For quantitative analysis in the visible region of the spectrum, cuvets (sample holders) can be made of: (A) Quartz (B) Transparent plastic (C) Glass (D) Fused Silica
Choose the correct answer from the options given below:

Correct option is D

Explanation:
In quantitative analysis using spectrophotometry in the visible region of the electromagnetic spectrum (typically 400–700 nm), the material used for cuvets must be transparent to visible light to avoid absorption or scattering that would interfere with accurate measurement.
All the materials listed:
· Quartz (A)
· Transparent plastic (B)
· Glass (C)
· Fused Silica (D)
are transparent in the visible region and are commonly used to manufacture cuvets for visible light analysis.
Information Booster:
· Quartz and Fused Silica: Excellent transparency in UV and visible regions. Quartz is more expensive but highly durable and used when UV analysis is also needed.
· Glass: Adequate for visible region only. Not suitable for UV range (below ~350 nm).
· Plastic: Economical and disposable; suitable for visible light applications but not for UV.
Additional Information:
· Option (a): (A) Only – Incorrect. While Quartz is suitable, other materials are also valid.
· Option (b): (A) and (C) Only – Incorrect. Ignores Plastic and Fused Silica.
· Option (c): (A), (B), and (C) Only – Incorrect. Excludes Fused Silica, which is suitable.