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The method based on the absorption of radiation of a substance is known as ________

(a) Absorption photometry

(b) Spectrophotometry

(c) Absorption tocometry

(d) Absorption spectrophotoscopy

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The correct answer is (d) Absorption spectrophotoscopy

Explanation: Electronic transitions correspond to the ultraviolet and visible regions, vibrational transitions to the near infrared and infrared regions and rotational transitions to the infrared and far-infrared regions. The method based on the absorption of radiation of a substance is known as Absorption Spectroscopy.

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