MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 908 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure? |
| A. | arger dia vessel |
| B. | maller dia vessel |
| C. | arger dia long vessel |
| D. | trength of the vessel is same irrespective of the diameter |
| Answer» C. arger dia long vessel | |
| 52. |
In which of the following evaporators, steam is fed inside the tube while the liquor is outside the tube? |
| A. | ong tube vertical evaporator |
| B. | hort tube vertical evaporator |
| C. | orizontal tube evaporator |
| D. | one of these |
| Answer» D. one of these | |
| 53. |
Where does the maximum tensile strength occur in a thick cylindrical vessel subjected to internal pressure? |
| A. | t the inner surface |
| B. | t the mid thickness of the cylindrical wall |
| C. | t the outer surface |
| D. | one of these |
| Answer» B. t the mid thickness of the cylindrical wall | |
| 54. |
Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle? |
| A. | egmental baffle |
| B. | lat plate extending across the wall |
| C. | isk type baffle |
| D. | elical type baffle |
| Answer» C. isk type baffle | |
| 55. |
For turbulent flow (NRe > 2100) of low viscosity fluid (μ > 20cp) in steel pipes, the optimum inside pipe diameter is given by(where, Q = fluid flow rate, ft³/sec.ρ = fluid density, lb/ft³ μ = fluid viscosity, centipoise Di = optimum inside pipe diameter, inches) |
| A. | i, opt = 3.9 Q0.45 ρ0.13 |
| B. | i, opt = 3.9 Q0.45 . μ0.95 |
| C. | i, opt = 4.7 Q0.36 . μ3.2ρ0.13 |
| D. | i, opt = 3 Q0.36 . μ0.88 |
| Answer» B. i, opt = 3.9 Q0.45 . μ0.95 | |
| 56. |
In a cylinderical vessel subjected to internal pressure, the longitudinal stress σL and the circumferential stress, σh are related by |
| A. | h = 2 σL |
| B. | h = σL |
| C. | h = σL/2 |
| D. | o relation exists |
| Answer» B. h = σL | |
| 57. |
Lₑ/D for a Tee (used as elbow, entering run) would be around |
| A. | 5 |
| B. | 60 |
| C. | 200 |
| D. | 350 |
| Answer» C. 200 | |
| 58. |
Fixed charges for a chemical plant does not include the |
| A. | interest on borrowed money. |
| B. | rent of land and buildings. |
| C. | property tax, insurance and depreciation. |
| D. | repair and maintenance charges. |
| Answer» E. | |
| 59. |
Which of the following is not a component of depreciation cost ? |
| A. | Repairs and maintenance cost. |
| B. | Loss due to obsolescence of the equipment. |
| C. | Loss due to decrease in the demand of product. |
| D. | Loss due to accident/breakdown in the machinery. |
| Answer» B. Loss due to obsolescence of the equipment. | |
| 60. |
For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for dia of the tank in question), the thickness of the courses of shell |
| A. | decreases upwards. |
| B. | increases upwards. |
| C. | remains same throughout. |
| D. | may decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell. |
| Answer» B. increases upwards. | |
| 61. |
__________ of depreciation calculation accounts for the interest on investement. |
| A. | Straight line method |
| B. | Declining balance |
| C. | both (a) and (b) |
| D. | neither (a) nor (b). |
| Answer» E. | |
| 62. |
The total investment in a project is Rs. 10 lakhs and the annual profit is 1.5 lakhs. If the project life is 10 years, then the simple rate of return on investment is |
| A. | 15% |
| B. | 10% |
| C. | 1.5% |
| D. | 150% |
| Answer» D. 150% | |
| 63. |
Which of the following is not a component of working capital ? |
| A. | Raw materials is stock. |
| B. | Finished products in stock. |
| C. | Transportation facilities. |
| D. | Semi-finished products in the process. |
| Answer» D. Semi-finished products in the process. | |
| 64. |
Payback period |
| A. | and economic life of a project are the same. |
| B. | is the length of time over which the earnings on a project equals the investment. |
| C. | is affected by the variation in earnings after the recovery of the investment. |
| D. | all (a), (b) and (c). |
| Answer» C. is affected by the variation in earnings after the recovery of the investment. | |
| 65. |
In the design of a paddle agitator, the ratio paddle dia/tank dia is normally taken as |
| A. | 0.1 |
| B. | 0.8 |
| C. | 0.25 |
| D. | 0.5 |
| Answer» C. 0.25 | |
| 66. |
With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, Fт |
