Q. Identification of presence of certain groups in a molecule is aided by use of

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Q. Fundamental oscillations occurring at low wavenumbers give

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Q. Variation in absorption against wavelength can be plotted on

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Q. Absorption frequency for example of carbon-hydrogen bond in a terminal group as compared to chain is

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Q. Fundamental oscillations giving strong absorptions can be studied in

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Q. Advantage of infrared absorption is that it is influenced by all the

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Q. Because of influence of surroundings, absorption may occur in

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Q. Absorption bands in infrared spectrum of nylon are characteristics of

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Q. Molecular information cannot be obtained from

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Q. Polarized infrared is also used to find direction in which a particular group points in

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Q. Technique in which material is exposed to vapors of heavy water is applied to

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Q. Raman spectroscopy has become an important tool for studying fibre structure because of the

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Q. Characteristic spectrum helps in determining presence of

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Q. Wavenumber at which absorption normally occurs depends on the

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Q. Use of Raman spectroscopy in study of aramid, polyester and carbon fibre is provided by

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Q. Photons that are in elastically scattered gives results to

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Q. At higher wavenumbers, near optical frequency, absorptions occur due to the

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Q. In shorter chain paraffin hydrocarbons, double peak is found in

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Q. Fundamental oscillations occur at wavenumbers less than

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Q. Frequency of photons shifts electrons from one state to another in

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