Mass Spectrometer Flashcards
1
Q
- Mass spectrometers are used to determine which of the following?
a) Composition in sample
b) Concentration of elements in sample
c) Relative mass of atoms
d) Properties of sample
A
c) Relative mass of atoms
2
Q
- Who invented mass spectrometers?
a) J.J Thompson
b) Goldstein
c) Nikola Tesla
d) Aston
A
v
3
Q
- In mass spectrometer, the ions are sorted out in which of the following ways?
a) By accelerating them through electric field
b) By accelerating them through magnetic field
c) By accelerating them through electric and magnetic field
d) By applying a high voltage
A
c) By accelerating them through electric and magnetic field
4
Q
- In mass spectrometer, the sample that has to be
analysed is bombarded with which of the following?
a) Protons
b) Electrons
c) Neutrons
d) Alpha particles
A
b) Electrons
5
Q
- Mass spectrometer separates ions on the basis of which of the following?
a) Mass
b) Charge
c) Molecular weight
d) Mass to charge ratio
A
d) Mass to charge ratio
6
Q
- No two molecules will be fragmented and ionized in
exactly the same manner.
a) True
b) False
A
a) True
7
Q
- The procedure for mass spectroscopy starts with which of the following processes?
a) The sample is bombarded by electron beam
b) The ions are separated by passing them into electric and magnetic field
c) The sample is converted into gaseous state
d) The ions are detected
A
c) The sample is converted into gaseous state
8
Q
- In a mass spectrometer, the ion currents are measured using which of the following?
a) Scintillation counter
b) Ion counter
c) Electrometer tube
d) Electric fields
A
c) Electrometer tube
9
Q
- Which of the following ions pass through the slit and
reach the collecting plate?
a) Negative ions of all masses
b) Positive ions of all masses
c) Negative ions of specific mass
d) Positive ions of specific mass
A
d) Positive ions of specific mass
10
Q
- In mass spectrometer, the sample gas is introduced into the highly evacuated spectrometer tube and it is ionised by electron beam.
a) True
b) False
A
a) True
11
Q
- Which of the following statements is not true about
mass spectrometry?
a) Impurities of masses different from the one being
analysed interferes with the result
b) It has great sensitivity
c) It is suitable for data storage
d) It is suitable for library retrieval
A
a) Impurities of masses different from the one being
analysed interferes with the result
12
Q
- Which of the following is not a component of mass
spectrometer?
a) Inlet system
b) Sweep generator
c) Ion transducer
d) Mass analyser
A
b) Sweep generator
13
Q
- Inlet system is also known as which of the following?
a) Initial system
b) Sample reservoir
c) Sample handling system
d) Element injection system
A
c) Sample handling system
14
Q
- Which of the following can be introduced into the
ionization chamber directly?
a) Solid samples with low vapour pressure
b) Solid samples with high vapour pressure
c) Liquid samples with low density
d) Liquid samples with high density
A
a) Solid samples with low vapour pressure
15
Q
- Which of the following is normally done to convert the
sample into the gaseous state?
a) Sample is pressurized
b) Chemical reactions are made to occur
c) Sample is heated
d) Sample is cooled
A
c) Sample is heated
16
Q
- Which of the following probes are used for the
introduction of the sample?
a) Silica
b) Quartz
c) Graphite
d) Silver
A
a) Silica
17
Q
- Which of the following is not a type of ionisation?
a) Field ionisation
b) Spontaneous ionisation
c) Spark ionisation
d) Chemical ionisation
A
b) Spontaneous ionisation
18
Q
- Mass analyser is similar to which of the following in
optical spectrometer?
a) Source
b) Monochromator
c) Detector
d) Sample
A
b) Monochromator
19
Q
- Which of the following is not one of the types of mass analyser?
a) Magnetic sector analyser
b) Frequency sweep analyser
c) Double focussing spectrometer
d) Time of flight analyser
A
b) Frequency sweep analyser
20
Q
- Which of the following is not a type of ion detector used in mass spectrometers?
a) Electron multiplier
b) Flame emission detector
c) Faraday cup collector
d) Photographic plates
A
b) Flame emission detector
21
Q
- Under which of the following temperatures is the
ionisation chamber maintained?
a) 100oC
b) 200oC
c) 300oC
d) 400oC
A
c) 300oC
22
Q
- Which of the following is used to inject liquid samples?
