Question

Match the LIST-I (Spectroscopy) with LIST-II (Application) 

LIST-I	LIST-II
A. Visible light spectroscopy	III. Identification on the basis of color
B. Fluorescence spectroscopy	IV. Identification on the basis of fluorophore present
C. FTIR spectroscopy	I. Identification on the basis of absorption in infrared region
D. Mass Spectroscopy	II. Identification on the basis of m/z ion

• A. A - IV, B - III, C - II, D - I
• B. A - I, B - II, C - III, D - IV
• C. A - III, B - IV, C - I, D - II
• D. A - III, B - IV, C - I, D - II

Hint:

Associate the technique with its core principle:

\textbf{Visible Light} \(\rightarrow\) \textbf{Color}
\textbf{Fluorescence} \(\rightarrow\) \textbf{Fluorophore}
\textbf{Infrared (FTIR)} \(\rightarrow\) \textbf{Infrared Absorption}
\textbf{Mass Spec} \(\rightarrow\) \textbf{Mass/Charge (m/z)}

Answer 1

The Correct Option is C

Let's match the analytical technique with the principle of its application.
A. Visible light spectroscopy: This technique measures the absorption of light in the visible part of the spectrum. The absorption of visible light is what gives a substance its color. So, A matches with III.
B. Fluorescence spectroscopy: This technique excites a molecule with light of a specific wavelength and measures the emitted light (fluorescence). It is used to identify and quantify substances that are fluorescent (fluorophores). So, B matches with IV.
C. FTIR spectroscopy: Fourier Transform Infrared (FTIR) spectroscopy identifies chemical bonds in a molecule by measuring their absorption of infrared radiation. So, C matches with I.
D. Mass Spectroscopy: This technique ionizes molecules and separates them based on their mass-to-charge ratio (m/z). So, D matches with II.
The correct set of matches is A-III, B-IV, C-I, D-II. Both options (3) and (4) list this correct combination.