In the forensic laboratory some samples are being examined under ultraviolet ray, the doctor notices blue white color of the sample. Which is the most probable content of the sample
**Core Concept**
The forensic examination under ultraviolet (UV) light is based on the principle of fluorescence, where certain substances emit light at a longer wavelength when excited by UV radiation. This phenomenon is utilized to identify and distinguish between various substances, including biological and chemical markers.
**Why the Correct Answer is Right**
The blue-white color observed under UV light is typically indicative of **fluorescein**, a fluorescent compound that exhibits a characteristic blue-white fluorescence when exposed to UV radiation. This is due to the presence of a benzene ring and a hydroxyl group in the molecule, which allows it to absorb light at a specific wavelength and emit light at a longer wavelength, resulting in the observed fluorescence.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided.
* **Option B:** This option is not provided.
* **Option C:** This option is not provided.
* **Option D:** This option is not provided.
**Clinical Pearl / High-Yield Fact**
When analyzing forensic samples under UV light, it's essential to note that different substances exhibit distinct fluorescence patterns, which can aid in identification. In this case, the blue-white color of the sample suggests the presence of a fluorescent compound like fluorescein.
**Correct Answer:** C.