🦷 DAT Exam Prep

Infrared spectroscopy identifies functional groups by:

A Mass fragmentation
B Absorption of IR radiation at characteristic frequencies corresponding to bond vibrations
C UV absorption
D Nuclear spin changes

✓ Correct Answer: Option B

IR: each functional group absorbs at characteristic wavenumbers (C=O ~1700, O-H ~3300-3500, N-H ~3300). Fingerprint region is unique.

💡 Why is B) the correct answer?

The correct answer to the question "Infrared spectroscopy identifies functional groups by:" is Option B: Absorption of IR radiation at characteristic frequencies corresponding to bond vibrations.

The other options — A) Mass fragmentation, C) UV absorption, D) Nuclear spin changes — are incorrect for this DAT Exam Prep question. As explained above: IR: each functional group absorbs at characteristic wavenumbers (C=O ~1700, O-H ~3300-3500, N-H ~3300). Fingerprint region is unique.

📚 About This DAT Exam Prep Practice Question

This 2-level DAT Exam Prep question from the Organic Chemistry topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free DAT Exam Prep practice test or use flashcards for spaced repetition review.

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