⚗️ Chemical Engineering Solved MCQs with Answers

Practice 1920 approved ⚗️ Chemical Engineering questions with verified answers from the 🛠️ Engineering Essentials subject for Pakistan exams.

1920 solved MCQs

Which of the following is not a component of working capital ?Answer: Transportation facilities. Which of the following forces does not act on a fluid at rest ?Answer: Viscous force Density in the solid state is slightly less than that in its liquid state, in case ofAnswer: Water In declining balance method of depreciation calculation, theAnswer: Annual depreciation is the fixed percentage of the property value at the beginning of the particular year. Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.Answer: Dislocation Which of the following relationship is not correct is case of a chemical process plant ?Answer: Total product cost = direct production cost + plant overhead cost. __________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.Answer: Froude The delivery pressure of boiler feed water pump compared to the boiler steam pressure isAnswer: Slightly more For a given fluid, as the pipe diameter increases, the pumping costAnswer: Decreases. In which of the electric power generation system, the operating cost is minimum ?Answer: Hydroelectric Accumulated sum at the end of 5 years, if Rs. 10000 is invested now at 10% interest per annum on a compound basis is Rs.Answer: 16105 Operating profit of a chemical plant is equal toAnswer: Profit before interest and tax i.e., net profit + interest + tax In a manufacturing industry, break even point occurs, when theAnswer: Total annual product cost equals the total annual sales. Gross earning is equal to the total income minusAnswer: Total product cost The depreciation during the year 'n', in diminishing balance method of depreciation calculation, is calculated by multiplying a fixed percentage 'N' to theAnswer: Book value at the end of (n - 1)th year, Scheduling provides information about theAnswer: Time of starting of job and also about how much work should be completed during a particular period. The inventory of raw materials included in the working capital is usually about __________ months supply of raw materials valued at delivery prices.Answer: One Which of the following is the costliest material of construction used in pressure vessel construction ?Answer: Titanium Most chemical plants use an initial working capital amounting to 10-20% of the total capital investment. But this percentage may increase to __________ percent in case of seasonal products manufacturing plant.Answer: 50 Fixed charges for a chemical plant does not include theAnswer: Property tax, insurance and depreciation. 'Utilities' in a chemical process plant includes compressed air, steam, water, electrical power, oxygen, acetylene, fuel gases etc. Utility costs for ordinary chemical process plants ranges roughly from __________ percent of the total product cost.Answer: 10 to 20 The economic life of a large chemical process plant as compared to a small chemical plant isAnswer: Much more Cost of instrumentation in a modern chemical plant ranges from __________ percent of the total plant cost.Answer: 20 to 30 __________ taxes are based on gross earnings.Answer: Income Pick out the wrong statement.Answer: Total cost of production is more than net sales realisation (NSR) at break even point. If the interest rate of 10% per period is compounded half yearly, the actual annual return on the principal will be __________ percent.Answer: >20 Which of the following is a component of working capital investment ?Answer: Maintenance and repair inventory. 'Six-tenth factor' rule is used for estimating theAnswer: Equipment cost by scaling. Payback periodAnswer: Is the length of time over which the earnings on a project equals the investment. In an ordinary chemical plant, electrical installation cost may be aboutAnswer: Either (a) or (b).