MCQOPTIONS
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MCQOPTIONS
This section includes 5314 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1551. |
Removal of iron from water takes place at a pH of ______ |
| A. | 1.5 |
| B. | 3 |
| C. | 8.2 |
| D. | 9.4 |
| Answer» E. | |
| 1552. |
When small amounts of iron and manganese are present in water, they are removed by ____________ |
| A. | Aeration |
| B. | Coagulation |
| C. | Manganese zeolite |
| D. | Filtration |
| Answer» D. Filtration | |
| 1553. |
Removal of manganese from water takes place at a pH of ______ |
| A. | 1.5 |
| B. | 3 |
| C. | 6 |
| D. | 9.4 |
| Answer» E. | |
| 1554. |
For removal of manganese from water ________ mg of oxygen is required. |
| A. | 0.14 |
| B. | 0.50 |
| C. | 0.29 |
| D. | 0.90 |
| Answer» D. 0.90 | |
| 1555. |
For removal of iron from water ________ mg of oxygen is required. |
| A. | 0.14 |
| B. | 0.50 |
| C. | 1 |
| D. | 1.5 |
| Answer» B. 0.50 | |
| 1556. |
By aeration process, dissolved iron is oxidized into ____________ |
| A. | Ferrous oxide |
| B. | Ferric oxide |
| C. | Ferrous hydroxide |
| D. | Ferric hydroxide |
| Answer» C. Ferrous hydroxide | |
| 1557. |
The brown tinge in the water is due to the presence of ____________ |
| A. | Zinc |
| B. | Copper |
| C. | Iron |
| D. | Manganese |
| Answer» E. | |
| 1558. |
The reddish tinge in the water is due to the presence of ____________ |
| A. | Zinc |
| B. | Copper |
| C. | Iron |
| D. | Manganese |
| Answer» D. Manganese | |
| 1559. |
The presence of Sulfate iron in the water results in ____________ |
| A. | Odorless water |
| B. | Acidity in water |
| C. | Colorless water |
| D. | Growth of crenothrix in water mains |
| Answer» C. Colorless water | |
| 1560. |
Iron and Manganese are generally present in water supplies as ____________ |
| A. | Suspension |
| B. | Solution |
| C. | Colloidal particles |
| D. | Either suspension or solution |
| Answer» E. | |
| 1561. |
The commonly used techniques for measuring quality costs are __________ |
| A. | Trend analysis and Pareto analysis |
| B. | Trend analysis only |
| C. | Pareto analysis only |
| D. | Trigonometry |
| Answer» B. Trend analysis only | |
| 1562. |
Which of the following describes best Juran’s model of optimum quality costs? |
| A. | It includes costs of internal and external failures curve, costs of appraisal and prevention curve and total quality costs curve |
| B. | It includes costs of internal and external failures curve and costs of appraisal and prevention curve |
| C. | It includes costs of internal and external failures curve and total quality costs curve |
| D. | It includes costs of appraisal and prevention curve and total quality costs curve |
| Answer» B. It includes costs of internal and external failures curve and costs of appraisal and prevention curve | |
| 1563. |
Which of the following does not fall under the category of Hidden Costs? |
| A. | Potential loss sales |
| B. | Loss of customer goodwill |
| C. | Offsetting customer dissatisfaction |
| D. | Marketing research |
| Answer» E. | |
| 1564. |
What is the other name of intangible costs? |
| A. | Hidden Costs |
| B. | Prevention Costs |
| C. | Appraisal Costs |
| D. | Internal Failure Costs |
| Answer» B. Prevention Costs | |
| 1565. |
Expense reports, credit and debit memos and cost estimates are important sources for collecting/reporting quality costs in an organization. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1566. |
Timesheets, schedules and minutes of meetings are important sources for collecting/reporting quality costs in an organization. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1567. |
Quality cost per unit of production is called _______ |
| A. | Labor base index |
| B. | Rupee base index |
| C. | Sales base index |
| D. | Unit base index |
| Answer» E. | |
| 1568. |
