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This section includes 20 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. |
In powder diffractometer, the sharpness of the lines is greatly determined by which of the following? |
A. | Quality of the sample, size of the slit |
B. | Quality of the slit, size of the sample |
C. | Thickness of the slit, amount of the sample |
D. | Number of slits, composition of the sample |
Answer» C. Thickness of the slit, amount of the sample | |
2. |
In Diffractometers, the intensities of the diffraction peaks of a given compound in a mixture are proportional to the fraction of the material in the mixture. |
A. | True |
B. | False |
Answer» B. False | |
3. |
In Diffractometers, line intensities depend on ______ and kind of atomic reflection centres in each set of plates. |
A. | Number |
B. | Position |
C. | Length |
D. | Distance between lines |
Answer» B. Position | |
4. |
Diffractometers are similar to which of the following? |
A. | Optical grating spectrometer |
B. | Prism spectrometer |
C. | Photo multiplier |
D. | Photovoltaic cell |
Answer» B. Prism spectrometer | |
5. |
When certain geometric requirements are met, X-rays scattered from a crystalline solid can constructively interfere with each other and produce a diffracted beam. |
A. | True |
B. | False |
Answer» B. False | |
6. |
In Diffractometer, the identification of a component of the sample from its powder diffraction pattern is based upon the _________ of lines and their relative ___________ |
A. | Number, length |
B. | Number, intensity |
C. | Position, length |
D. | Position, intensity |
Answer» E. | |
7. |
With the help of which of the following equations is the distance calculated from a known wavelength of the source and measured angle? |
A. | Coolidge equation |
B. | Bragg’s equation |
C. | Debye equation |
D. | Scherrer equation |
Answer» C. Debye equation | |
8. |
Using the powder method of diffractometers, which of the following can be determined? |
A. | Percentage of K+ |
B. | Percentage of Na+ and Cl- |
C. | Percentage of KBr and NaCl |
D. | Percentage of Br- |
Answer» D. Percentage of Br- | |
9. |
DIFFRACTOMETERS_ARE_SIMILAR_TO_WHICH_OF_THE_FOLLOWING??$ |
A. | Optical grating spectrometer |
B. | Prism spectrometer |
C. | Photo multiplier |
D. | Photovoltaic cell |
Answer» B. Prism spectrometer | |
10. |
In Diffractometers, the intensities of the diffraction peaks of a given compound in a mixture are proportional to the fraction of the material in the mixture.$ |
A. | True |
B. | False |
Answer» B. False | |
11. |
In_Diffractometers,_line_intensities_depend_on________and_kind_of_atomic_reflection_centres_in_each_set_of_plates.$ |
A. | Number |
B. | Position |
C. | Length |
D. | Distance between lines |
Answer» B. Position | |
12. |
In_powder_diffractometer,_the_sharpness_of_the_lines_is_greatly_determined_by_which_of_the_following? |
A. | Quality of the sample, size of the slit |
B. | Quality of the slit, size of the sample |
C. | Thickness of the slit, amount of the sample |
D. | Number of slits, composition of the sample |
Answer» C. Thickness of the slit, amount of the sample | |
13. |
When certain geometric requirements are met, X-rays scattered from a crystalline solid can constructively interfere with each other and produce diffracted beam? |
A. | True |
B. | False |
Answer» B. False | |
14. |
In Diffractometer, the identification of a component of the sample from its powder diffraction pattern is based upon the _________ of lines and their relative ___________. |
A. | Number, length |
B. | Number, intensity |
C. | Position, length |
D. | Position, intensity |
Answer» E. | |
15. |
With the help of which of the following equations is the distance calculated from known wavelength of the source and measured angle? |
A. | Coolidge equation |
B. | Bragg’s equation |
C. | Debye equation |
D. | Scherrer equation |
Answer» C. Debye equation | |
16. |
Which of the following is the most common instrument for photographic recording of diffraction patterns? |
A. | Debye-Scherrer powder camera |
B. | Gamma camera |
C. | Geiger tube |
D. | Scintillation counter |
Answer» B. Gamma camera | |
17. |
In powder method, the powder sample is contained in which of the following? |
A. | Thin walled glass capillary tubes |
B. | Thin walled test tube |
C. | Thin walled curvettes |
D. | Thin walled flask |
Answer» B. Thin walled test tube | |
18. |
Using powder method of diffractometers, which of the following can be determined? |
A. | Percentage of K+ |
B. | Percentage of Na+ and Cl- |
C. | Percentage of KBr and NaCl |
D. | Percentage of Br- |
Answer» D. Percentage of Br- | |
19. |
X-ray diffractometers provide ____________ information about the compounds present in a solid sample. |
A. | Quantitative |
B. | Qualitative |
C. | Quantitative and qualitative |
D. | Either quantitative or qualitative |
Answer» D. Either quantitative or qualitative | |
20. |
X-ray diffractometers are not used to identify the physical properties of which of the following? |
A. | Metals |
B. | Liquids |
C. | Polymeric materials |
D. | Solids |
Answer» C. Polymeric materials | |