a) Hypodermic needle
b) Glass bulb
c) Capillary tube
d) Curvette
A
a) Hypodermic needle
23
Q
- Which of the following is not a characteristic of
nebulizers that are commonly used?
a) Low cost
b) Low uptake rate
c) High efficiency
d) High uptake rate
A
d) High uptake rate
24
Q
- In glow discharge ion source, the sample is atomised by which of the following process?
a) Evaporation
b) Sputtering
c) Heating
d) Annealing
A
b) Sputtering
25
Q
- Which of the following produces the electron beam in magnetic deflection mass spectrometer?
a) Tungsten filament
b) Quartz rod
c) Silica
d) Rhodium filament
A
a) Tungsten filament
26
Q
- In magnetic deflection mass spectrometer, in which of the following ways is acceleration applied to the direction of motion?
a) In random manner
b) Parallel to it
c) Perpendicular to it
d) Along it
A
c) Perpendicular to it
27
Q
- Which of the following separate the ions according to their mass-to-charge?
a) Ion source
b) Detector
c) Magnetic sector
d) Electric sector
A
c) Magnetic sector
28
Q
- The electric sector field is not subject to hysteresis.
a) True
b) False
A
a) True
29
Q
- Direct focussing is obtained by deflecting the ion beam along a _________ trajectory through the magnetic field.
a) 120o
b) 150o
c) 190o
d) 180o
A
d) 180o
30
Q
- Mattauch-Herzog geometry involves a deflection of
which of the following radians in a radial electrostatic field analyser?
a) √2Π
b) Π/2
c) Π/3√4
d) Π/4√2
A
31
Q
- Which of the following leads to the limitation of
resolution?
a) All ions do not have same energy
b) All ions do not have same charge
c) All ions are not of the same size
d) All ions do not have the same charge
A
d) All ions do not have the same charge
32
Q
- Which of the following components need to be added in order to increase the resolution?
a) Ion source
b) Detector
c) Magnetic sector
d) Electric sector
A
a) Ion source
33
Q
- Which of the following is commonly varied in magnetic deflection mass spectrometer?
a) Electric sector
b) Magnetic fold strength
c) Magnetic constant
d) Electric constant
A
b) Magnetic fold strength
34
Q
- Nier-Johnson geometry involves a deflection of which of the following radians in a radial electrostatic field analyser?
a) Π
b) Π/2
c) Π/3
d) Π/4
A
b) Π/2
35
Q
- An accuracy of 1 part in 102 has been obtained in
precision mass measurements.
a) True
b) False
A
b) False
36
Q
- Which of the following is not a component of the time of flight analyser spectrometer?
a) Ion source
b) Field free separation region
c) Electron multiplication region
d) Photo tube
A
37
Q
- Which of the following is not a component of the time of flight analyser spectrometer?
a) Ion source
b) Field free separation region
c) Electron multiplication region
d) Photo tube
A
a) Ion source
38
Q
- Which of the following is not an advantage of mass
spectrometer?
a) Simple
b) Rugged
c) High sensitivity
d) Unlimited mass range
A
c) High sensitivity
39
Q
- All the ions entering the tube have the same kinetic
energy.
a) True
b) False
A
a) True
40
Q
- If all the ions have the same kinetic energy how are their masses related to their velocities?
a) Mass and velocity are equal
b) Mass and velocity are not related
c) Mass and velocity are directly proportional
d) Mass and velocity are inversely proportional
A
d) Mass and velocity are inversely proportional
41
Q
- Which of the following is true about time of flight
analyser spectrometers?
a) Lighter particles arrive at the detector earlier
b) Heavier particle arrive at the detector earlier
c) Lighter and heavier particles arrive together at the
detector
d) Lighter particles do not reach the detector
A
a) Lighter particles arrive at the detector earlier
42
Q
- In the time of flight mass spectrometer, ions are formed by which of the following methods?
a) Pulsed ionization method
b) Acceleration method
c) Dynamic method
d) Ion excitation method
A
a) Pulsed ionization method
43
Q
- The evacuated tube is also known as which of the
following?
a) Pulse tube
b) Detector tube
c) Drift tube
d) Acceleration tube
A
c) Drift tube
44
Q
- The current produced by ions arriving at the collector necessitates the use of which of the following?
a) Wide band amplifier
b) Narrow band amplifier
c) Wide band filter
d) Narrow band filter
A
a) Wide band amplifier
45
Q
- Which of the following is an ion optic device in which ions pass through a mirror and their flight is reversed?