Quality cost per rupee of net sales is called _______ |
| A. | Labor base index |
| B. | Rupee base index |
| C. | Sales base index |
| D. | Unit base index |
| Answer» D. Unit base index | |
| 1569. |
Quality cost per rupee of production cost is called _______ |
| A. | Labor base index |
| B. | Cost base index |
| C. | Sales base index |
| D. | Production base index |
| Answer» C. Sales base index | |
| 1570. |
Quality cost per hour direct labor is called ________ |
| A. | Labor base index |
| B. | Cost base index |
| C. | Sales base index |
| D. | Unit base index |
| Answer» B. Cost base index | |
| 1571. |
(7x + 2)-(x2 + 5) in Z_10 = |
| A. | 9x2 + 7x + 7 |
| B. | 9x2+ 6x + 10 |
| C. | 8x2 + 7x + 6 |
| D. | None of the mentioned |
| Answer» B. 9x2+ 6x + 10 | |
| 1572. |
The sum of polynomials of degrees m and n has degree max[m,n]. |
| A. | True |
| B. | False |
| C. | Can’t Say |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 1573. |
The product of polynomials of degrees m and n has a degree m+n+1. |
| A. | True |
| B. | False |
| C. | Can’t Say |
| D. | None of the mentioned |
| Answer» C. Can’t Say | |
| 1574. |
The product of monic polynomials is monic. |
| A. | True |
| B. | False |
| C. | Can’t Say |
| D. | None of the mentioned |
| Answer» B. False | |
| 1575. |
7x = 6 mod 5. Then the value of x is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 1576. |
Multiply 00100110 by 10011110 in GF(2^8) with modulus 100011011.The result isa) 00101111b) 00101100c) 01110011d) 11101111 7.Find the inverse of (x7+x+1) modulo (x8 + x4 + x3+ x + 1). |
| A. | 00101111b) 00101100c) 01110011d) 11101111 7.Find the inverse of (x7+x+1) modulo (x8 + x4 + x3+ x + 1).a) x7+x |
| B. | 00101100c) 01110011d) 11101111 7.Find the inverse of (x7+x+1) modulo (x8 + x4 + x3+ x + 1).a) x7+xb) x6+x3 |
| C. | 01110011d) 11101111 7.Find the inverse of (x7+x+1) modulo (x8 + x4 + x3+ x + 1).a) x7+xb) x6+x3c) x7 |
| D. | 11101111 7.Find the inverse of (x7+x+1) modulo (x8 + x4 + x3+ x + 1).a) x7+xb) x6+x3c) x7d) x5+1View Answer |
| Answer» B. 00101100c) 01110011d) 11101111 7.Find the inverse of (x7+x+1) modulo (x8 + x4 + x3+ x + 1).a) x7+xb) x6+x3 | |
| 1577. |
Multiply the polynomials P1 = x5 +x2+ x) by P2 = (x7 + x4 +x3+x2 + x) in GF(28) with irreducible polynomial (x8 + x4 + x3 + x + 1). The result is |
| A. | x4+ x3+ x+1 |
| B. | x5+ x3+x2+x+1 |
| C. | x5+ x4+ x3+x+1 |
| D. | x5+ x3+x2+x |
| Answer» C. x5+ x4+ x3+x+1 | |
| 1578. |
The polynomial x4+1 can be represented as – |
| A. | (x+1)(x3+x2+1) |
| B. | (x+1)(x3+x2+x) |
| C. | (x)(x2+x+1) |
| D. | None of the mentioned |
| Answer» E. | |
| 1579. |
If f(x)=x7+x5+x4+x3+x+1 and g(x)=x3+x+1, find f(x) – g(x). |
| A. | x7+x5+x4+x3 |
| B. | x6+x4+x2+x |
| C. | x4+x2+x+1 |
| D. | x7+x5+x4 |
| Answer» E. | |
| 1580. |
The rate of change of the excess density is proportional to the density. Is it true of false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1581. |
Which of the following is used as the recombination agent by semiconductor device manufactures? |
| A. | Silver |
| B. | Gold |
| C. | Platinum |
| D. | Aluminium |
| Answer» C. Platinum | |
| 1582. |
Calculate the carrier lifetime when Cp=5 and Nt=1010cm-3. |
| A. | 2*1011 |
| B. | 2*10-11 |
| C. | 20*10-11 |
| D. | 20*1011 |
| Answer» C. 20*10-11 | |
| 1583. |
Calculate the emission rate where En=2.5, Nt=1010cm-3 and fF (Et)=0.6 . |
| A. | 15*1010 |
| B. | 1.5*1010 |
| C. | 15*1011 |
| D. | 1.5*1011 |
| Answer» C. 15*1011 | |
| 1584. |
Calculate the capture rate where Cn=10, Nt=1010cm-3, n=1020 and fF (Et)=0.4. |
| A. | 6*1030 |
| B. | 5*1030 |
| C. | 36*1030 |
| D. | 1.66*1029 |
| Answer» B. 5*1030 | |
| 1585. |
Calculate the recombination rate if the excess carrier concentration is 1014cm-3 and the carrier lifetime is 1µseconds. |
| A. | 108 |
| B. | 1010 |
| C. | 1020 |
| D. | 1014 |
