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Indian Forest Service (Mains)

Chemistry optional

  • 2 papers
  • 200 marks each
  • 3 h per paper

Paper II covers organic chemistry and spectroscopy.

Indian Forest Service (Mains), Chemistry optional · 2024 · Paper II

Q5(f). IR comparison of two secondary amides

Question

Distinguish acetanilide and N-methylbenzamide by IR spectroscopy.

Answer in brief

Both show secondary-amide N–H and amide bands; distinguish their carbonyl environment and fingerprint pattern, rather than claiming that only one has N–H.

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Topic notes: IR spectroscopy: group frequencies, carbonyl stretching and hydrogen bonding, with every Civil Services, IFoS and Geo-Scientist PYQ →

CoversIR spectroscopy amidesacetanilideN-methylbenzamideamide I bandcarbonyl stretching frequency

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