Explore topic-wise MCQs in Analytical Instrumentation.

This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Analytical Instrumentation knowledge and support exam preparation. Choose a topic below to get started.

1.

Fluorescent X-ray spectrometers would require only moderate-intensity X-ray tubes.

A. True
B. False
Answer» C.
Discussion
2.

In X-ray fluorescence spectrometer, the relationship between the excitation intensity and the intensity of fluorescence does not depend on which of the following?

A. Spectrum of the incident radiation
B. Angle of radiance
C. Molecular weight
D. Incident angle
Answer» E.
Discussion
3.

The problem of spectral interference is not severe in X-ray spectroscopy.

A. True
B. False
Answer» B. False
Discussion
4.

Which of the following is Mosely’s equation if ‘C’ is the speed of light, ‘a’ is proportionality constant, ‘σ’ is a constant which depends on electronic transition series, ‘Z’ is the atomic number and ‘λ’ is the wavelength?

A. Cλ= a(Z-σ)2
B. C/λ= a(Z-σ)2
C. C(Z-σ)2= aλ
D. C(Z-σ)2= a/λ
Answer» C. C(Z-σ)2= aλ
Discussion
5.

The measurement of intensity of fluorescent X-rays provide a simple and ____________ way of _____________ analysis.

A. Destructive, quantitative
B. Non-destructive, quantitative
C. Destructive, qualitative
D. Non-destructive, qualitative
Answer» C. Destructive, qualitative
Discussion
6.

If the absorption of electromagnetic radiation by matter results in the emission of radiation of the same or longer wavelengths for a long time, the phenomenon is termed as which of the following?

A. Luminescence
B. Fluorescence
C. Phosphorescence
D. Spontaneous emission
Answer» D. Spontaneous emission
Discussion
7.

If the absorption of electromagnetic radiation by matter results in the emission of radiation of the same or longer wavelengths for a short time, the phenomenon is termed as which of the following?

A. Luminescence
B. Fluorescence
C. Phosphorescence
D. Spontaneous emission
Answer» C. Phosphorescence
Discussion
8.

If the absorption of electromagnetic radiation by matter results in the emission of radiation of the same or longer wavelengths for a long or a short time, the phenomenon is termed as which of the following?

A. Luminescence
B. Fluorescence
C. Phosphorescence
D. Spontaneous emission
Answer» B. Fluorescence
Discussion
9.

IN_X-RAY_FLUORESCENCE_SPECTROMETER,_THE_RELATIONSHIP_BETWEEN_THE_EXCITATION_INTENSITY_AND_THE_INTENSITY_OF_FLUORESCENCE_DOES_NOT_DEPEND_ON_WHICH_OF_THE_FOLLOWING??$

A. Spectrum of the incident radiation
B. Angle of radiance
C. Molecular weight
D. Incident angle
Answer» E.
Discussion
10.

Fluorescent_X-ray_spectrometers_would_require_only_moderate-intensity_X-ray_tubes.$

A. True
B. False
Answer» C.
Discussion
11.

The problem of spectral interference is not severe in X-ray spectroscopy?

A. True
B. False
Answer» B. False
Discussion
12.

Which of the following is Mosely’s equation if ‘C’ is the speed of light, ‘a’ is proportionality constant, ‘σ’ is a constant which depends on electronic transition series, ‘Z’ is the atomic number and ‘λ’ is the wavelength?$

A. Cλ= a(Z-σ)<sup>2</sup>
B. C/λ= a(Z-σ)<sup>2</sup>
C. C(Z-σ)<sup>2</sup>= aλ
D. C(Z-σ)<sup>2</sup>= a/λ
Answer» C. C(Z-‚âà√¨‚àö√¢)<sup>2</sup>= a‚âà√≠¬¨‚Ñ¢
Discussion
13.

The energy of the emitted X-rays depends upon the _________ of the atom and their intensity depends upon the __________

A. Atomic number, amount of sample
B. Mass number, amount of sample
C. Mass number, concentration of atoms
D. Atomic number, concentration of atoms
Answer» E.
Discussion
14.

The measurement of intensity of fluorescent X-rays provide a simple and ____________ way of _____________ analysis. Fill in the blanks.

A. Destructive, quantitative
B. Non-destructive, quantitative
C. Destructive, qualitative
D. Non-destructive, qualitative
Answer» C. Destructive, qualitative
Discussion
15.

Prompt emission of X-ray by an atom ionised by a higher energy X-ray is a type of which of the following phenomena?

A. Luminescence
B. Fluorescence
C. Phosphorescence
D. Spontaneous emission
Answer» C. Phosphorescence
Discussion
16.

If the absorption of electromagnetic radiation by matter results in the emission of radiation of same or longer wavelengths for a short time, the phenomenon is termed as which of the following?

A. Luminescence
B. Fluorescence
C. Phosphorescence
D. Spontaneous emission
Answer» C. Phosphorescence
Discussion
17.

If the absorption of electromagnetic radiation by matter results in the emission of radiation of same or longer wavelengths for a long or a short time, the phenomenon is termed as which of the following?

A. Luminescence
B. Fluorescence
C. Phosphorescence
D. Spontaneous emission
Answer» B. Fluorescence
Discussion