Exam 1 - Various Flashcards
(50 cards)
1
Q
- What aspect of analytical chemistry is being measured with analyzer boiling .1827 degrees Celsius in the sample?
a. Physical property
b. Chemical property
c. Intrinsic property
d. analytical property
A
a. Physical property
2
Q
- what aspect of analytical chemistry is being measured with an analyzer whose output represents the concentration of butane in the sample?
a. Physical property
b. Chemical property
c. Intrinsic property
d. analytical property
A
b. Chemical property
3
Q
- What does one normally know in advance about the process stream?
a. Thermal conductivity
b. chemical property
c. the make up
d. refractive index
A
c. the make up
4
Q
- efficiency, safety and environmental monitoring are three benefits of?
a. Qualitative analysis
b. compliance analysis
c. process analysis
d. quantitative analysis
A
c. process analysis
5
Q
- what type of analysis, qualitative or quantitative, occurs with an analyzer that determines that a particular gas makes 0.27% of the sample?
a. Qualitative analysis
b. Quantitative analysis
A
b. Quantitative analysis
6
Q
- What type of analysis, qualitative or quantitative, occurs with an analyzer that determines that there is butane in the sample?
a. Qualitative analysis
b. Quantitative analysis
A
a. Qualitative analysis
7
Q
- What is an analyzer?
a. The chemical component in a mixture
b. The intrinsic physical properties
c. The measurement system
d. The quantitative multiple component
A
c. The measurement system
8
Q
- What are the requirements for an analyzer to be considered ON-LINE?
a. Connected to the process
b. Actively measuring one or more chemicals or properties of interest
c. Actively sending data
d. All of the above
A
d. All of the above
9
Q
- While in use, is a personal safety monitor considered on-line?
True or False
A
True
10
Q
- What is the major sample concentration difference between process and compliance analyzers?
a. Process Analyzer is measuring relatively high concentrations, whereas a compliance analyzer is for measuring relatively low concentrations.
b. A process analyzer is for measuring relatively low concentrations’ whereas a compliance analyzer is for measuring relatively high concentrations
c. A process analyzer does not measure fluids but may monitor ambient air, stack emissions, river or effluent waters
d. None of the above
A
a. Process Analyzer is measuring relatively high concentrations, whereas a compliance analyzer is for measuring relatively low concentrations.
11
Q
- Resistive, current limiting and chemical specific are three classification of what type of sensor?
a. Physical specific
b. Chemical specific
c. Process specific
d. Compliance specific
A
b. Chemical specific
12
Q
- What are the 3 classifications of analyzer sensors?
a. In-line, At-line and Distant
b. Physical, Chemical and conductive
c. Quantitative, Qualitative and Process
d. Resistive, Current limiting and chemical specific
A
d. Resistive, Current limiting and chemical specific
13
Q
- What sensor type monitors a substance by measuring the current it develops when it reacts with the metal of an electrode.
a. Physical specific
b. Chemical specific
c. Process specific
d. Compliance specific
A
b. Chemical specific
14
Q
- In-line, At-line or Distance are examples of?
a. Process Line
b. Sample of sensors
c. Locations of analyzer sensors
d. All of the above
A
c. Locations of analyzer sensors
15
Q
- What analyzer sensor location might have the largest temperature effects from the process?
a. In-line
b. At-Line
c. Distance
d. All of the above
A
c. Distance
16
Q
- What part of an analyzer system are 80% of the problems found?
a. Grab sample
b. Analyzer
c. Process line
d. Sample handling
A
d. Sample handling
17
Q
- What is the major disadvantage of a grab samples?
a. Least economical
b. Subject to the greatest inaccuracy
c. Most difficult
d. Account for the great account of problems in on-line system
A
b. Subject to the greatest inaccuracy
18
Q
- What is the difference bet a grab sample and an extracted sample?
a. An extracted sample is automatically transported to the analyzer, whereas a grab sample is manually carried to the analyzer.
b. An extracted sample is manually carried to the analyzer; whereas a grab sample is automatically carried to the analyzer
c. An extracted sample is manually collected at a timed basis; whereas a grab sample is automatically collected at a timed basis
d. An extracted sample is required on a daily basis; whereas a grab sample is usually done by a lab technician
A
a. An extracted sample is automatically transported to the analyzer, whereas a grab sample is manually carried to the analyzer.
