Mass Spectrometry Quiz

1.
List these compounds according to their increasing mass: hydrazine (H4N2), oxygen (O2), methanol (CH4O).
- Hydrazine, oxygen, methanol
- Methanol, hydrazine, oxygen
- Oxygen, methanol, hydrazine
Your answer:

Correct answer:

The monoisotopic masses of these compounds are 31.989829 Da (oxygen), 32.026215 Da (methanol), and 32.037448 Da (hydrazine).
2.
How many elements of the periodic table have only a single stable isotope?
- 0
- 15
- 26
Your answer:

Correct answer:

These so-called monoisotopic elements are beryllium, fluorine, sodium, aluminum, phosphorus, scandium, vanadium, manganese, cobalt, arsenic, rubidium, yttrium, niobium, rhodium, indium, iodine, cesium, lanthanum, praseodymium, europium, terbium, holmium, thulium, lutecium, rhenium, and gold.
3.
Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?
- Francis William Aston
- Wolfgang Paul
- John Bennett Fenn
Your answer:

Correct answer:

Aston is a 44-kilometer lunar impact crater located along the northwestern limb of the Moon. The crater was named in honor of Francis W. Aston.
4.
What ionization technique was used for the first sequencing of peptides by mass spectrometry?
- Electron ionization
- Fast atom bombardment
- Matrix-assisted laser desorption/ionization
Your answer:

Correct answer:

Mass spectrometry was used to sequence peptides for the first time in 1959 when K. Biemann described an innovative method based on the reduction of small peptides to polyamino alcohols with characteristic EI spectra. [https://doi.org/10.1021/ja01518a069]
5.
Which mass spectrometer was carried by the American spacecraft Viking 1 sent to the planet Mars in 1975?
- Double-focusing mass spectrometer
- Time-of-flight mass spectrometer
- Quadrupole mass spectrometer
Your answer:

Correct answer:

Viking 1 carried two mass spectrometers, both equipped with double-focusing analyzers and electron ionization sources. The first spectrometer with a Mattauch-Herzog geometry was designed by Alfred Nier; it was intended to analyze the upper atmosphere of Mars. The second one with a Nier- Johnson geometry was part of the GC/MS apparatus designed by Klaus Biemann. It was used to analyze the regolith and the atmosphere at the landing site.
6.
Who first reported the fragmentation after the gamma hydrogen rearrangement to an unsaturated group via a sixmembered intermediate?
- A. J. C. Nicholson
- F. W. McLafferty
- F. Tureček
Your answer:

Correct answer:

It was first reported by Australian A. J. C. Nicholson in 1954 (Trans. Faraday Soc. 50: 1067-1073). The reaction description was published five years later (Anal. Chem. 1959, 31: 82–87) by the American chemist Fred McLafferty, by whose name we now refer to the rearrangement (McLafferty rearrangement).
7.
John Zeleny was an American physicist whose work laid the theoretical foundations of electrospray ionization. He was born in 1872 into a family of immigrants from Europe. Where did his family come from?
- Slovakia
- Czechia
- Poland
Your answer:

Correct answer:

The parents of John Zelený, Antonín Zelený and Josefa Pitková, came from Křídla, a small village near Žďár nad Sázavou in Austria-Hungary (now the Czech Republic).
8.
What is the base peak in the mass spectrum?
- The peak with the greatest m/z value
- The peak from which fragments are formed
- The peak that has the greatest intensity
Your answer:

Correct answer:

The base peak is the peak with the greatest intensity among all peaks in the spectrum. The intensity of each peak in the spectrum is expressed as a percentage relative to the intensity of the base peak.
9.
Mass spectrometers known as calutrons were used for the industrial separation of uranium isotopes during the Manhattan Project. A large amount of copper was needed to make their magnetic coils. How was the highly-valued metal obtained during the war?
- By confiscating almost year-round copper production from mines in the Belgian Congo
- By purchasing discarded copper stills from the Federal distillery in Port Melbourne
- By replacing copper with silver borrowed from the West Point Bullion Depository
Your answer:

