MDCAT I Industrial Chemistry I Unit 20 | Lec # 2 I WAK Entry Test

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Industrial Chemistry (Dyes) Lecture #2 | Classification, Structure & Applications

In this lecture, we explore the definition, characteristics, structure, and classification of dyes, along with their applications in textiles, food, and industry.

🔹 Topics Covered in this Lecture
Definition and characteristics of a good dye
Chromophore–Auxochrome Theory by Otto Witt
Why nitromethane is colourless while nitrobenzene is yellow
Role of auxochromes in deepening colour intensity

Classification of Dyes:
Based on Origin → Natural & Synthetic
Based on Structure → Nitro, Azo, Triarylmethane, Anthraquinone, Indigo
Based on Application → Direct, Vat, Mordant, Azoic, Disperse
Uses of Dyes in textiles, food, medicine, and inks

🔹 Why Watch This Lecture?
This lecture is specially designed for Industrial Chemistry, MSc & BSc students, competitive exam aspirants, and anyone curious about dye chemistry and applications in everyday life.

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