MPT-2031

Which of the following statement is false for mass spectroscopy?

• Mass spectroscopy is used to identify unknown compounds within a sample, and to elucidate the structure and chemical properties of different molecules

• Particle are characterized by their mass to charge ratios (m/z) and relative abundances

• This technique basically studies the effect of ionizing energy on molecules

• This technique can be used on all state of matter

Which of the following main component of mass spectroscopy deal with resolving the ions into their characteristics mass components according to their mass-to-charge ratio?

• Ion Source

• Analyzer

• Detector System

• Analyzer tube

In which state of matter mass spectroscopy is being performed?

• solid

• liquid

• gaseous

• plasma

What are the main criteria on which mass spectrometer used for?

• Composition in sample

• Relative mass of ions

• Concentration of elements in the sample

• Properties of sample

Which species of the following is used to bombard with the sample for which mass spectroscopy has been performed?

• Alpha particles

• Neutrons

• Electrons

• Protons

Separation of ions in mass spectrometer take place on the basis of which of the following?

• Mass

• Charge

• Molecular weight

• Mass to charge ratio

Which type of ionic species are allowed to pass through the slit and reach the collecting plate?

• Negative ions of all masses

• positive ions of the specific mass

• Negative ions of the specific mass

• Positive ions of all masses

Which one of the following statements is incorrect?

• parent ions are not always observed in the mass spectra of compounds

• mass spectrometry gives information about fragmentation patterns

• isotopic distribution patterns are observed in mass spectra

• mass spectrometry provides direct structural data

The base peak in a mass spectrum is

• the lowest mass peak

• The peak corresponding to the parent ion

• The peak set to 100% relative intensity

• the highest mass peak

In mass spectrometer, the ions are sorted out in which of the following ways?

• By accelerating them through electric field

• By accelerating them through magnetic field

• By accelerating them through electric and magnetic field

• By applying a high voltage