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Chemical Engineering (ChE) Board Exam 2027 Reviewer & Mock Exam Questions: Free Test

Mariano Luiz King

Mariano Luiz King · PrepPH Founder

Free Chemical Engineering (ChE) Board Exam reviewer with mock questions from across its 3 subjects. Try the free sample questions below and read the full explanation for each. No sign-up needed.

Free Chemical Engineering (ChE) Board Exam reviewer: mock questions

Questions from across the subtests, picked from core topics. Pick an answer to see whether you got it right, along with the full explanation.

  1. Question 1
    Physical and Chemical Principles

    Find the pH of a solution with [H+] = 1×10⁻³ M.

    Not quite. The answer is: 3

    pH=−log⁡(10−3)=3pH = -\log(10^{-3}) = 3.

  2. Question 2
    Physical and Chemical Principles

    25 mL of 0.1 M HCl is titrated with 0.2 M NaOH. Find the volume of NaOH needed to reach the equivalence point.

    Not quite. The answer is: 12.5 mL

    MaVa=MbVb⇒(0.1)(25)=(0.2)(Vb)⇒Vb=12.5M_aV_a = M_bV_b \Rightarrow (0.1)(25) = (0.2)(V_b) \Rightarrow V_b = 12.5 mL.

  3. Question 3
    Chemical Engineering

    A stream of 100 kg/h is 40% A and 60% B by mass. Find the mass flow rate of A.

    Not quite. The answer is: 40 kg/h

    0.40×100=400.40 \times 100 = 40 kg/h.

  4. Question 4
    Chemical Engineering

    Find ΔG for a reaction with ΔH=-50 kJ/mol, ΔS=-100 J/mol·K, at T=298 K.

    Not quite. The answer is: -20.2 kJ/mol

    ΔG=ΔH−TΔS=−50,000−298(−100)=−20,200\Delta G = \Delta H - T\Delta S = -50{,}000 - 298(-100) = -20{,}200 J/mol =−20.2= -20.2 kJ/mol (spontaneous, since ΔH dominates despite unfavorable entropy).

  5. Question 5
    Chemical Engineering

    Find the Reynolds number for water (ρ=1000 kg/m³, μ=0.001 Pa·s) flowing at 2 m/s through a 0.05 m pipe.

    Not quite. The answer is: Re=100,000 (turbulent)

    Re=ρvDμ=1000(2)(0.05)0.001=100,000Re = \frac{\rho v D}{\mu} = \frac{1000(2)(0.05)}{0.001} = 100{,}000 (turbulent).

  6. Question 6
    General Engineering, Ethics and Contracts

    A steel rod has yield strength 250 MPa and experiences a working stress of 180 MPa. Find the factor of safety against yielding.

    Not quite. The answer is: 1.39

    FS=250/180=1.39FS = 250/180 = 1.39.

  7. Question 7
    General Engineering, Ethics and Contracts

    Find the present worth of ₱30,000 due in 4 years at 6% compounded annually.

    Not quite. The answer is: ≈₱23,762

    PW=30000(1.06)4=300001.2625≈₱23,762PW = \dfrac{30000}{(1.06)^4} = \dfrac{30000}{1.2625} \approx ₱23{,}762.

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Chemical Engineering (ChE) Board Exam reviewer FAQ

What subjects are on the Chemical Engineering (ChE) Board Exam?

The Chemical Engineering (ChE) Board Exam covers 3 subjects: Physical and Chemical Principles, Chemical Engineering, and General Engineering, Ethics and Contracts. Each subject has its own weight in your overall result.

How are the Chemical Engineering (ChE) Board Exam subjects weighted?

Using the PRC weighting, Chemical Engineering carries the largest share at 40%. The full breakdown is Physical and Chemical Principles (30%), Chemical Engineering (40%), and General Engineering, Ethics and Contracts (30%).

How should I prioritize my Chemical Engineering (ChE) Board Exam review?

Start with the heaviest subject, Chemical Engineering, but don't ignore the others, since every subject counts toward your result. Practice with questions that explain the answer so you learn the reasoning, and track which topics you keep missing.

Where can I find the official Chemical Engineering (ChE) Board Exam schedule and requirements?

Check the Professional Regulation Commission (PRC) website at prc.gov.ph and your Board’s announcements. Schedules, requirements, and rules can change, so confirm the details there before you apply.

Do laws and regulations change on the Chemical Engineering (ChE) Board Exam?

They can. Some topics, such as laws, codes, and rates, get amended over time, so check them against the latest official issuances before the exam instead of relying on any single reviewer, including this one.

Can I practice Chemical Engineering (ChE) Board Exam questions for free on prepPH?

Yes. The sample questions on this page are free to try without an account. prepPH also has a free plan, and a Premium plan that unlocks unlimited flashcards and weak-topic breakdowns.

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