MCQOPTIONS
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MCQOPTIONS
This section includes 170 Mcqs, each offering curated multiple-choice questions to sharpen your Avionics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The instrument used to heat inflammable liquids in crystallization is |
| A. | flame |
| B. | wire gauze |
| C. | hot plate |
| D. | water bath |
| Answer» E. | |
| 2. |
The identification of an element is |
| A. | Testing |
| B. | quantitative analysis |
| C. | Qualitative analysis |
| D. | Physical test |
| Answer» D. Physical test | |
| 3. |
The mobile phase can be |
| A. | gas or liquid |
| B. | solid or liquid |
| C. | only solid |
| D. | only gas |
| Answer» B. solid or liquid | |
| 4. |
When was Ezra Pound born? |
| A. | 12 May 1882 |
| B. | 8 March 1884 |
| C. | 30 October 1885 |
| D. | 23 August 1889 |
| Answer» D. 23 August 1889 | |
| 5. |
For crystallization we use the solution that should be |
| A. | Saturated |
| B. | supersaturated |
| C. | dilute |
| D. | binary |
| Answer» B. supersaturated | |
| 6. |
Solvent extraction is more good if repeated extractions are done using |
| A. | Large solvent |
| B. | small solvent |
| C. | extra solvent |
| D. | none |
| Answer» C. extra solvent | |
| 7. |
The specific growth rate is affected by |
| A. | product concentration |
| B. | sabstrate concentration |
| C. | all of these |
| D. | oxygen supply |
| Answer» D. oxygen supply | |
| 8. |
Wash out in steady state fermentation occurs when |
| A. | dilution rate is higher than the maximum specific growth rate |
| B. | dilution rate is less than maximum specific growth rate |
| C. | specific growth rate is maximum |
| D. | cell concentration reaches the maximum |
| Answer» B. dilution rate is less than maximum specific growth rate | |
| 9. |
The hit and trail method is used in crystallization to choose |
| A. | solvent |
| B. | solute |
| C. | solution |
| D. | medium |
| Answer» B. solute | |
| 10. |
Gases more dense than air include |
| A. | oxygen |
| B. | carbon dioxide |
| C. | ammonia |
| D. | hydrogen |
| Answer» C. ammonia | |
| 11. |
The medium used for filtration is |
| A. | Filter paper |
| B. | paper |
| C. | wax |
| D. | tissue paper |
| Answer» B. paper | |
| 12. |
Which of the following is not correct for the Monod model and the Michaelis Menten Model? |
| A. | The Michaelis Menten model was derived from an analysis of the mechanism of microbial growth |
| B. | The Michaelis Menten Model was derived from a curve fitting exercise |
| C. | All of the above |
| D. | The Monod model was derived from an analysis of the mechanism of microbial growth |
| Answer» E. | |
| 13. |
The crucible which is made up of porcelain is |
| A. | Gooch crucible |
| B. | sintered glass crucible |
| C. | clay crucible |
| D. | none |
| Answer» B. sintered glass crucible | |
| 14. |
Which date is considered the founding of FBI? |
| A. | 6/24/1903 12:00:00 AM |
| B. | 7/4/1901 12:00:00 AM |
| C. | 8/16/1910 12:00:00 AM |
| D. | 7/26/1908 12:00:00 AM |
| Answer» E. | |
| 15. |
To prepare fluted filter paper the arrangement formed is |
| A. | fan like |
| B. | fish like |
| C. | star like |
| D. | flask like |
| Answer» B. fish like | |
| 16. |
Chromatography with solid stationary phase is called |
| A. | circle chromatography |
| B. | Square chromatography |
| C. | solid chromatography |
| D. | adsorption chromatography |
| Answer» E. | |
| 17. |
Elements in the same period may have |
| A. | same number of shells |
| B. | different number of neutrons |
| C. | all of these |
| D. | different number of electrons |
| Answer» D. different number of electrons | |
| 18. |
Where was Ezra Pound born? |
| A. | Hailey |
| B. | Clinton |
| C. | Wyncote |
| D. | Philadelphia |
| Answer» B. Clinton | |
| 19. |
The high oxygen transfer efficiencies of airlift bioreactors is due to |
| A. | the large aspect ratio of the reactor, which leads to a high oxygen solubility at the base of the reactor |
| B. | the large aspect ratio of the reactor, which leads to a high gas hold-up |
| C. | all of the above |
| D. | the draft tube, which reduces bubble coalescence in the reactor |
| Answer» D. the draft tube, which reduces bubble coalescence in the reactor | |
| 20. |
When did Ezra Pound die? |
| A. | 6/10/1978 12:00:00 AM |
| B. | 1/22/1979 12:00:00 AM |
| C. | 11/1/1972 12:00:00 AM |
| D. | 7/11/1973 12:00:00 AM |
| Answer» D. 7/11/1973 12:00:00 AM | |
| 21. |
Cations are |
| A. | negatively charged ions |
| B. | positively charged ions |
| C. | travel towards anode during polarization |
| D. | travel towards anode during electrolysis |
| Answer» C. travel towards anode during polarization | |
| 22. |
Chemostats work on the principle of |
| A. | maintaining continuous flow of nutrients |
| B. | maintaining constant volume of culture medium |
| C. | operating at higher pressure |
| D. | maintaining uniform nutrients concentration |
| Answer» E. | |
| 23. |
The filter paper should fit tightly to provide |
| A. | Flow |
| B. | suction |
| C. | force |
| D. | pressure |
| Answer» C. force | |
| 24. |
To cover one fourth of filter paper with precipitate filter paper should be |
| A. | large |
| B. | small |
| C. | medium |
| D. | none |
| Answer» B. small | |
| 25. |
