Noted. This paper is in our queue now. Check back tomorrow.
We could not record that here. Email the paper name to hirenjsca@gmail.com and we will add it.
1 of 25 questions on this paper were also asked in other years. 1 more is a type of question GTU sets again with new data. Each is marked below with the years it appeared.See all 2 repeated 3170501 questions, most asked first
Suggest suitable heterogeneous catalyst used in Petrochemical/Petroleum Refining, Polymerisation and Bulk Chemical industries.
List various solid catalyst synthesis methods and discuss generalized sol-gel method to synthesize solid nano-catalyst.
What do you mean by rate controlling step for a given reaction? Derive rate equation for gas film controlled gas-liquid non-catalytic reaction.
Spherical particles of zinc sulfide of size R = 1 mm are roasted in an 8% oxygen stream at 900°C and 1 atm. The stoichiometry of the reaction is 2ZnS + 3O2 2ZnO + 2SO2 Assuming that reaction proceeds by the shrinking-core model calculate the time needed for complete conversion of a particle and the relative resistance of ash layer diffusion during this operation. Data: Density of solid, B = 4.13 gm/cm³ = 0.0425 mol/cm³ Reaction rate constant, k" = 2 cm/sec For gases in the ZnO layer, De = 0.08 cm²/sec Note that film resistance can safely be neglected as long as a growing ash layer is present.
A solid feed consisting of 20 wt% of 1-mm particles and smaller 30 wt% of 2-mm particles 50 wt% of 4-mm particles passes through a rotating tubular reactor somewhat like a cement kiln where it reacts with gas to give a hard nonfriable solid product (SCMI reaction control, T = 4 h for 4-mm particles).
Suggest suitable contactor for a fluid-fluid reaction having bulk liquid resistance as a controlling resistance. Justify your recommendation.
With neat schematic diagram explain salient features of packed column reactor used for fluid-fluid reaction.
Gaseous A absorbs and reacts with B in liquid according to A(g) + B(l) R(l) in a packed bed under conditions where kAg*a = 0.1 mol/hr.m2 of reactor.Pa, fi = 0.01 m³ liquid/m³ reactor kAl*a = 100 m³/liquid/m³ reactor. hr DAl= DBl = 10⁻⁶ m²/hr, k = 10⁻² m³ liquid/mol.hr a = 100 m²/m³ reactor, HA = 1 Pa. m³ liquid/mol At a point in the reactor where pA = 100 Pa and CB = 100 mol/m³ liquid
Also asked in Summer 2026 Q3c
For fluid-fluid reaction, under which circumstances high fl value is desired? Justify with suitable example.
With neat schematic diagram explain salient features of tray column and agitated tank reactor used for fluid-fluid reaction.
The rate of CO2 absorption into an alkaline buffered solution of K2CO3 and KHCO3. The resulting reaction can be represented as In the experiment pure CO2 at 1 atm was bubbled into a packed column irrigated by rapidly recirculating solution kept at 20°C and close to constant CB. Find the fraction of entering CO2 absorbed. Data:Column: Vr = 0.6041 m³, fl = 0.08, a = 120 m²/m³, Gas: π = 101325 Pa, HA = 3500 Pa. m³/mol, v0 = 0.0363 m³/s Liquid: CB= 300 mol/m³, DAl= DBl= 1.4 x 10⁻⁹ m²/s, Rates: k = 0.433 m³/mol. S, kAla = 0.025 s⁻¹
Also suggest suitable techniques to measure these characteristics.
Draw schematic diagram of three different types of industrial fixed bed catalytic reactors with heat removal arrangements for different exothermic reactions.
Discuss salient features of fluidized bed reactor. Also list various industrial applications of fluidized bed reactors.
The first-order decomposition of A is run in an experimental mixed flow reactor. Find the role played by pore diffusion in these runs; in effect determine whether the runs were made under diffusion-free, strong resistance, or intermediate conditions. Reaction is A R Dp W CA0 v XA 4 1 300 60 0.8 8 3 100 160 0.6
To build a packed bed reactor filled with 1.2-cm porous catalyst particles (s = 2000kg/m³, .De = 2 x 10⁻⁶ m3/m cat.s) to treat 1 m³/s of feed gas (1/3 A, 1/3 B, 1/3 inert)at 336°C and 1 atm to 80% conversion of A. Experiments with fine catalyst particleswhich are free from diffusional resistance show thatA + B → R + S, n=2, k = 0.01 m⁶/mol.kg.sHow much catalyst must be used?Also asked in Summer 2026 Q2b
Gaseous A reacts (A R) in an experimental plug flow reactor. From the following conversion data at various conditions find a rate equation to represent the reaction, W, gm 0.5 1 2.5 CA,mol/m³ 30 20 10 Consider plug flow rate and CA0= 60 mol/m³, v = 3 liter/min
Questions repeat across sessions. Working through two or three papers shows you which topics GTU asks most.
BE Chemical
Send this paper to your class group. Every question has its own link.
Official Gujarat Technological University (GTU) examination paper for Chemical Reactions Engineering II (Summer 2025, B.E. · Chemical Engineering, Sem 7). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.
3170501 Chemical Reactions Engineering II
Official GTU PDF · Summer 2025
The PDF could not be loaded from the university's website.
Open the PDF directly