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Questions and Answers
What is the biggest advantage of azo dyes?
What is the biggest advantage of azo dyes?
- Fastness properties
- Energy efficiency
- High intensity colors
- Cost-effectiveness (correct)
What is required for the general formula for making an azo dye?
What is required for the general formula for making an azo dye?
- A coupling component and a diazo component (correct)
- Two inorganic compounds
- Only one organic compound
- Three organic compounds
How can the change from trans to cis isomerism in azo dyes be effected?
How can the change from trans to cis isomerism in azo dyes be effected?
- By heating at high temperatures
- By increasing the pressure
- By exposure to UV radiation (correct)
- By adding a third organic compound
How are all reactions carried out during the production of azo dyes?
How are all reactions carried out during the production of azo dyes?
What is a key factor in the cost of chemicals related to the manufacturing of azo dyes?
What is a key factor in the cost of chemicals related to the manufacturing of azo dyes?
What does the elimination of photochromism in some dyes help achieve?
What does the elimination of photochromism in some dyes help achieve?
Azo dyes are known for their low intensity colors compared to other dye classes.
Azo dyes are known for their low intensity colors compared to other dye classes.
The cost-effectiveness of azo dyes is not influenced by the manufacturing processes involved.
The cost-effectiveness of azo dyes is not influenced by the manufacturing processes involved.
A coupling component and a diazo component are required to make an azo dye.
A coupling component and a diazo component are required to make an azo dye.
Isomerism in azo dyes cannot be affected by exposure to UV radiation.
Isomerism in azo dyes cannot be affected by exposure to UV radiation.
The elimination of photochromism in some dyes has not been a focus of development efforts.
The elimination of photochromism in some dyes has not been a focus of development efforts.
Photochromism leads to an irreversible color change in azo dyes exposed to UV radiation.
Photochromism leads to an irreversible color change in azo dyes exposed to UV radiation.
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