a) Reversal device
b) Reflectron
c) Mirror arrangement
d) Separation chamber
A
b) Reflectron
46
Q
- Which of the following statements about mass
spectrometers are not true?
a) Time of flight mass spectrometer has the ability to
record the entire mass spectrum at a time
b) Time of flight mass spectrometers have poor resolution
c) Conventional spectrometer detects only one peak at a time
d) All spectrometers have the ability to record the entire mass spectrum at a time
A
d) All spectrometers have the ability to record the entire mass spectrum at a time
47
Q
- Which of the following is placed just before the detector in a radiofrequency mass spectrometer?
a) Ion source
b) Potential energy selector
c) Ionisation chamber
d) Reflectron
A
b) Potential energy selector
48
Q
- Which of the following is placed just before the detector in a radiofrequency mass spectrometer?
a) Ion source
b) Potential energy selector
c) Ionisation chamber
d) Reflectron
A
c) Ionisation chamber
49
Q
- The alternating voltage rf voltage is applied to which of the following?
a) All grids
b) Central grid
c) Alternate grids
d) None of the grids
A
b) Central grid
50
Q
- The rf spectrometer contains a magnet.
a) True
b) False
A
b) False
51
Q
- The DC ion accelerating voltage is swept from
_________
a) 0 to 50 V
b) 50 to 100 V
c) 200 to 300 V
d) 50 to 250 V
A
d) 50 to 250 V
52
Q
- In Bennet spectrometer, the rf voltage has a fixed
frequency.
a) True
b) False
A
a) True
53
Q
- The resolution of the Bennet tube can be improved by using which of the following?
a) Sine wave rf signal
b) Square wave rf signal
c) Triangular wave rf signal
d) Random signal
A
b) Square wave rf signal
54
Q
- The spurious lines can be reduced to a minimum by
using which of the following?
a) Single stage tube
b) Two stage tube
c) Three stage tube
d) Reflectron
A
c) Three stage tube
55
Q
- Which of the following is not the feature of Bennet
type spectrometer?
a) Lightweight
b) Simple
c) Absence of spurious lines
d) Moderate resolution
A
c) Absence of spurious lines
56
Q
- Which of the following is the disadvantage of using
three stage tubes?
a) Reduced resolution
b) Bulky construction
c) Complex
d) Heavy
A
a) Reduced resolution
57
Q
- Which of the following is not a feature of quadrupole mass spectrometer?
a) Low cost
b) Light weight
c) Low speed electronic scanning
d) Simple in construction
A
c) Low speed electronic scanning
58
Q
- Which of the following is not a component of
quadrupole mass filter?
a) Electrodes
b) Choke
c) DC potential
d) Detector
A
d) Detector
59
Q
- The resolving power of Bennet type spectrometer is primarily based on which of the following?
a) Distance between detector and reflectron
b) Difference between the individual rf accelerating stages
c) Length of the drift tube
d) Laser beam used
A
b) Difference between the individual rf accelerating stages
60
Q
- The mass selection scheme uses a dc potential and not a radio frequency potential.
a) True
b) False
A
b) False
61
Q
- If to one pair of electrodes one potential with one sign is applied, which of the following is applied to the other pair of electrodes?
a) Same potential with same sign
b) Different potential with same sign
c) Different potential with different sign
d) Same potential with different sign
A
d) Same potential with different sign
62
Q
- Which of the following is the heart of quadrupole
instrument?
a) Electrodes
b) Choke
c) DC potential
d) Detector
A
a) Electrodes
63
Q
- Which of the following does not affect the resolution of the instrument?
a) Changing length of electrode
b) Changing slope of scan line
c) Quality of machining of the rods
d) Changing length of drift tube
A
d) Changing length of drift tube
64
Q
- Which of the following has to be done to increase the resolution of the quadrupole mass spectrometer?
a) Increasing distance between detector and reflectron
b) Increasing difference between the individual rf
accelerating stages
c) Increasing the length of the drift tube
d) Increasing the rod length of the electrode
A
d) Increasing the rod length of the electrode
65
Q
- In cases where differentiation is required between very similar substances, which of the following techniques making use of quadrupole principle is preferred?
a) Evaporation mass spectrometry
b) Pyrolysis mass spectrometry
c) Plasma mass spectrometry
d) Trapped ion mass spectrometry
A
b) Pyrolysis mass spectrometry
66
Q
- Which of the following is used to cool the ion source?
