Briefly explain the origin of atomic spectrum. Explain why the atomic spectra are line spectra whereas the molecular spectra are band spectra
See Answer →Briefly explain the origin of atomic spectrum. Explain why the atomic spectra are line spectra whereas the molecular spectra are band spectra
See Answer →What is meant by room temperature phosphorescence? How is it achieved?
See Answer →What is chemiluminescence? Describe an analytical application of chemiluminescence in the area of environmental pollution measurement.
See Answer →Explain the origin of fluorescence and phosphorescence spectra in terms of Jablonski diagram. What is meant by fluorescence quenching? How does it affect the quantum yield of a fluorescence emission?
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Explain the origin of Raman spectrum in terms of quantum theory of radiation. State the 'Rule of mutual exclusion'. What is its significance?
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Explain the origin of Raman spectrum in terms of quantum theory of radiation. State the 'Rule of mutual exclusion'. What is its significance?
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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?
See Answer →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.
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Define electromagnetic radiation in terms of the wave mechanical model. Compute the energy of a photon corresponding to 102.6 MHz frequency.
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Define electromagnetic radiation in terms of the wave mechanical model. Compute the energy of a photon corresponding to 102.6 MHz frequency.
See Answer →Define electromagnetic radiation in terms of the wave mechanical model. Compute the energy of a photon corresponding to 102.6 MHz frequency.
See Answer →Define electromagnetic radiation in terms of the wave mechanical model. Compute the energy of a photon corresponding to 102.6 MHz frequency.
See Answer →Write the Ilkovic equation and mention the meaning of each of the terms used in it.
See Answer →Write the Ilkovic equation and mention the meaning of each of the terms used in it.
See Answer →Discuss the working of a Scintillation Detector.
See Answer →Discuss the working of a Scintillation Detector.
See Answer →Discuss the working of a Scintillation Detector.
See Answer →Give advantages and limitations of NAA technique.
See Answer →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.