Explain the origin of Raman spectrum in terms of quantum theory of radiation. State the 'Rule of mutual exclusion'. What is its significance?

What are monochromators? Describe the working of a grating monochromator. In what way is the standard addition method of calibration in UV-VIS spectrophotometry better than the standard solution method?

The transmittance of a solution, containing 7.3 mg of an potassium dichromate per 100 cm³, taken in a cuvette of path length of 1 cm is measured at 455 nm. If the percentage transmittance found to be 6, calculate the molar absorptivity of the oxidizing agent.

Define electromagnetic radiation in terms of the wave mechanical model. Compute the energy of a photon corresponding to 102.6 MHz frequency.

Define electromagnetic radiation in terms of the wave mechanical model. Compute the energy of a photon corresponding to 102.6 MHz frequency.

 Define electromagnetic radiation in terms of the wave mechanical model. Compute the energy of a photon corresponding to 102.6 MHz frequency.

 Define electromagnetic radiation in terms of the wave mechanical model. Compute the energy of a photon corresponding to 102.6 MHz frequency.

 Write the Ilkovic equation and mention the meaning of each of the terms used in it. 

 Write the Ilkovic equation and mention the meaning of each of the terms used in it. 

Discuss the working of a Scintillation Detector. 

Discuss the working of a Scintillation Detector. 

Discuss the working of a Scintillation Detector. 

Give advantages and limitations of NAA technique. 

At 291 K, the conductivity of pure water is 4.3×10⁻⁶ S m⁻¹. Calculate the ionic product of pure water at 291 K. 
Hint: consult Table 4.2 for the limiting ionic conductivity of H⁺ and OH⁻ ions.

Draw a DTA Curve for CaC₂O₄·H₂O. Give the interpretations of different peaks exist in the thermogram. 

An impure sample of CaC₂O₄·H₂O is analyzed using TGA technique. TG Cure of the sample indicates the total mass change from 85 mg to 30.7 mg when this sample was healed up to 900° C. Calculate the % purity of the sample. 

 List the advantages of DTA and DSC over TGA. 

How would you analyze a mixture of Ca, Sr, and Ba oxalates using thermogravimetry? Draw a thermogram for the decomposition of Ca, Sr and Ba oxalates.

How would you analyze a mixture of Ca, Sr, and Ba oxalates using thermogravimetry? Draw a thermogram for the decomposition of Ca, Sr and Ba oxalates.

Conductivity of 1.6 × 10⁻² mol dm⁻³ acetic acid is 0.0215 S m⁻¹. Calculate the degrees of dissociation and the dissociation constant of acetic acid. You may consult Table 4.2 for the limiting ionic conductivities of the hydrogen and acetate ion.