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Dyes - Color, Structure and Characteristics

Different dye...

Question

Different dyes are used for dyeing different materials. Which of the following statements is false?

A

Nylon can be dyed with acid dyes

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B

Cotton can be directly dyed with malachite green

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C

Terylene is mainly dyed with disperse dyes

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D

Polyacrylonitrile can be dyed with basic dyes

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Solution

The correct option is C Cotton can be directly dyed with malachite green
The color of the wool cloth dyed directly by dipping in hot solution of malachite green dye is fast. The color of cotton cloth dyed directly (without using mordant) by dipping in hot solution malachite green is not fast to washing and is of low intensity.

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Dyes - Color, Structure and Characteristics

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