19
Q
- What is the output signal of an analyzer is made up of?
a. The transducer’s response to the chemical of interest
b. The transducer’s response to other components in the sample
c. Electrical nose
d. All of the above
A
d. All of the above
20
Q
- What are three types of electrical noise that affect the analyzer sensor?
a. Vibration, Radio, Environmental
b. Instrument, Frequency, Thermal
c. Thermal, Flicker, Environmental
d. Insturment, Thermal, Radio
A
c. Thermal, Flicker, Environmental
21
Q
- What are the two frequency ranges that should be used in analyzer circuitry ability of environmental noisy third friends?
a. Between 1 hz and 60 hz and between 360 hz and 500 hz
b. Between 1 hz and 60 hz and between 300 hz and 500 hz
c. Between 1 hz and 90 hz and between 300 hz and 560 hz
d. Between 1 hz and 60 hz and between 360 hz and 560 hz
A
a. Between 1 hz and 60 hz and between 360 hz and 500 hz
22
Q
- What is the name for the analyzer characteristic curve that graphs the relationship between sample concentration and analyzer response?
a. Detection
b. Calibration
c. Sensitivity
A
c. Sensitivity
23
Q
- what is the detection limit for an analyzer that when given a zero signal the standard deviation of the output is equal to 3.4ppb
a. 8.1 PPM
b. 10.2 PPM
c. 9.18 PPM
d. 27.54 PPM
A
b. 10.2 PPM
24
Q
- What is the basic calibration operation that is scared out with cylinder calibration gases?
a. Basic calibration
b. internal calibration
c. validation
d. all of the above
A
d. all of the above
25
25. what type of calibration gas wars is used with a gas bladder gas at low pressure to a gas detector for either calibration or validation?
a. Cylinder gas
b. calibration gas
c. bump gas
d. zero gas
c. bump gas
26
26. what substance should zero gas not contain?
a. Zero gas should be free of the analyte and anything else that the sensor will respond to
b. 0 gas should not approximate the environment of the analyte
c. zero gas should be free of any atmospheric air
d. all of the above
a. Zero gas should be free of the analyte and anything else that the sensor will respond to
27
27. what is the resulting oxygen concentration when 325 cm3/m instrument air is mixed with 725 cm3/m nitrogen?
a. 8.65%
b. 20.95%
c. 3.25%
d. 6.49%
d. 6.49%
28
28. What are the required flows of dilution gas (nitrogen) and 20 ppm so2 (in nitrogen) produce a concentration of 2.5ppm SO2 at 600 cm3/m?
a. Flow of SO2 = 75 cm3/m and flow of N2 = 525 cm3/m
b. Flow of SO2 = 525 cm3/m and flow of N2 = 75 cm3/m
c. Flow of SO2 = 125 cm3/m and flow of N2 = 262.5 cm3/m
d. Flow of SO2 = 50 cm3/m and flow of N2 = 240 cm3/m
29. What would be the detected sample concentration when the
a. Flow of SO2 = 75 cm3/m and flow of N2 = 525 cm3/m
29
29. What would be the detected sample concentration when the sample of 44.0 ppm SO2 at 20 deg c and 95 Kpaa) Is then measured when the pressure decreases to 85Kpaa the temperature rises to 35 degrees C?
a. 24.96 PPM
b. 96 ppm
c. 39.2 PPM
d. 41.7 PPM
30. What is the possible
c. 39.2 PPM
30
30. What is the possible and probable errors for an analyzer measurement system, with only a calibration gas source connected to the analyzer that vents to atmosphere, when the calibration gas has an uncertainty of +/- 3 % CO2 and atmospheric effect is +/- 5%?
a. Possible error = +/- 2.0%, probable error = 6.85%
b. Possible error = +/- 8.0%, probable error = +/-5.8%
c. Possible error = +/- 2.0%, probable error = +/- 6.85%
d. Possible error = +/- 2.0%, probable error = +/- 5.8%
b. Possible error = +/- 8.0%, probable error = +/-5.8%
31
31. Two analyzers are reporting on the same sample. Analyzer a reports 23.5 +/- 0.8ppm CO2 And analyzer B reports 25.5 +/- 0.8ppm co2. Is there a discrepancy?
a. Yes there is discrepancy. Analyzer A’s ranges from 22.7 to 24.3 PPM, and analyzer B’s range is from 24.7 to 26.3ppm. Since there is no overlap there is a discrepancy.