| A. | decreases very rapidly |
| B. | increases very rapidly |
| C. | remains constant |
| D. | increases linearly |
| Answer» B. increases very rapidly | |
| 67. |
Personnel working in the market research group is reponsible for the job of |
| A. | equipment selection. |
| B. | product evaluation. |
| C. | equipment design. |
| D. | cost estimation. |
| Answer» C. equipment design. | |
| 68. |
If the interest rate of 10% per period is compounded half yearly, the actual annual return on the principal will be __________ percent. |
| A. | 10 |
| B. | 20 |
| C. | >20 |
| D. | < 20 |
| Answer» D. < 20 | |
| 69. |
'Six-tenth factor' rule is used for estimating the |
| A. | equipment installation cost. |
| B. | equipment cost by scaling. |
| C. | cost of piping. |
| D. | utilities cost. |
| Answer» C. cost of piping. | |
| 70. |
Which of the following is the costliest material of construction used in pressure vessel construction ? |
| A. | Low alloy steel |
| B. | Lead |
| C. | Titanium |
| D. | High alloy steel |
| Answer» D. High alloy steel | |
| 71. |
Which of the following is a component of working capital investment ? |
| A. | Utilities plants. |
| B. | Maintenance and repair inventory. |
| C. | Process equipments. |
| D. | Depreciation. |
| Answer» C. Process equipments. | |
| 72. |
A machine has an initial value of Rs. 5000, service life of 5 years and final salvage value of Rs. 1000. The annual depreciation cost by straight line method is Rs. |
| A. | 300 |
| B. | 600 |
| C. | 800 |
| D. | 1000 |
| Answer» D. 1000 | |
| 73. |
In case of plain carbon steel, butt welded joints are used for shell plate thickness ≤ __________ cms. |
| A. | 1.2 |
| B. | 0.5 |
| C. | 3.8 |
| D. | 6.8 |
| Answer» D. 6.8 | |
| 74. |
"Break-even point" is the point of intersection of |
| A. | fixed cost and total cost. |
| B. | total cost and sales revenue. |
| C. | fixed cost and sales revenue. |
| D. | none of these. |
| Answer» C. fixed cost and sales revenue. | |
| 75. |
In declining balance method of depreciation calculation, the |
| A. | value of the asset decreases linearly with time. |
| B. | annual cost of depreciation is same every year. |
| C. | annual depreciation is the fixed percentage of the property value at the beginning of the particular year. |
| D. | none of these. |
| Answer» D. none of these. | |
| 76. |
The depreciation during the year 'n', in diminishing balance method of depreciation calculation, is calculated by multiplying a fixed percentage 'N' to the |
| A. | initial cost. |
| B. | book value at the end of (n - 1)th year, |
| C. | depreciation during the (n - 1)th year. |
| D. | difference between initial cost and salvage value. |
| Answer» C. depreciation during the (n - 1)th year. | |
| 77. |
'P' is the investment made on an equipment, 'S' is its salvage value and 'n is the life of the equipment in years. The depreciation for rath year by the sum-of years digit method will be |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» E. | |
| 78. |
In which of the electric power generation system, the operating cost is minimum ? |
| A. | Thermal |
| B. | Nuclear |
| C. | Hydroelectric |
| D. | Fast breeder reactor |
| Answer» D. Fast breeder reactor | |
| 79. |
'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. |
| A. | 1 to 5 |
| B. | 10 to 20 |
| C. | 25 to 35 |
| D. | 35 to 45 |
| Answer» C. 25 to 35 | |
| 80. |
Cost of piping in a fluid processing unit (e.g., distillation) of a chemical process plant is about __________ percent of the fixed capital investment. |
| A. | 4 |
| B. | 13 |
| C. | 22 |
| D. | 34 |
| Answer» C. 22 | |
| 81. |
Functional depreciation of an equipment is the measure of decrease in its value due to its |
| A. | ageing |
| B. | wear and tear |
| C. | obsolescence |
| D. | breakdown or accident |
| Answer» D. breakdown or accident | |
| 82. |
Optimum economic pipe diameter for fluid is determined by the |
| A. | viscosity of the fluid. |
| B. | density of the fluid. |
| C. | total cost considerations (pumping cost plus fixed cost of the pipe). |
| D. | none of these. |
| Answer» D. none of these. | |
| 83. |
In a chemical process plant, the total product cost comprises of manufacturing cost and the |
| A. | general expenses |
