Benzoic Acid IR 103 100 95 90 2834.7 b .%T 85 em-1, 84.10%T 80- 1453.30cm-1, 81.46%T 1421.76cm-1 77,86%T 75 933.50cm-1, 74.15%T 70 1324.4sem-1, 71.48%T 65 1683.21cm-1, 64.11T 0oem-1, 63.27%T 60 55 50 47 4000 705.8scm-1, 48.49%T 3500 3000 2500 2000 1750 1500 1250 1000 700 cm-1 1%

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A: Correct molecule will be  CH3-CH2-CH2-NO2

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Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.