Spectral Method Analysis

Question 1

Spectroscopy deals with interaction of electromagnetic radiation with matter. What is the speed of this radiation in vacuum in m/s?
a) 6 x 10^8
b) 5 x 10^8
c) 7 x 10^8
d) 3 x 10^8

Answer 1

d) 3 x 10^8

Question 2

Which type of Quantum Transition takes place in Ultra Violet and Visible spectroscopy?
a) Rotation of molecules
b) Nuclear
c) Bonding electrons
d) Spin of nuclei in a magnetic field

Answer 2

c) Bonding electrons

Question 3

Which of the following is not a property or parameter of electromagnetic radiation?
a) Wavelength
b) Voltage
c) Wave number
d) Amplitude

Answer 3

b) Voltage

Question 4

Which of the following is not a type of Spectroscopy?
a) Gamma ray
b) X ray
c) Nuclear magnetic resonance
d) Sound

Answer 4

d) Sound

Question 5

Electromagnetic radiation can travel through a vacuum.
a) True
b) False

Answer 5

a) True

Question 6

Which of the following is false about the wavelengths of electromagnetic radiation?
a) Radiation with short wavelengths have high energies
b) Energy does not depend on wavelength
c) Radiation with long wavelengths have low energies
d) Energy depends on wavelength

Answer 6

b) Energy does not depend on wavelength

Question 7

Which of the following is the wavelength of microwave radiation?
a) 10 – 780nm
b) 0.78 – 30µm
c) 0.6 – 10 m
d) 0.75 – 3.75 mm

Answer 7

d) 0.75 – 3.75 mm

Question 8

How is the wave number of electromagnetic radiation related to wavelength?
a) It is the reciprocal of wavelength
b) It is directly proportional to wavelength
c) It is not related to wavelength
d) It is equal to wavelength

Answer 8

a) It is the reciprocal of wavelength

Question 9

Which of the following is the wavenumber of UV and Visible radiation?
a) 1 x 10^6 to 1.3 x 10^4 m-1
b) 1 x 10^6 to 1.3 x 10^4 m
c) 13 – 27 m-1
d) 1 x 10^6 to 1.3 x 10^4 m2

Answer 9

a) 1 x 10^6 to 1.3 x 10^4 m-1

Question 10

Velocity of electromagnetic radiation is more in a vacuum than in any medium.
a) True
b) False

Answer 10

a) True