After passing through the pre-filter, ions are passed through which of the following?

Time of flight mass spectrometer

Radiofrequency mass spectrometer

Magnetic deflection mass spectrometer

Which of the following is the energy after collision with a surface atom for a scattering angle of 90o when Eo is the energy of the incident ion, M1 is the mass of the incident ion and M2 is the mass of the target surface?

Eo(M2‚Äö√†√∂‚àö‚â•M1)/(M2+M1)

Eo(M2-M1)/(M2‚Äö√†√∂‚àö‚â•M1)

20 + Mcqs in Instrumenation Ion Spectroscopy in Analytical Instrumentation Page 1 McqOptions

1.	Which of the following is the detection limit of ISS for monolayer?
A.	10 -1 %
B.	10 -2 %
C.	10 -3 %
D.	10 -4 %
Answer» D. 10 -4 %

Discussion

2.	ISS is less sensitive than which of the following?
A.	SIMS
B.	Auger
C.	ESCA
D.	AES
Answer» B. Auger

Discussion

3.	The specificity will vary depending on the scattering gas used.
A.	True
B.	False
Answer» B. False

Discussion

4.	Which of the following is the lightest isotope used as a primary ion?
A.	He
B.	2He
C.	3He
D.	3H
Answer» D. 3H

Discussion

5.	Which of the following is the energy after collision with a surface atom for a scattering angle of 90o when Eo is the energy of the incident ion, M1 is the mass of the incident ion and M2 is the mass of the target surface?
A.	Eo(M2-M1)/(M2+M1)
B.	Eo(M2+M1)/(M2-M1)
C.	Eo(M2×M1)/(M2+M1)
D.	Eo(M2-M1)/(M2×M1)
Answer» B. Eo(M2+M1)/(M2-M1)

Discussion

6.	WHICH_OF_THE_FOLLOWING_IS_THE_LIGHTEST_ISOTOPE_USED_AS_A_PRIMARY_ION??$
A.	He
B.	<sup>2</sup>He
C.	<sup>3</sup>He
D.	<sup>3</sup>H
Answer» D. <sup>3</sup>H

Discussion

7.	ISS is less sensitive than which of the following?$
A.	SIMS
B.	Auger
C.	ESCA
D.	AES
Answer» B. Auger

Discussion

8.	The_specificity_will_vary_depending_on_the_scattering_gas_used.$
A.	True
B.	False
Answer» B. False

Discussion

9.	Which of the following is the resolution of quadrupole mass spectrometer used in SIMS?
A.	1 amu
B.	2 amu
C.	5 amu
D.	3 amu
Answer» B. 2 amu

Discussion

10.	Which of the following is the range of quadrupole mass spectrometer used in SIMS?
A.	100-200 amu
B.	200-300 amu
C.	500-1000 amu
D.	200-500 amu
Answer» D. 200-500 amu

Discussion

11.	After passing through the pre-filter, ions are passed through which of the following?
A.	Quadrupole mass spectrometer
B.	Time of flight mass spectrometer
C.	Radiofrequency mass spectrometer
D.	Magnetic deflection mass spectrometer
Answer» B. Time of flight mass spectrometer

Discussion

12.	Which_of_the_following_is_the_detection_limit_of_ISS_for_monolayer?
A.	10 <sup>-1</sup> %
B.	10 <sup>-2</sup> %
C.	10 <sup>-3</sup> %
D.	10 <sup>-4</sup> %
Answer» D. 10 <sup>-4</sup> %

Discussion

13.	ISS is sensitive to every element heavier than which of the following?
A.	Helium
B.	Hydrogen
C.	Nitrogen
D.	Neon
Answer» B. Hydrogen

Discussion

14.	Which of the following gases is not often used in ion spectroscopy?
A.	Helium
B.	Argon
C.	Nitrogen
D.	Neon
Answer» D. Neon