a) Liquid sodium shield
c
c) Water
d) Freon
A
a) Curie point
67
Q
- In pyrolysis spectrometry, heating is done until which of the following is reached?
a) Curie point
b) Boiling point
c) Until production of superheated vapour
d) Until 100oC
A
a) Curie point
68
Q
- In quadrupole mass spectrometer, the ratio u/v is mass dependent, where ‘u’ is the DC voltage and ‘v’ is the peak amplitude.
a) True
b) False
A
b) False
69
Q
- When a value of q is kept constant, the value of m/e is proportional to which of the following when ‘m’ is the mass number, ‘e’ is the electric charge, ‘u’ is the DC potential, ‘v’ is the peak amplitude and ‘f’ is the
frequency?
a) u/v ratio
b) u
c) v
d) f
A
c) v
70
Q
- Which of the following is not an ion transducer or
detector?
a) Faraday cup collector
b) Channeltron
c) Micro-channel plate
d) Flame ionization detector
A
d) Flame ionization detector
71
Q
- Which of the following is similar to photo multiplier
transducer?
a) Faraday cup collector
b) Channeltron
c) Micro-channel plate
d) Electron multiplier transducer
A
d) Electron multiplier transducer
72
Q
- Which of the following is used in places where ion
currents are very low?
a) Faraday cup collector
b) Channeltron
c) Micro-channel plate
d) Electron multiplier transducer
A
d) Electron multiplier transducer
73
Q
- Discrete type electron multiplier transducers can
provide current gain upto which of the following?
a) 10^2
b) 10^5
c) 10^7
d) 10^11
A
c) 10^7
74
Q
- Continuous dynode electron multiplier transducer is a trumpet shaped device made with which of the following?
a) Glass doped with lead
b) Steel doped with bronze
c) Phosphor bronze doped with iron
d) Iron doped with calcium
A
a) Glass doped with lead
75
Q
- The potential maintained across the continuous dynode multiplier transducer is which of the following?
a) 1 to 5kV
b) 5 to 10kV
c) 2.5 to 6.2kV
d) 1.8 to 2kV
A
d) 1.8 to 2kV
76
Q
- Which of the following are true about dynodes used in discrete dynode electron multiplier?
b) Successive dynodes are held at lower potential
c) Successive dynodes are held at higher potential
d) All dynodes are held at very low potential
A
c) Successive dynodes are held at higher potential
77
Q
- Which of the following is the least sensitive ion
detector?
a) Faraday cup collector
b) Channeltron
c) Micro-channel plate
d) Electron multiplier transducer
A
a) Faraday cup collector
78
Q
- Which of the following are not the characteristics of an electron multiplier transducer?
a) Rugged
b) Reliable
c) Microsecond of response time required
d) High current gain
A
c) Microsecond of response time required
79
Q
- In which of the following detectors, the collector is
placed in an inclined manner?
a) Faraday cup collector
b) Channeltron
c) Micro-channel plate
d) Electron multiplier transducer
A
a) Faraday cup collector
80
Q
- Photographic plates have greater sensitivity and
resolution than electron multipliers.
a) True
b) False
A
a) True
81
Q
- Photographic plates are coated with which of the
following?
a) Lead
b) Quartz
c) Silver bromide
d) Mercuric sulphate
A
c) Silver bromide
82
Q
- Which of the following detectors are well suited for
spark source instruments?
a) Faraday cup collector
b) Photographic plates
c) Micro-channel plate
d) Electron multiplier transducer
A
b) Photographic plates
83
Q
- Which of the following detectors consist of an array of glass capillaries?
a) Faraday cup collector
b) Photographic plates
c) Micro-channel plate
d) Electron multiplier transducer
A
c) Micro-channel plate
84
Q
- Which of the following detectors can be used for ions with short life time?
a) Faraday cup collector
b) Photographic plates
c) Micro-channel plate
d) Electron multiplier transducer
A
b) Photographic plates
85
Q
- ICP’s principle is similar to which of the following?
a) Flame emission spectroscopy
b) Fourier transforms spectroscopy
c) Atomic emission spectroscopy
d) Absorption spectroscopy
A
c) Atomic emission spectroscopy
86
Q
- ICP is used to analyse samples in which of the following states?
a) Solids
b) Liquids
c) Gases
d) Solids and liquids
A
d) Solids and liquids
87
Q
- Solid samples are introduced into the ICP spectrometer using which of the following?
