Exam
Name___________________________________
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
1) Calculate the magnetic field that corresponds to the proton resonance frequency of 300.00 1)
MHz. The gyromagnetic ratio of the 1 H nucleus is 26,753 s -1 gauss-1 .
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
2) A nucleus with an __________ atomic number or an __________ mass number has a nuclear spin 2)
that can be observed by the NMR spectrometer.
A) even, odd B) odd, even C) even, even D) odd, odd
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
3) What three-word term is abbreviated NMR? 3)
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
4) How many nuclear spin states are allowed for the 1 H nucleus? 4)
A) 1 B) 4 C) 2 D) 3 E) 10
5) The energy difference between the allowed spin states for an 1H nucleus is __________ the strength 5)
of the external magnetic field in which it is placed.
A) exponentially related to
B) directly proportional to
C) inversely proportional to
D) logarithmically related to
E) independent of
6) 1 H nuclei located near electronegative atoms tend to be __________ relative to 1H nuclei which are 6)
not.
A) split
B) deshielded
C) resonanced
D) shielded
E) none of the above
7) Electromagnetic radiation in the __________ region is used in 1 H NMR spectroscopy. 7)
A) X-ray
B) ultraviolet
C) microwave
D) infrared
E) radio wave
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
8) __________ is commonly used as an internal reference in NMR spectroscopy; its signal is 8)
assigned d = 0 in 1 H and 13C NMR spectroscopy.
1
Name___________________________________
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
1) Calculate the magnetic field that corresponds to the proton resonance frequency of 300.00 1)
MHz. The gyromagnetic ratio of the 1 H nucleus is 26,753 s -1 gauss-1 .
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
2) A nucleus with an __________ atomic number or an __________ mass number has a nuclear spin 2)
that can be observed by the NMR spectrometer.
A) even, odd B) odd, even C) even, even D) odd, odd
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
3) What three-word term is abbreviated NMR? 3)
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
4) How many nuclear spin states are allowed for the 1 H nucleus? 4)
A) 1 B) 4 C) 2 D) 3 E) 10
5) The energy difference between the allowed spin states for an 1H nucleus is __________ the strength 5)
of the external magnetic field in which it is placed.
A) exponentially related to
B) directly proportional to
C) inversely proportional to
D) logarithmically related to
E) independent of
6) 1 H nuclei located near electronegative atoms tend to be __________ relative to 1H nuclei which are 6)
not.
A) split
B) deshielded
C) resonanced
D) shielded
E) none of the above
7) Electromagnetic radiation in the __________ region is used in 1 H NMR spectroscopy. 7)
A) X-ray
B) ultraviolet
C) microwave
D) infrared
E) radio wave
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
8) __________ is commonly used as an internal reference in NMR spectroscopy; its signal is 8)
assigned d = 0 in 1 H and 13C NMR spectroscopy.
1