| Answer» D. 1014 | |
| 1586. |
What is the process number of Schokley-Read-Hall Theory processes?Process-‘ The capture of an electron from the conduction band by an initially neutral empty trap’ |
| A. | Process1 |
| B. | Process2 |
| C. | Process3 |
| D. | Process4 |
| Answer» B. Process2 | |
| 1587. |
What is the range of the carrier lifetime? |
| A. | Nanoseconds to microseconds |
| B. | Nanoseconds to hundreds of microseconds |
| C. | Nanoseconds to tens of microseconds |
| D. | Nanoseconds to milliseconds |
| Answer» C. Nanoseconds to tens of microseconds | |
| 1588. |
Thermister is used to measure _____________ |
| A. | temperature |
| B. | pressure |
| C. | height |
| D. | displacement |
| Answer» B. pressure | |
| 1589. |
RTD stands for ________ |
| A. | resistance temperature device |
| B. | resistance temperature detector |
| C. | reluctance thermal device |
| D. | resistive thermal detector |
| Answer» C. reluctance thermal device | |
| 1590. |
The resistance Rt of a metallic conductor at any temperature t is given by ___________ |
| A. | Rt = Ro(1+ɑt) |
| B. | Rt = Ro(1-ɑt) |
| C. | Rt = Ro(ɑt-1) |
| D. | Rt = Ro(10+ɑt) |
| Answer» B. Rt = Ro(1-ɑt) | |
| 1591. |
The lower temperature junction in thermocouple is maintained at ________ |
| A. | -273 K |
| B. | 0 K |
| C. | -327 K |
| D. | 273 K |
| Answer» E. | |
| 1592. |
The junction at a lower temperature in the thermocouple called measuring junction. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1593. |
When two wires of different material are joined together at either end, forming two junctions which are maintained at a different temperature, a _________ force is generated. |
| A. | thermo-motive |
| B. | electro-motive |
| C. | chemical reactive |
| D. | mechanical |
| Answer» B. electro-motive | |
| 1594. |
When two wires of different material are joined together at either end, forming two junctions which are maintained at a different temperature, a thermo-motive force is generated causing a current to flow around the circuit. This arrangement is called ___________ |
| A. | thermal pair |
| B. | thermistor |
| C. | thermocouple |
| D. | thermostat |
| Answer» D. thermostat | |
| 1595. |
The junction at a higher temperature in thermocouple is termed as measuring junction. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1596. |
Sudden involuntary drop in body core temperature below 35*C (95*F) is called __________ |
| A. | Accidental hyperthermia |
| B. | Accidental misothermia |
| C. | Accidental exothermia |
| D. | Accidental hypothermia |
| Answer» E. | |
| 1597. |
Which techniques have been diagrammatically shown below? |
| A. | Gene therapy (Above); Molecular Medicine (Below) |
| B. | Tissue Engineering (Above); Regenerative Medicine (Below) |
| C. | Regenerative Medicine (Above); Tissue Engineering (Below) |
| D. | Cloning (Abov |
| E. | ; Molecular Medicine (Below)b) Tissue Engineering (Above); Regenerative Medicine (Below)c) Regenerative Medicine (Above); Tissue Engineering (Below)d) Cloning (Above); Molecular Medicine (Below) |
| Answer» D. Cloning (Abov | |
| 1598. |
Decellularization is a technique used to extract out cell/genetic material free extracellular matrix to produce a near-natural scaffold to avoid immune rejections. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1599. |
In tissue engineering and regenerative medicine support or biomaterial is required for the cells to be cultured. Nature’s template for a biomaterial is the _____________ |
| A. | extra-cellular matrix |
| B. | stroma lamellae |
| C. | lymph fluid |
| D. | blood plasma |
| Answer» B. stroma lamellae | |
| 1600. |
Immuno-suppressants are usually used to overcome the immune-rejection caused due to the immune system’s attack on the foreign tissue used in transplantation. |
| A. | True |
| B. | False |
| Answer» B. False | |