100+ Free AMIE Section B Chemical Practice Questions

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Sample AMIE Section B Chemical Practice Questions

Try these sample questions to test your AMIE Section B Chemical exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In a steady-state process with no chemical reaction, a feed stream of 500 kg/h containing 40 wt% methanol is mixed with a stream of 300 kg/h of pure water. What is the mass fraction of methanol in the combined outlet stream?

A.0.20

B.0.25

C.0.30

D.0.40

Explanation: Methanol in the feed = 0.40 x 500 = 200 kg/h. Total outlet mass = 500 + 300 = 800 kg/h. Mass fraction = 200/800 = 0.25. An overall mass balance with no reaction simply conserves each species.

2A combustion process burns methane (CH4) completely in air. For every mole of methane burned with the stoichiometric amount of oxygen, how many moles of oxygen are required?

A.1

B.1.5

C.2

D.2.5

Explanation: The stoichiometric combustion reaction is CH4 + 2 O2 -> CO2 + 2 H2O. Each mole of methane requires exactly 2 moles of oxygen for complete combustion.

3A gas mixture at 2 atm and 300 K contains 30 mol% CO2. Assuming ideal gas behaviour, what is the partial pressure of CO2 in the mixture?

A.0.30 atm

B.0.60 atm

C.0.66 atm

D.2.0 atm

Explanation: By Dalton's law, partial pressure = mole fraction x total pressure = 0.30 x 2 atm = 0.60 atm. For ideal gases the mole fraction equals the volume fraction and the pressure fraction.

4In a continuous reactor, a recycle stream is used to improve conversion. If the fresh feed is 100 mol/h and the recycle stream is 400 mol/h, what is the recycle ratio (recycle to fresh feed)?

A.0.25

B.2.5

C.4.0

D.5.0

Explanation: The recycle ratio is defined as the recycle stream flow divided by the fresh feed flow = 400/100 = 4.0. Recycle increases overall conversion by returning unreacted material to the reactor.

5A reactor achieves 80% conversion of reactant A. If 200 mol/h of A enters the reactor, how many mol/h of A remain unreacted in the outlet?

A.20

B.40

C.80

D.160

Explanation: Conversion = (moles reacted)/(moles fed). Moles reacted = 0.80 x 200 = 160 mol/h, so unreacted A = 200 - 160 = 40 mol/h.

6The standard heat of combustion of carbon to CO2 is -393.5 kJ/mol. How much heat is released when 12 kg of carbon is completely burned to CO2? (Atomic mass of C = 12)

A.393.5 kJ

B.393,500 kJ

C.4,722 kJ

D.39.35 kJ

Explanation: 12 kg of carbon = 12000 g / 12 g/mol = 1000 mol. Heat released = 1000 mol x 393.5 kJ/mol = 393,500 kJ. The negative sign indicates an exothermic reaction releasing energy.

7In a drying operation, wet solids enter at 30 wt% moisture and leave at 5 wt% moisture (wet basis). For 1000 kg/h of wet feed, approximately how much water is evaporated?

A.186 kg/h

B.250 kg/h

C.263 kg/h

D.300 kg/h

Explanation: Dry solids = 0.70 x 1000 = 700 kg/h (conserved). Product mass = 700/(1-0.05) = 736.8 kg/h. Water evaporated = 1000 - 736.8 = 263.2 kg/h. Basing on the conserved dry-solid stream is the standard drying-balance method.

8When fuel is burned with more air than the stoichiometric requirement, the additional air is termed:

A.Theoretical air

B.Excess air

C.Primary air

D.Inert air

Explanation: Excess air is the air supplied beyond the stoichiometric (theoretical) amount needed for complete combustion. It ensures complete burning but lowers flame temperature and increases stack losses.

9A stream contains 100 kmol/h of a gas at 25 degrees C. To convert this molar flow to a volumetric flow at standard conditions, the molar volume of an ideal gas at STP (0 degrees C, 1 atm) is approximately:

A.8.314 L/mol

B.22.4 L/mol

C.24.5 L/mol

D.0.0821 L/mol

Explanation: At standard temperature and pressure (0 degrees C and 1 atm), one mole of an ideal gas occupies 22.4 litres. This is a fundamental constant used in stoichiometric gas-volume conversions.

10In a process with a single feed splitting into a product and a purge stream, what is the primary purpose of the purge stream?

A.To increase the reaction rate

B.To prevent accumulation of inert or impurity species in a recycle loop

C.To raise the reactor temperature

D.To recover the catalyst

Explanation: A purge stream removes inert components and impurities that would otherwise accumulate indefinitely in a recycle loop, since they neither react nor leave in the main product. This maintains a steady-state composition.