Lag phase occurs mainly due to |
| A. | higher growth temperature |
| B. | acclimatization with new environment and substrate |
| C. | variation in substrate concentration |
| D. | substrate disliking |
| Answer» C. variation in substrate concentration | |
| 26. |
The main function(s) of a draft tube in an air lift fermenter is/are to |
| A. | distribute shear forces throughout the reactor and minimise bubble coalescence |
| B. | increase the solubility of oxygen |
| C. | concentrate shear forces near the disengagement zone |
| D. | concentrate shear forces around the sparger |
| Answer» B. increase the solubility of oxygen | |
| 27. |
How were the years from1921 to 1933 known? |
| A. | Golden years |
| B. | Classical years |
| C. | Age of Enlightenment |
| D. | Lawless years |
| Answer» E. | |
| 28. |
A higher Ks value of Monod\'s equation means |
| A. | lower affinities to substrate |
| B. | greater affinities to substrate |
| C. | lower dissociation constant value |
| D. | unaffected with the substrate bonding |
| Answer» C. lower dissociation constant value | |
| 29. |
During the log phase cell numbers increase exponentially |
| A. | because cells do not have cell membranes |
| B. | because cells produce enzymes |
| C. | because the rate of cell division increases exponentially |
| D. | because cells are autocatalysts |
| Answer» E. | |
| 30. |
Why a T-flask used in small-scale cell culture is incubated in a horizontal position? |
| A. | To increase the surface area of the liquid-air interface |
| B. | To save space |
| C. | To increase the rate of oxygen transfer into the liquid |
| D. | Both ( and ( |
| Answer» E. | |
| 31. |
Upon oxidation of acidified potassium manganate (VII), the purple color of Manganese |
| A. | changes to pink |
| B. | stays |
| C. | becomes blue |
| D. | becomes colorless |
| Answer» E. | |
| 32. |
The stem of funnel should have length of few |
| A. | millimetrs |
| B. | metres |
| C. | cm |
| D. | inches |
| Answer» E. | |
| 33. |
Which Attorney General ordered Special Agents to report to Chief Examiner? |
| A. | Charles Bonaparte |
| B. | Napoleon Bonaparte |
| C. | Alexander Hague |
| D. | John Ashcroft |
| Answer» B. Napoleon Bonaparte | |
| 34. |
Where did Ezra Pound die? |
| A. | Gibraltar |
| B. | Crawfordsville |
| C. | New York |
| D. | Venice |
| Answer» E. | |
| 35. |
A purple stain is obtained if the ninhydrin spray is used to locate |
| A. | protean |
| B. | peptones |
| C. | amino acids |
| D. | protein |
| Answer» D. protein | |
| 36. |
Which college did Ezra Pound attend? |
| A. | Merton College |
| B. | Hamilton College |
| C. | Newman College |
| D. | Trinity College |
| Answer» C. Newman College | |
| 37. |
The contents in jet loop reactor are mixed through |
| A. | a mechanical agitator |
| B. | compressed air |
| C. | any of these |
| D. | external pumping |
| Answer» E. | |
| 38. |
An effective way of purifying liquids containing suspensions is |
| A. | decanting |
| B. | crystallization |
| C. | separating funnel |
| D. | centrifuging |
| Answer» E. | |
| 39. |
Solvent extraction is done with help of |
| A. | conical flask |
| B. | water bath |
| C. | separating funnel |
| D. | test tubes |
| Answer» D. test tubes | |
| 40. |
Usually crystals are dried with help of |
| A. | fan |
| B. | autoclave |
| C. | filter paper |
| D. | dryer |
| Answer» D. dryer | |
| 41. |
In plug flow tubular reactor the axial velocity profile on cross-section will be |
| A. | varying with time |
| B. | constant |
| C. | power function of time |
| D. | non-linear |
| Answer» C. power function of time | |
| 42. |
The colour appear ed after extraction of iodine is |
| A. | brown |
| B. | pink |
| C. | purple |
| D. | blue |
| Answer» D. blue | |
| 43. |
The filter paper is made into |
| A. | cone |
| B. | triangle |
| C. | square |
| D. | circle |
| Answer» B. triangle | |
| 44. |
Availability of filter papers is according to various |
| A. | shapes |
| B. | colours |
| C. | dots |
| D. | porosites |
| Answer» E. | |
| 45. |
The increased air flow rate in bubble column fermenter can cause excessive foaming and high retention of air bubbles in the column which |
| A. | increases the productivity of the fermenter |
| B. | decreases the productivity of the fermenter |
| C. | does not affect on the productivity |
| D. | modestly increases the productivity of the fermenter |
| Answer» C. does not affect on the productivity | |
| 46. |
Who as editor of New Age published Ezra Pound’s writings? |
| A. | Ernest Fenollosa |
| B. | Clifford Douglas |
| C. | Alfred Orage |
| D. | Antonio Vivaldi |
| Answer» D. Antonio Vivaldi | |
| 47. |
A poisonous gas released in exhaust fumes is |
| A. | CO2 |
| B. | SO2 |
| C. | P2O5 |
| D. | CO |
| Answer» E. | |
| 48. |
The ditribution coefficient is represented by |
| A. | K |
| B. | S |
| C. | H |
| D. | G |
| Answer» B. S | |
| 49. |
Covalent compounds |
| A. | are not formed through exchange of electrons |
| B. | are not made of ions |
| C. | all of these |
| D. | formulae can not be worked out |
| Answer» D. formulae can not be worked out | |
| 50. |
Population doubling time, td can be expressed as (where μ is the specific growth rate.) |
| A. | ln2/μ |
| B. | log2/μ |
| C. | μ/log2 |
| D. | μ/ln2 |
| Answer» B. log2/μ | |