Question

How do you dye thread red in colour?

• A. By adding iron filings to vinegar.
• B. By soaking thread in Alizarin paste and allowing it to dry.
• C. By adding iron filings to the Alizarin paste.
• D. By soaking thread in Tumeric paste.

Answer 1

The correct option is B By soaking thread in Alizarin paste and allowing it to dry.

Yarn is dyed red by the following steps.

• Soak the yarn in a mixture of castor oil and alkaline Earth.
• Allow it to dry.
• Soak and dip in Alizarin paste. Boil it till it becomes red.
• Let it dry.