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CSIR NET 2022 | Chemical Science | Molecular Spectroscopy | (29 October 2022)

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Question 1

The number of vibrational degree of freedom in the molecules CF4, SO2, H2O2 are respectively.

Question 2

The value of is:

Question 3

The anharmonicity constant of the certain reaction is 0.0025 and the depth of the potential curve is 30,000. Calculate the energy required for second overtone (in cm-1).

Question 4

The pure rotational (microwave) spectrum of the gaseous molecule CN consists of a series of equally spaced lines separated by a distance of 3.7978 cm­–1. Calculate the internuclear distance (i.e., equilibrium bond length) of the molecule. The molar masses are: 12C = 12.011 mol–1 and 14N = 14.007 g mol–1.

Question 5

Which of the following radiation is responsible for Rotational Raman Spectroscopy?
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