a) Nebulizer
b) Curvette having glass windows
c) Probe
d) Laser ablation system
A
d) Laser ablation system
88
Q
- Liquid samples are introduced into the ICP spectrometer using which of the following?
a) Nebulizer
b) Curvette having glass windows
c) Probe
d) Laser ablation system
A
a) Nebulize
89
Q
- Atomisation or ionisation occurs at which of the
following conditions?
a) Vacuum pressure
b) Atmospheric pressure
c) Low pressure
d) High pressure
A
d) High pressure
90
Q
- Ions flow is pumped into the vacuum system using
which of the following?
a) Orifice
b) Nozzle
c) Venturi meter
d) Dall tube
View Answer
A
a) Orifice
91
Q
- Which of the following is not the characteristic of ICP
spectrometer?
a) Easy sample introduction
b) It can trace multiple elements
c) High detection limits
d) Accurate
A
c) High detection limits
92
Q
- ICP spectrometer is a sequential multi-element analyser that has scan times less than ____ for one sweep.
a) 10ms
b) 20ms
c) 50ms
d) 100ms
A
b) 20ms
93
Q
- Double focussing section analysers offer better
resolution than ICP spectrometry system.
a) True
b) False
A
a) True
94
Q
- The most common type of ion detector found in ICP system is which of the following?
a) Faraday cup collector
b) Channeltron
c) Micro-channel plate
d) Flame ionization detector
A
b) Channeltron
95
Q
- Which of the following is the most accurate method of determination of elemental composition?
a) Spectroscopy
b) Isotope dilution
c) Isobar dilution
d) Chromatography
A
b) Isotope dilution
96
Q
- Which of the following is the disadvantage of ICP mass spectroscopy?
a) Incapable of multi-element analysis
b) Less sensitivity
c) Impossible to obtain isotopic information
d) Not useful for detection of non-metals
A
d) Not useful for detection of non-metals
97
Q
- The isobaric interference is not caused in which of the following elements?
a) Argon
b) Oxygen
c) Helium
d) Nitrogen
A
c) Helium
98
Q
- Which of the following is the most sensitive of the
spectral methods?
a) Absorption spectroscopy
b) Mass spectroscopy
c) Flame emission spectroscopy
d) Atomic emission spectroscopy
A
b) Mass spectroscopy
99
Q
- Which of the following is the disadvantage of gas
chromatography?
a) It is not a good method
b) It cannot be used for qualitative analysis
c) It cannot be used for the separation of volatile
components
d) It does not provide direct identification
A
d) It does not provide direct identification
100
Q
- Cold tray is provided for liquid N2 or CO2 but is used only for extremely small samples.
a) True
b) False
A
a) True
101
Q
- Which of the following is most often used in the
chromatograph in gas chromatograph MS?
a) Curvette
b) Paper support
c) Capillary tube
d) Flask
A
c) Capillary tube
102
Q
- GC- MS has been developed for which of the following systems?
a) Packed column
b) Open tubular column
c) Capillary column
d) Porous layer column
A
a) Packed column
103
Q
- Which of the following problems occur when combining gas chromatography and mass spectroscopy?
a) Difference in operating pressures
b) Reduction in sensitivity
c) Direct identification is not possible
d) It does not permit direct introduction of the effluent
A
a) Difference in operating pressures
104
Q
- The carrier gas with low molecular weight would diffuse at a higher rate than the higher molecular weight sample.
a) True
b) False
A
a) True
105
Q
- Which of the following is the type of separator used in commercial GC-MS systems?
a) Jet type molecular separator
b) Porous tube
c) Teflon tube
d) Flow type separator
A
a) Jet type molecular separator
106
Q
- The system for measurement of ion intensity in GS-MS system consists of which of the following?
a) Electrometer
b) Ion meter
c) Ion transducer
d) Intensity meter
A
a) Electrometer
107
Q
- The system for measurement of ion intensity in GS-MS system consists of which of the following?
a) Band pass amplifier
b) Narrow band amplifier
c) Wide band amplifier
d) Low pass amplifier
A
c) Wide band amplifier
108
Q
- Introduction of total HPLC effluent into MS is feasible.
a) True
b) False
A
b) False
109
Q
- The gas burden from conventional LC flow rates creates nearly _____ times more gas than cryo-pumped vacuum system can handle.
a) 5
b) 10
c) 20
d) 40
A
c) 20
110
Q
- Which of the following should be in a position to split the effluent?
a) Interface
b) Ion source
c) Makeup gas
d) Microbore
A
a) Interface
111
Q
- Which of the following is the most commonly used
interface?