| B. | overhead cost |
| C. | R & D cost |
| D. | none of these |
| Answer» B. overhead cost | |
| 84. |
Chemical engineering plant cost index is used for finding the present cost of a particular chemical plant, if the cost of similar plant at some time in the past is known. The present cost of the plant = original cost x (index value at present/index value at the time original cost was obtained)The most major component of this cost index is |
| A. | fabricated equipment and machinery. |
| B. | process instruments and control. |
| C. | pumps and compressor. |
| D. | electrical equipments and material. |
| Answer» B. process instruments and control. | |
| 85. |
The __________ of a chemical company can be obtained directly from the balance sheet as the difference between current assets and current liabilities. |
| A. | cash ratio |
| B. | net working capital |
| C. | current ratio |
| D. | liquids assets |
| Answer» C. current ratio | |
| 86. |
Manufacturing cost in a chemical company does not include the |
| A. | fixed charges. |
| B. | plant overheads. |
| C. | direct products cost. |
| D. | administrative expenses. |
| Answer» E. | |
| 87. |
If 'S' is the amount available after 'n' interest periods for an initial principal 'P' with the discrete compound interest rate 'i', the present worth is given by |
| A. | (1 + i)ⁿ/S |
| B. | S/(1 + i)ⁿ |
| C. | S/(1 + in) |
| D. | S/(1 + n)ᶦ |
| Answer» C. S/(1 + in) | |
| 88. |
A reactor having a salvage value of Rs. 10000 is estimated to have a service life of 10 years. The annual interest rate is 10%. The original cost of the reactor was Rs. 80000. The book value of the reactor after 5 years using sinking fund depreciation method will be Rs. |
| A. | 40096 |
| B. | 43196 |
| C. | 53196 |
| D. | 60196 |
| Answer» E. | |
| 89. |
Factory manufacturing cost is the sum of the direct production cost |
| A. | fixed charges and plant overhead cost. |
| B. | and plant overhead cost. |
| C. | plant overhead cost and administrative expenses. |
| D. | none of these. |
| Answer» B. and plant overhead cost. | |
| 90. |
The ratio of gross annual sales to the fixed capital investment is termed as the __________ ratio. |
| A. | cash reserve |
| B. | capital |
| C. | turnover |
| D. | investment |
| Answer» D. investment | |
| 91. |
Lₑ/D for fully open gate valves would be |
| A. | much more than that for fully open globe valves. |
| B. | much less (say 2% than that for fully open globe valves). |
| C. | around 7. |
| D. | both (b) and (c). |
| Answer» E. | |
| 92. |
Which of the following elements is not included in the scope of market analysis ? |
| A. | Competition from other manufactures. |
| B. | Product distribution. |
| C. | Opportunities |
| D. | Economics |
| Answer» E. | |
| 93. |
Generally, income taxes are based on the |
| A. | total income |
| B. | gross earning |
| C. | total product cost |
| D. | fixed cost |
| Answer» C. total product cost | |
| 94. |
A present sum of Rs. 100 at the end of one year, with half yearly rate of interest at 10%, will be Rs. |
| A. | 121 |
| B. | 110 |
| C. | 97 |
| D. | 91 |
| Answer» B. 110 | |
| 95. |
The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about __________ times the design pressure. |
| A. | 1.5 to 2 |
| B. | 3 to 4 |
| C. | 4 to 5 |
| D. | >5 |
| Answer» B. 3 to 4 | |
| 96. |
Construction expenses are roughly __________ percent of the total direct cost of the plant. |
| A. | 2 |
| B. | 10 |
| C. | 30 |
| D. | 50 |
| Answer» C. 30 | |
| 97. |
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 the |
| A. | manufacturing cost. |
| B. | depreciation by sinking fund method. |
| C. | discrete compound interest. |
| D. | cash ratio. |
| Answer» C. discrete compound interest. | |
| 98. |
For a typical project, the cumulative cash flow is zero at the |
| A. | end of the project life. |
| B. | break even point. |
| C. | start up. |
| D. | end of the design stage. |
| Answer» C. start up. | |
| 99. |
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 to |
| A. | 0.1 |
| B. | 0.6 |
| C. | 0.2 |
| D. | 0.8 |
| Answer» C. 0.2 | |
| 100. |
Effluent treatment cost in a chemical plant is categorised as the __________ cost. |
| A. | fixed |
| B. | overhead |
| C. | utilities |
| D. | capital |
| Answer» D. capital | |