Origin of Spectrum Flashcards

1
Q

The analysis of electromagnetic radiation scattered, absorbed or emitted by the
molecule is called __________
a) Kaleidoscopy
b) Astronomy
c) Spectroscopy
d) Anatomy

A

c) Spectroscopy

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2
Q

The energy level with lower energy is called __________
a) Ground state energy level
b) Initial state energy level
c) Excited state energy level
d) All of the mentioned

A

a) Ground state energy level

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3
Q

Absorption spectrum results when an electron in an atom undergoes a transition
from __________
a) Higher energy level to a lower one
b) Lower energy level to a higher one
c) Intermediate levels
d) All of the mentioned

A

b) Lower energy level to a higher one

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4
Q

The energy of a photon is given by __________
a) h/ν
b) ν/h
c) 1/hν
d) hν

A

d) hν

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5
Q

Select the incorrect statement from the following option.
a) Emission spectrum results when an electron in an atom undergoes a transition from excited state to the ground state
b) In the emission spectrum, transition takes place with the emission of a photon of energy hν
c) In the emission spectrum, transition takes place with the absorption of a photon of energy hν
d) All of the mentioned

A

c) In the emission spectrum, transition takes place with the absorption of a
photon of energy hν

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6
Q

The spectra can be broadly classified into two categories. They are __________
a) Atomic and molecular spectra
b) Atomic and electronic spectra
c) Molecular and electronic spectra
d) None of the mentioned

A

a) Atomic and molecular spectra

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7
Q

In atomic spectroscopy, only electronic transitions are involved.
a) True
b) False

A

a) True

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8
Q

Select the correct statement from the following options.
a) Molecular spectra arises from the transition of an electron between the molecular energy levels
b) In molecular transitions, electronic, rotational and vibration transitions occurs
c) Molecular spectra is more complicated than atomic spectra
d) All of the mentioned

A

d) All of the mentioned

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9
Q

The necessary condition for absorption spectrum is that __________
a) hν should be greater than the energy difference
b) hν should be smaller than the energy difference
c) hν should be equal to the energy difference
d) none of the mentioned

A

c) hν should be equal to the energy difference

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10
Q

Spectroscopy deals with the transition that a molecule undergoes on the absorption of suitable radiations determined by quantum mechanical selection
rules.
a) True
b) False

A

a) True

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