Correct answer:

During the war, copper was preferably used for the production of brass shell casings and it was not available for the construction of calutrons. The designers came up with the idea of replacing copper with silver. They borrowed about 13,300 tons of silver from the West Point Bullion Depository in West Point, NY. After the war, the silver was returned to the Treasury with virtually no loss.
10.
What is the electric charge of an ion with m/z = m?
- 1 C
- 1.602 176 634 x 10^-19 C
- 1 eV
Your answer:

Correct answer:

The particle carries one elementary charge, the value of which is 1.602 176 634 × 10⁻¹⁹ C (exactly).

Mass Spectrometry Quiz

Mass Spectrometry Quiz

Thank you for taking our quiz!

1.
List these compounds according to their increasing mass: hydrazine (H4N2), oxygen (O2), methanol (CH4O).

2.
How many elements of the periodic table have only a single stable isotope?

3.
Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?

4.
What ionization technique was used for the first sequencing of peptides by mass spectrometry?

5.
Which mass spectrometer was carried by the American spacecraft Viking 1 sent to the planet Mars in 1975?

6.
Who first reported the fragmentation after the gamma hydrogen rearrangement to an unsaturated group via a sixmembered intermediate?

7.
John Zeleny was an American physicist whose work laid the theoretical foundations of electrospray ionization. He was born in 1872 into a family of immigrants from Europe. Where did his family come from?

8.
What is the base peak in the mass spectrum?

9.
Mass spectrometers known as calutrons were used for the industrial separation of uranium isotopes during the Manhattan Project. A large amount of copper was needed to make their magnetic coils. How was the highly-valued metal obtained during the war?

10.
What is the electric charge of an ion with m/z = m?

Czech Museum
of Mass Spectrometry

Our partners

Mass Spectrometry Quiz

Mass Spectrometry Quiz

Thank you for taking our quiz!

1. List these compounds according to their increasing mass: hydrazine (H4N2), oxygen (O2), methanol (CH4O).

2. How many elements of the periodic table have only a single stable isotope?

3. Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?

4. What ionization technique was used for the first sequencing of peptides by mass spectrometry?

5. Which mass spectrometer was carried by the American spacecraft Viking 1 sent to the planet Mars in 1975?

6. Who first reported the fragmentation after the gamma hydrogen rearrangement to an unsaturated group via a sixmembered intermediate?

7. John Zeleny was an American physicist whose work laid the theoretical foundations of electrospray ionization. He was born in 1872 into a family of immigrants from Europe. Where did his family come from?

8. What is the base peak in the mass spectrum?

9. Mass spectrometers known as calutrons were used for the industrial separation of uranium isotopes during the Manhattan Project. A large amount of copper was needed to make their magnetic coils. How was the highly-valued metal obtained during the war?

10. What is the electric charge of an ion with m/z = m?

Czech Museumof Mass Spectrometry

Our partners

1.
List these compounds according to their increasing mass: hydrazine (H4N2), oxygen (O2), methanol (CH4O).

2.
How many elements of the periodic table have only a single stable isotope?

3.
Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?

4.
What ionization technique was used for the first sequencing of peptides by mass spectrometry?

5.
Which mass spectrometer was carried by the American spacecraft Viking 1 sent to the planet Mars in 1975?

6.
Who first reported the fragmentation after the gamma hydrogen rearrangement to an unsaturated group via a sixmembered intermediate?

7.
John Zeleny was an American physicist whose work laid the theoretical foundations of electrospray ionization. He was born in 1872 into a family of immigrants from Europe. Where did his family come from?

8.
What is the base peak in the mass spectrum?

9.
Mass spectrometers known as calutrons were used for the industrial separation of uranium isotopes during the Manhattan Project. A large amount of copper was needed to make their magnetic coils. How was the highly-valued metal obtained during the war?

10.
What is the electric charge of an ion with m/z = m?

Czech Museum
of Mass Spectrometry