About the AMIE Section B Chemical Exam

The AMIE Section B Chemical Engineering examination is conducted by the Institution of Engineers, Bangladesh (IEB) and represents the degree-level professional stage of the Associate Member of the Institution of Engineers (AMIE) qualification for chemical engineering candidates. It tests core chemical engineering subjects including stoichiometry and energy balances, thermodynamics, fluid mechanics and heat transfer, mass transfer, unit operations, reaction engineering, process control, plant and equipment design, engineering economics, plant safety, and process technology.

Assessment

AMIE Section B in Chemical Engineering is examined as a series of subject papers, each a 3-hour written examination worth 100 marks, covering the professional chemical engineering syllabus along with laboratory and project work assessed by the IEB.

Time Limit

3 hours (180 minutes) per subject paper

Passing Score

Minimum Grade C for exemption in each subject; an overall minimum grade point average is required to complete Section B

Exam Fee

Set per subject and per term by the IEB AMIE office; confirm current fees at enrolment (The Institution of Engineers, Bangladesh (IEB))

AMIE Section B Chemical Exam Content Outline

12%

Mass Transfer

Diffusion, distillation, absorption, extraction, drying, and transfer-unit concepts central to chemical separations.

12%

Reaction Kinetics and Reactor Design

Rate laws, the Arrhenius equation, catalysis, and the design of batch, CSTR, and plug-flow reactors.

10%

Industrial Stoichiometry

Material and energy balances, combustion, recycle and purge, and gas-law calculations for process streams.

10%

Chemical Engineering Thermodynamics

Thermodynamic laws, cycles, the phase rule, fugacity, and vapour-liquid equilibrium relationships.

10%

Fluid Mechanics and Heat Transfer

Flow regimes, Bernoulli and continuity, friction factor, conduction, convection, and heat exchanger analysis.

10%

Unit Operations

Pumps, filtration, evaporation, fluidization, crystallization, and solid-fluid separation equipment.

10%

Process Control and Instrumentation

PID control, transfer functions, stability, and instruments for pressure, flow, temperature, and level.

Process and Plant Equipment Design

Pressure vessel and heat exchanger design, reboilers, storage tanks, relief devices, and corrosion allowances.

Chemical Engineering Economics and Management

Payback, net present value, cost estimation, break-even analysis, and project scheduling.

Plant Safety, Corrosion and Materials

Flammability limits, HAZOP, corrosion mechanisms, cathodic protection, and materials selection.

Process Technology

Ammonia and urea, sulfuric acid, refining, natural gas processing, and polymer manufacture.

How to Pass the AMIE Section B Chemical Exam

What You Need to Know

Passing score: Minimum Grade C for exemption in each subject; an overall minimum grade point average is required to complete Section B
Assessment: AMIE Section B in Chemical Engineering is examined as a series of subject papers, each a 3-hour written examination worth 100 marks, covering the professional chemical engineering syllabus along with laboratory and project work assessed by the IEB.
Time limit: 3 hours (180 minutes) per subject paper
Exam fee: Set per subject and per term by the IEB AMIE office; confirm current fees at enrolment

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

AMIE Section B Chemical Study Tips from Top Performers

1Master the core calculation methods early: steady-state material and energy balances, reactor design equations for batch, CSTR, and PFR, and McCabe-Thiele distillation construction appear repeatedly in Section B papers.

2Build fluency with dimensionless groups (Reynolds, Prandtl, Nusselt, Sherwood, Schmidt) so you can quickly identify the controlling mechanism in fluid-flow, heat-transfer, and mass-transfer problems.

3Practise process-technology questions on ammonia, urea, sulfuric acid, refining, and natural gas processing, since these reflect Bangladesh's gas-based fertilizer and petrochemical industries that the IEB examinations emphasize.

Frequently Asked Questions

Who conducts the AMIE Section B Chemical Engineering examination?

The examination is conducted by the Institution of Engineers, Bangladesh (IEB). AMIE (Associate Member of the Institution of Engineers) is a professional qualification, and Section B is its degree-level professional stage for chemical engineering candidates.

How is the AMIE Section B Chemical Engineering exam structured?

Section B is examined through a series of subject papers, each a written examination of 100 marks lasting 3 hours, together with laboratory and project work. The chemical engineering syllabus covers thermodynamics, mass transfer, reaction engineering, unit operations, process control, and plant design.

What is the passing standard for AMIE Section B?

Each subject paper carries 100 marks, and candidates must achieve at least a Grade C to gain exemption in a subject. Completing Section B also requires meeting an overall minimum grade point average set by the IEB.

What subjects does the AMIE Section B Chemical Engineering syllabus cover?

The syllabus covers industrial stoichiometry and energy balances, chemical engineering thermodynamics, fluid mechanics and heat transfer, mass transfer, unit operations, reaction kinetics and reactor design, process control and instrumentation, plant and equipment design, engineering economics and management, plant safety and corrosion, and process technology.