Free Chemical Process Principles MCQs with Answers
2,710 Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Last updated
2,710 questions · page 1 of 136
- A. Organic rock
- B. Chemical rock
- C. All of the above
- D. Clastic rock
Explanation: Sedimentary rocks are classified as clastic, chemical, or organic according to whether they form from fragments, chemical precipitation…
Correct answer: All of the above- A. None of these
- B. Igneous rock
- C. Metamorphic rock
- D. Sedimentary rock
Explanation: Sedimentary rocks commonly preserve buried organic matter and provide the source and reservoir settings associated with petroleum.
Correct answer: Sedimentary rock- A. Dogleg severity
- B. Drill line system
- C. Drill line stream
- D. All of Above
Explanation: DLS means dogleg severity, the rate of change in a wellbore’s direction, usually expressed per unit length.
Correct answer: Dogleg severity- A. Rip in hole
- B. Run in hole
- C. Rest in hole
- D. None of these
Explanation: RIH means run in hole, describing the operation of lowering a drillstring, tool, or other equipment into the well.
Correct answer: Run in hole- A. Paraffins
- B. Aliphatic compounds
- C. Aromatic compounds
- D. Olefins
Explanation: High-temperature carbonization of coal produces coal tar rich in benzene, toluene, naphthalene, phenols, and other aromatic compounds.
Correct answer: Aromatic compounds- A. Coke Oven Gas
- B. Sulphide Coke
- C. Tar
- D. Pulverised coke
Explanation: Coke-oven gas contains hydrogen and hydrocarbons that produce substantial water vapour on combustion, which can appear as a white…
Correct answer: Coke Oven Gas- A. refined copper
- B. impure copper
- C. processed copper
- D. none of these
Explanation: Blister copper is the impure copper obtained after converting copper sulfide matte, typically containing about 98 to 99.5% copper along…
Correct answer: impure copper- A. 3 kmole/hr
- B. 4 kmole/hr
- C. 5 kmole/hr
- D. 6 kmole/hr
Explanation: An impurity balance gives 0.01F = 0.15P, so F = 15P. The n-butane balance, 0.99F = 70 + 0.85P, then gives 14P = 70 and P = 5 kmol/h.
Correct answer: 5 kmole/hr- A. 20
- B. 32.2
- C. 45.35
- D. 58.65
Explanation: The crystals contain Na2SO4 in the fraction 142/322 of their mass. A solute balance gives 30 = 0.10(100 - W) + (142/322)W, yielding W =…
Correct answer: 58.65- A. 82
- B. 164
- C. 41
- D. 8.2
Explanation: The reaction is CaO + 2HNO3 → Ca(NO3)2 + H2O. One mole of HNO3 is supplied, so it forms 0.5 mol of Ca(NO3)2, or 0.5 × 164 = 82 g.
Correct answer: 82- A. M
- B. M/2
- C. 2M
- D. M/4
Explanation: For gases at the same temperature and pressure, density is proportional to molecular weight because ρ = PM/RT.
Correct answer: 2M- A. 0.00
- B. 0.18
- C. 0.24
- D. 1.00
Explanation: The crystals contain 142/(142 + 180) = 0.441 of Na2SO4, so they remove 35.3 kg salt and 44.7 kg water.
Correct answer: 0.18- A. 10%
- B. 5%
- C. 18.18%
- D. 20%
Explanation: Take 100 mol of feed: it contains 10 mol H2, 10 mol O2 and 30 mol CO2, while water is removed on condensation.
Correct answer: 20%- A. Limiting the inerts
- B. Enriching the product
- C. Increasing the product yield
- D. Heat conservation
Explanation: A purge removes a portion of the recycle stream so inert or unwanted nonreactive material does not accumulate to excessive levels.
Correct answer: Limiting the inerts- A. Chlorine
- B. All the gases will have the same KE
- C. Ethane
- D. Nitrogen
Explanation: For an ideal gas, the average kinetic energy per mole is proportional only to temperature, specifically 3RT/2, and does not depend on…
Correct answer: All the gases will have the same KE- A. N
- B. N/2
- C. 4N
- D. 2N
Explanation: At the same reference conditions, equal gas volumes contain equal numbers of molecules according to Avogadro’s law.
Correct answer: 2N- A. 1
- B. 0.1
- C. 10
- D. 1000
Explanation: A torr is defined as one millimetre of mercury pressure, so 1 torr equals 1 mm Hg.
Correct answer: 1- A. H+ ions are absent
- B. Both H+ and OH- ions are present in very small but equal concentration
- C. OH- ions are absent
- D. None of these
Explanation: A neutral solution has equal concentrations of H⁺ and OH⁻ ions; at 25°C, each is about 10⁻⁷ mol/L.
Correct answer: Both H+ and OH- ions are present in very small but equal concentration19. Number of gm moles of solute dissolved in one liter of a solution is called its____________________?
- A. Equivalent weight
- B. Molality
- C. Molarity
- D. Normality
Explanation: Molarity is the number of gram-moles of solute per litre of solution. Molality instead uses kilograms of solvent, while normality uses…
Correct answer: Molarity- A. All A., B. & C.
- B. Kg-mole of solute/kg-mole of solvent
- C. Kg-mole of solute/1000 kg of solvent
- D. Kg of solute/kg of solvent
Explanation: Ratios based on amounts of solute and solvent, such as kg/kg, kg-mol/kg-mol, and kg-mol per 1000 kg solvent, do not change with…
Correct answer: All A., B. & C.Chemical Process Principles MCQs: common questions
Are these Chemical Process Principles MCQs free?
Yes. All Chemical Process Principles MCQs from Chemical Engineering are free on TestUstad, with unlimited attempts and no account needed. Nothing on this page is a sample or a trial.
How many Chemical Process Principles MCQs are on this page?
There are 2,710 Chemical Process Principles MCQs in the Chemical Engineering bank, shown 20 to a page with the correct answer and an explanation on each.
Does every Chemical Process Principles MCQ have an explanation?
Yes. Each Chemical Process Principles question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
Can I take a timed Chemical Process Principles test?
Yes. The practice button on this page starts a free Chemical Process Principles test drawn from the Chemical Engineering bank. It marks each answer instantly, gives you a score at the end, and can be retaken as many times as you like.