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______ exhibits strong amide I (1650 cm⁻¹) and amide II (1550 cm⁻¹) bands.

Primary advantage of ATR–FTIR for viscous oils and fibers:

A library match must always be visually confirmed.

Amide I bands are mainly C=O stretching vibrations.

Which spectra indicate a C=O functional group? (Select all that apply.)

When analyzing unknown organic liquids, which step ensures valid background correction?

The presence of aromatic overtones near 2000–1600 cm⁻¹ confirms:

The broad band from 3000–2500 cm⁻¹ in acids is due to _______________ O–H stretching.

Proper steps before analysis include: (Select all that apply.)

Polypropylene shows a strong ester band.