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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Q. Presence of substances in a mixture can be identified by observing

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Q. In Raman spectroscopy, greater complication of interaction provides more

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Q. Variation in absorption spectrum with polarization direction can be used to investigate degree of

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Q. At higher wavenumbers and weaker absorptions material that can be studied should be

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Q. Reciprocal of wavelength is

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Q. While plotting variation in absorption and wavelength, point where frequency of electromagnetic waves corresponds to natural frequency of vibration, is called as

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Q. Regions accessible to heavy water are

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Q. With help of infrared absorption, important thing that can be determined is

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Q. Polyethene has a strong double peak at

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Q. Effects of photon energy are manifestated in

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Q. In infrared spectroscopy, radiation absorbed at certain frequencies yield structural information having wavelengths between

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