⚗️ 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

An alloy of Fe - 0.4 % C isAnswer: Hypo-eutectoid steel. In financial accounting of a chemical plant, which of the following relationship is invalid?Answer: Assets = capital. A material in which the atoms are arranged regularly in some directions but not in others, is termed as 'mesomorphous material'; an example of which isAnswer: Lead In extrusion of metals, which of the following statement is true ?Answer: Hollow ram is used for indirect extrusion. Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV.Answer: 200 DepreciationAnswer: All (a), (b) and (c). Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ?Answer: None of these. Machinability of hard alloys and tool steels is improved byAnswer: Annealing Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.Answer: Austenite Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body.Answer: Grey An annuity is a series of equal payments occuring at equal time intervals, and this amount includes the sum of all payments plus interest, if allowed to accumulate at a definite rate of interest from the time of initial payment to the end of annuity term. Ordinary annuity is used in the calculation of theAnswer: Depreciation by sinking fund method. In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason thatAnswer: Water velocity can be increased conveniently to increase the overall heat transfer co-efficient because of its lower specific volume compared to steam. Following the six-tenth factor rule, if a log-log plot of capacity of the equipment vs. cost of the equipment is made, then a straight line is obtained, whose slope is equal toAnswer: 0.6 Cobalt - 60 is used as a source of __________ in medical therapy & industrial radiography.Answer: γ-rays Which of the following does not come under the sales expenses for a product of a chemical plant ?Answer: Legal fees Effluent treatment cost in a chemical plant is categorised as the __________ cost.Answer: Utilities Factory manufacturing cost is the sum of the direct production costAnswer: Fixed charges and plant overhead cost. Fixed capital investment of a chemical plant is the total amount of money needed to supply the necessary plant and manufacturing facilities plus the working capital for operation of the facilities. Which of the following components of fixed capital investment requires minimum percentage of it ?Answer: Equipment insulation cost. Which of the following is the cheaptest material of construction for the storage of sodium hydroxide upto a concentration of 75% ?Answer: Plain carbon steel The value of a property decreases __________ with time in straight line method of determining depreciation.Answer: Linearly A present sum of Rs. 100 at the end of one year, with half yearly rate of interest at 10%, will be Rs.Answer: 121 Absolute zero pressure can be attained at a temperature ofAnswer: 0°R Maximum production start up cost for making a chemical plant operational is about __________ percent of the fixed capital cost.Answer: 10 Which of the following is not a mathematical method for evaluation of profitability of a chemical process plant ?Answer: Cash reserve. The product out from a cupola is calledAnswer: Cast iron With increase in the discounted cash flow rate of return, the ratio of the total present value to the initial investment of a given projectAnswer: Decreases __________ of depreciation calculation does not take into account the interest on investments.Answer: Sum of the years-digits method Optimum economic pipe diameter for fluid is determined by theAnswer: Total cost considerations (pumping cost plus fixed cost of the pipe). Pick out the wrong statement.Answer: At break even point, NSR is more than the total production cost Which of the following is not a current asset of a chemical company ?Answer: Chemical equipments