32
32. What is the name for heaters is scaping from the surface of a boiler?
a. Convection or conduction
b. radiant or infrared
c. thermal or active
d. exit thermic or diffusion
b. radiant or infrared
33
33. what is the best way to maximize combustion efficiency?
a. Monitor oxygen and combustibles in order to minimize excess air
b. reduce fuel, increase oxygen
c. convert energy to heat, reducing cost
d. all of the above
a. Monitor oxygen and combustibles in order to minimize excess air
34
34. three essential components of combustion.
Heat, oxygen and fuel
35
35. in most car hydrocarbons, what two elements combine with oxygen to release heat?
a. Oxygen and hydrogen
b. carbon and oxygen
c. hydrogen and sulphur
d. carbon and hydrogen
d. carbon and hydrogen
36
36. for complete combustion what is the ratio of methane to air?
a. 0.105 (1/9.53)
b. 0.053 (1/18.8)
c. 0.266 (1/3.76)
d. Above all of the above
a. 0.105 (1/9.53)
37
37. what is gaseous provides the highest heat combustion?
a. Natural gas
b. propane
c. methane
d. oxygen
b. propane
38
38. what is measure to ensure that no more excess air that required is used
a. hydrogen
b. carbon
c. suplhur
d. oxygen
d. oxygen
39
39. what is must be ensure that a minimum of carbon dioxide is produced?
a. Flue gas
b. Oxygen
c. total combustibles
d. amount of excess air
c. total combustibles
40
40. in a combustion process what is the single largest energy loss?
a. Air up the chimney flue
b. through ambient temperature
c. stoichiometric combustion
d. Heat lost through boiler blowdown
a. Air up the chimney flue
41
41. what will appear in the stack gases if a burner is open with excess fuel?
a. Carbon dioxide, water and nitrogen
b. sulphur oxide and hydrogen
c. carbon monoxide and other combustibles
d. none of the above
c. carbon monoxide and other combustibles
42
42. what factor usually cause some trace levels when burnt fuel in the flue gas stream?
a. Poor air
b. fuel mixing
c. current burner conditions
d. all of the above
d. all of the above
43
43. measurement method used to measure CO?
a. Electrolytic
b. catalytic filaments
c. infrared
d. all of the above
d. all of the above
44
44. what is the processor or CPU
- processor or CPU controls and performs data manipulations
45
45. define memory.
a. Memory controls everything performs all data manipulations
b. memory allows data to enter and leave
c. memory consists of both primary and secondary which stores program instructions and data
d. synchronizes the operations of programs and data
c. memory consists of both primary and secondary which stores program instructions and data
46
46. define input/output.
a. Consist of instructions and data
b. allows data to enter and leave the system
c. controls everything performs all data manipulations
d. stores programs and data
b. allows data to enter and leave the system
47
47. what is a data bus?
a. Group of lines (wires) that carry a word from a storage unit in one subsection to a storage unit in another
b. Group of lines and devices like decoders that carry address bits of information
c. Group of lines of control and coordinate events that happen between the subsections
d. storage unit of eight bits (1 byte)
a. Group of lines (wires) that carry a word from a storage unit in one subsection to a storage unit in another
48
48. what is a control bus?
a. A program that tells the CPU the action it must take
b. a group of lions and devices like decoders that carry address bits of information
c. Assist in the movement of words
d. a group of lines that control and coordinate the events that happened between the subsections.
d. a group of lines that control and coordinate the events that happened between the subsections.
49
49. Define Address bus.
a. Data flow between the I/O and memory
b. a group of lines and devices like decoders that carry address bits of information
c. a group of lines that carry a word from the storage unit in one subsection to the storage unit in another
d. a group of lines that control and coordinate the events that happened between subsections
b. a group of lines and devices like decoders that carry address bits of information
50
What does smoking chimney stack indicate about the combustion air supply?
a. total combustion
b. insufficient air supply
c. excess air supply
d. low levels of combustibles
b. insufficient air supply
