In a dye molecule, the unsaturated group responsible for producing color is called the:
Correct answer: B. Chromophore
- A. Auxochrome
- B. Chromophore
- C. Lake
- D. Chromogen
Explanation
The correct answer is Chromophore. Chromophores are the parts of a dye molecule responsible for color production. They contain conjugated systems of double bonds, often involving unsaturated groups, that absorb certain wavelengths of light, resulting in the appearance of color. The other options do not specifically refer to this function: an auxochrome enhances the color but does not produce it on its own; a lake is a type of pigment, not a molecular group; and a chromogen is a precursor to a chromophore, not an active color-producing group.
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About Industrial Chemistry
Industrial chemistry applies chemical reactions and material properties to the manufacture of adhesives, dyes and polymers. Coverage includes addition and condensation polymerisation, thermoplastics and thermosetting polymers, the structural basis of colour in dyes, and how adhesive composition enables bonding between surfaces.
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