol % of A in raffinate from Stage 2 is __________ (rounded off to second decimal place).
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