Question

which of the following can be used to separate a mixture of photosynthetic pigments found in plants cells?
microscope
spectrophotometer
sonography
paper chromatography

Explanation:

• A microscope is used for visualizing small objects, not for separating mixtures.
• A spectrophotometer measures light absorption, not for separation.
• Sonography uses ultrasound for imaging, not relevant here.
• Paper chromatography is a technique that can separate mixtures based on the different solubilities and affinities of components for the mobile and stationary phases. Photosynthetic pigments in plant cells can be separated using this method.

Answer:

Paper chromatography.