Spectroscopy, Multiple choice Questions Part-II B.Sc. Third year (UG degree course) Semester Fifth, Physical chemistry paper-XIII

 B.Sc. Third year (UG degree course) Semester Fifth, Physical chemistry paper-XIII

Chapter - Spectroscopy,

Multiple choice Questions

1. Radiation source for visible radiation is

a) Tungsten lamp

b) Nearnst glower

c)  Hydrogen lamp

d) None of these

2. Sample holder for IR spectroscopy made up of

a) NaCl

b) PMMA

c)  Glass

d) Quartz

3. Which of the following used as wavelength selector in spectroscopy

a)  Prism

b) Diffraction grating

c) Both a and b

d) None of these

4. Photon detector used in Infra red region

a) Thermocouple

b) Photographic plate

c)  Photomultiplier tube

d) Human eye

5. NMR observed in the region

a)  UV

b) Radiofrequency

c)  Microwave

d) X-ray

6. The correct order of different types of energies is __________
      a) E_el >> E_vib >> E_rot >> E _tr
      b) E_el >> E_rot >> E_vib >> E _tr
      c) E_el >> E_vib >> E_tr >> E _rot
      d) E_tr >> E_vib >> E_rot >> E _el

7. Presence of a functional group in a compound can be established by using ___
     a) Chromatography
     b) IR spectroscopy
     c) Mass spectroscopy
     d) X-ray diffraction

8. Which of the following is not IR vibrational mode

a)  Stretching

b) Scissoring

c)  Rocking

d) Rolling

9. Which of the following components of monochromator is the dispersing element?

a)  The collimating lens

b) The entrance slit

c) The diffraction grating

d) none of these

10. Which of the following molecule shows microwave spectra?

a) H₂O

b) CO₂

c)  H₂

d) Cl₂

11.The various energy levels of rotational spectroscopy given by

a) 2B,6B, 12B….

b) 2B,4B, 6B,8B…..

c)  1B,2B,3B,4B…

d) 4B,6B,8B,9B…

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