How does the rule of Mutual Exclusion help in predicting the symmetry in case of  and  molecules? 

A light source of wavelength  illuminates a metal surface and electron are ejected with the maximum kinetic energy 2 eV. If the same surface is illuminated by a light source of wavelength , then calculate the maximum kinetic energy of the ejected electron. (Work function of metal is 1 eV) 

Electronic transitions are called vertical transitions. Comment. 

 Raman rotational spectra of  was observed with Hg light with Rayleigh line at . Stokes lines were observed at . Draw the rotational energy level diagram with Stokes and anti Stokes lines. 

The frequencies of the first and second overtones respectively are exactly double and triple of the fundamental vibration frequency. Comment. 

 Calculate the number of vibrational modes for a molecule of methane.

 has bond length . Calculate the wavenumbers of the first four lines in its microwave spectrum. 
[Given: mass of C=12.000 u and mass of N=14.007 u]

 The rotational Raman spectrum of a diatomic molecule has the first line of a series of Stokes and anti-Stokes lines at , relative of the  of incident light. What would be its bond length. 

 In Raman spectra, the Stokes line are more intense than the anti-Stokes lines. Why? 

Structural maintenance of chromosomes

 Dynamic behavior of microtubules

Hot spot Mutation

Modification in DNA and Hisntones

 Assuming that the force constants of H-Cl and D-Cl are the same, calculate the fundamental vibration frequency of D-Cl if that of H-Cl is . 

Write a detailed note on the Tryptophan operon.

What is meant by a selection rule? Give the selection rule for a rotating diatomic molecule modelled as a rigid rotator. 

Mention the inherited disorders of DNA repair pathways.

What information about the molecule can be obtained from a rotation spectrum? 

Distinguish between prokaryotic translations and eukaryotic translation.

Briefly discuss the basic features of the genetic code.