a) Nebulizer
b) Chopper
c) Filter
d) Vapourising chamber
A
a) Nebulizer
112
Q
- Only ______ percent of the effluent of the liquid
chromatography must be introduced in the mass
spectrometer.
a) 1-2 %
b) 1-5 %
c) 1-20 %
d) 1-15%
A
b) 1-5 %
113
Q
- Which of the following is the normal nebuliser
temperature used in LC mass spectrometry?
a) 50-100oC
b) 100-200oC
c) 125-150oC
d) 150-200oC
A
c) 125-150oC
114
Q
- The ions are focussed and de-clustered through which of the following regions?
a) Dry helium region
b) Wet oxygen region
c) Wet chlorine region
d) Dry nitrogen region
A
d) Dry nitrogen region
115
Q
- The ions are passed into the high vacuum analyser
through which of the following?
a) Orifice
b) Nozzle
c) Nebulizer
d) Venturi tube
A
a) Orifice
116
Q
- Using an interface would reduce detection limit and
sensitivity.
a) True
b) False
A
a) True
117
Q
- Gas burden from conventional LC flow rates is which of the following?
a) 1ml/min of water produces 1.2 l/mm of gas
b) 1ml/min of water produces 2.4 l/mm of gas
c) 2ml/min of water produces 3.2 l/mm of gas
d) 1ml/min of water produces 4.2 l/mm of gas
A
a) 1ml/min of water produces 1.2 l/mm of gas
118
Q
- Tandem mass spectroscopy combines which of the
following devices?
a) Mass spectrometer and gas-solid chromatograph
b) Mass spectrometer and gas-liquid chromatograph
c) Mass spectrometer and gas chromatograph
d) Mass spectrometer and mass spectrometer
A
d) Mass spectrometer and mass spectrometer
119
Q
- In tandem spectroscopy, the first stage sepatation
device is a mass spectrometer.
a) True
b) False
A
a) True
120
Q
- Which of the following is used to separate a single mass that is characteristic of a given analyte in a mixture?
a) First mass spectrometer
b) Second mass spectrometer
c) Filter
d) Precursor
A
a) First mass spectrometer
121
Q
- The mass-selected ions are activated in which of the
following ways that cause them to fall apart to produce product ions?
a) Collisional activation
b) Evaporational activation
c) Inert gas activation
d) Thermal activation
A
a) Collisional activation
122
Q
- The final MS/MS spectrum consists only of product ions from the selected precursor.
a) True
b) False
A
a) True
123
Q
- In reverse-geometry mass spectrometer which of the following precedes the electric sector?
a) Nebulizer
b) Orifice
c) Magnetic sector
d) Mass spectrometer
A
c) Magnetic sector
124
Q
- A magnetic sector alone can be used as a mass
spectrometer, with roughly _____ resolution.
a) Low
b) High
c) Unit
d) Infinite
A
c) Unit
125
Q
- What does the acronym ‘MIKES’ stand for?
a) Mass-analysed ion kinetic energy spectrometer
b) Mass-based induced kinetic energy spectrometer
c) Mass invasive kinetic electric spectrometer
d) Mass-analyser in a kinetic energy-type spectrometer
A
a) Mass-analysed ion kinetic energy spectrometer
126
Q
- In MIKES experiments which of the following are
measured?
a) Product ions
b) Product ion kinetic energies
c) Product ions mass to charge ratio
d) Product ions masses
A
b) Product ion kinetic energies
127
Q
- All ions with the same number of charges will have
__________
a) Same kinetic energy
b) Different kinetic energies
c) Same mass
d) Different mass
A
a) Same kinetic energy
128
Q
- A tandem mass spectrometer has which of the
following analysers?
a) Time of flight mass analyser
b) Magnetic deflection analyser
c) Radiofrequency analyser
d) Quadrupole analyser
A
a) Time of flight mass analyser
129
Q
- Which of the following filters are used in tandem
spectrometer?
a) Quadrupole mass filter
b) Low energy filter
c) High energy filter
d) Time of flight mass filter
A
a) Quadrupole mass filter
130
Q
- B/E scan is which of the following scans?
a) Product ion scan
b) Precursor ion scan
c) Mass scan
d) Charge scan
A
a) Product ion scan
131
Q
- Which of the following is located in the region
between two analysers?
a) Nebuliser
b) Collision cell
c) Filter
d) Vacuum chamber
A
b) Collision cell
