Question

Carotene is the molecule responsible for giving carrots their orange color.
What type of spectroscopy would be best for analyzing carotene concentrations in carrot juice?

• A. UV spectroscopy.
• B. IR spectroscopy.
• C. Mass spectroscopy.
• D. Photoelectron spectroscopy.

Answer 1

The correct option is A UV spectroscopy.

Spectroscopy that involves electronic transition in UV-visible region of the electromagnetic spectrum is used for colored molecules. Therefore UV spectroscopy will be used for Carotene molecule.

IR spectroscopy involves vibration energy transition, mass spectroscopy determines the molecular mass of the molecule and PES is applied to metal surfaces.

thus option A is correct