Q.1
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
Q.2
Who invented mass spectrometers?
  • a) J.J Thompson
  • b) Goldstein
  • c) Nikola Tesla
  • d) Aston
Q.3
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
Q.4
Mass spectrometer separates ions on the basis of which of the following?
  • a) Mass
  • b) Charge
  • c) Molecular weight
  • d) Mass to charge ratio
Q.5
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
Q.6
No two molecules will be fragmented and ionized in exactly the same manner.
  • a) True
  • b) False
Q.7
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
Q.8
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
Q.9
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
Q.10
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
Q.11
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
0 h : 0 m : 1 s