Discussion

15.	It is advantageous to use ions from a variety of gases.
A.	True
B.	False
Answer» B. False

Discussion

16.	Which of the following is the energy after collision with a surface atom for a scattering angle of 90^o when E_o is the energy of the incident ion, M₁ is the mass of the incident ion and M₂ is the mass of the target surface?
A.	E<sub>o</sub>(M<sub>2</sub>-M<sub>1</sub>)/(M<sub>2</sub>+M<sub>1</sub>)
B.	E<sub>o</sub>(M<sub>2</sub>+M<sub>1</sub>)/(M<sub>2</sub>-M<sub>1</sub>)
C.	E<sub>o</sub>(M<sub>2</sub>‚Äö√†√∂‚àö‚â•M<sub>1</sub>)/(M<sub>2</sub>+M<sub>1</sub>)
D.	E<sub>o</sub>(M<sub>2</sub>-M<sub>1</sub>)/(M<sub>2</sub>‚Äö√†√∂‚àö‚â•M<sub>1</sub>)
Answer» B. E<sub>o</sub>(M<sub>2</sub>+M<sub>1</sub>)/(M<sub>2</sub>-M<sub>1</sub>)

Discussion

17.	In order to obtain ISS spectra, the backscattered primary ions are sampled by which of the following?
A.	Faraday cup analyser
B.	Photographic analyser
C.	Micro-channel analyser
D.	Cylindrical mirror analyser
Answer» E.

Discussion

18.	Which of the following can be used as the detector in ion spectroscopy?
A.	Faraday cup collector
B.	Channel electron multiplier
C.	Micro-channel plate
D.	Flame ionization detector
Answer» C. Micro-channel plate

Discussion

19.	Only those electrons which are in a selected small solid angle are received in the ________ electrostatic analyser.
A.	100<sup>o</sup>
B.	127<sup>o</sup>
C.	180<sup>o</sup>
D.	263<sup>o</sup>
Answer» C. 180<sup>o</sup>

Discussion

20.	In ion spectroscopy, the positive ions are focussed on the sample at which of the following angles?
A.	20<sup>o</sup>
B.	30<sup>o</sup>
C.	45<sup>o</sup>
D.	90<sup>o</sup>
Answer» D. 90<sup>o</sup>

Discussion

Explore topic-wise MCQs in Analytical Instrumentation.

Which of the following is the detection limit of ISS for monolayer?

ISS is less sensitive than which of the following?

The specificity will vary depending on the scattering gas used.

Which of the following is the lightest isotope used as a primary ion?

Which of the following is the energy after collision with a surface atom for a scattering angle of 90o when Eo is the energy of the incident ion, M1 is the mass of the incident ion and M2 is the mass of the target surface?

WHICH_OF_THE_FOLLOWING_IS_THE_LIGHTEST_ISOTOPE_USED_AS_A_PRIMARY_ION??$

ISS is less sensitive than which of the following?$

The_specificity_will_vary_depending_on_the_scattering_gas_used.$

Which of the following is the resolution of quadrupole mass spectrometer used in SIMS?

Which of the following is the range of quadrupole mass spectrometer used in SIMS?

After passing through the pre-filter, ions are passed through which of the following?

Which_of_the_following_is_the_detection_limit_of_ISS_for_monolayer?

ISS is sensitive to every element heavier than which of the following?

Which of the following gases is not often used in ion spectroscopy?

It is advantageous to use ions from a variety of gases.

Which of the following is the energy after collision with a surface atom for a scattering angle of 90o when Eo is the energy of the incident ion, M1 is the mass of the incident ion and M2 is the mass of the target surface?

In order to obtain ISS spectra, the backscattered primary ions are sampled by which of the following?

Which of the following can be used as the detector in ion spectroscopy?

Only those electrons which are in a selected small solid angle are received in the ________ electrostatic analyser.

In ion spectroscopy, the positive ions are focussed on the sample at which of the following angles?

Which of the following is the energy after collision with a surface atom for a scattering angle of 90^o when E_o is the energy of the incident ion, M₁ is the mass of the incident ion and M₂ is the mass of the target surface?